Engine Vacuum Leak Symptoms and Solutions

15-1

If your vehicle has an engine vacuum leak, the air-fuel ratio in your engine will be higher than 14.7:1, also called a “lean” mixture. This ratio means that there is too much air in your engine, and as a result, the engine will run poorly or not at all. If you suspect that your vehicle has a vacuum leak, read on to learn the most common symptoms, as well as how to fix them.

Common Symptoms of an Engine Vacuum Leak

Engine vacuum leaks are commonly associated with the following symptoms, but keep in mind that this is not an exhaustive list.

Engine Running Problems

An engine with a vacuum leak could potentially run normally, but it may idle faster than usual, idle roughly, misfire, hesitate, or stall. You may find your vehicle doesn’t accelerate as well as it typically does. Major intake leaks might prevent the engine from starting at all.

Fuel Economy and Emissions

The lean air-fuel ratio will burn hotter and increase the generation of oxide emissions, such as nitrogen oxide (NOx) and sulfur oxide (SOx). Even if the check engine light isn’t triggered, the vehicle may still fail emissions testing. Drivers would also note reduced fuel economy as the engine controller attempts to compensate by adding more fuel. The evaporative emissions control system (EVAP) also depends on vacuum to function, so a vacuum leak in an EVAP valve or tubing might set an emissions diagnostic trouble code (DTC).

Check Engine Light

The engine control module (ECM) continuously monitors the environment in the engine. Using the manifold absolute pressure (MAP) sensor or mass air flow (MAF) sensor, among others, the ECM modulates fuel injector pulse, spark timing, and valve timing. If there is a vacuum leak, the ECM may be unable to compensate. Short-term or long-term fuel trim, STFT or LTFT on a scan tool Automotive Repair Software, might show something like +10% or +25% as the ECM attempts to compensate for unmetered air. P0171 and P0174 are common Fuel System Lean DTC.

Engine Damage

At its worst, long-term driving with a vacuum leak, elevated temperatures generated by running a lean air-fuel ratio could result in engine damage. Lean mixtures can detonate, damaging pistons and bearings. Higher than normal exhaust temperatures can also lead to catalytic converter meltdown.

Other Issues

Depending on where the vacuum leak is located, it could cause a variety of other problems. Some fuel pressure regulators are vacuum modulated, and so would jump to high pressure when vacuum is lost. This could result in fuel trim problems and a check engine light, possibly with Fuel System Rich DTCs, such as P0172 or P0175. Some older power steering systems idle-up the engine using a vacuum switching valve (VSV), but a vacuum leak might stall the engine during a parking maneuver. Many vehicles use a vacuum-actuated brake booster, reducing braking effort, but a vacuum leak here might make it harder to stop your car.

Identifying an Engine Vacuum Leak

There are several methods you can use to identify a vacuum leak. Start with a vacuum hose diagram, which you can find in a repair manual or sometimes on a sticker under the hood. Using one of the following methods, finding the vacuum leak might manifest itself as a change in engine speed or idle smoothness. Smaller leaks may only manifest themselves as fluctuating STFT readings on a OBD2 vehicle scanner.

Visual Check

A visual check is a good way to start, particularly with vacuum hoses and tubes. Exposed to extreme under-hood temperatures and oxygen in the atmosphere, rubber vacuum hoses and plastic vacuum tubes can become stiff or brittle, easily cracking or breaking. Similarly, rubber engine intake tubes can also become brittle, cracking and opening a way for unmetered air to get into the system. Physically manipulating these components with the engine running might reveal the leak.

Water Method

This is the simplest and cheapest method, as it utilizes just a simple spray bottle of water. With the engine running, spray water around suspected vacuum leak areas, such as vacuum hose fittings, intake manifold gaskets, and throttle plate bushings. A vacuum leak will suck in water, temporarily “sealing” the leak. This tiny amount of water won’t do any damage to your engine.

Carb Cleaner

Another method is to use a can of carburetor cleaner or intake cleaner spray. Please note that carb cleaner is flammable, so caution must be exercised and a fire extinguisher must be kept close at hand.. Sparingly spray the cleaner to suspect vacuum leak areas, while the engine is idling. If the leak is found, the engine will likely smooth out as the flammable mixture makes up for the lean air-fuel ratio.

Propane

This is a time-tested method for finding vacuum leaks, working on a principle similar to using carb cleaner. Use a small unlit propane torch, such as used for brazing or soldering, and a length of rubber hose. Poke the end of the hose around suspect vacuum leak areas with the engine idling. If the leak is found, the engine will probably speed up or smooth out as the flammable gas “compensates” for the lean AFR. Again, please note that propane is flammable, so caution must be exercised and a fire extinguisher must be kept close at hand.

Mechanic’s Stethoscope

Using a mechanic’s stethoscope with the probe removed and a length of hose, poke around suspected leak areas while the engine is running. Don’t forget to check around the vacuum brake booster, both in the engine bay and behind the brake pedal. Smaller leaks might be difficult to pinpoint, but a trained ear can pick up the distinctive hissing or whistling sound emitted by a vacuum leak.

Bubble Test

If you have access to an air compressor with a good regulator, introduce no more than 2 psi air into the intake with the engine off. (Under 2 psi is critical, as you can damage sensors or valves or create new leaks with higher psi.) Seal off the throttle body and exhaust, then use a soapy-water mixture to spray down the engine. Vacuum leaks may be revealed by the mixture bubbling up at the site of the leak.

Smoke Machine

This is the most expensive and safest method, but usually yields the best results. Not everyone has access to these expensive tools, but it may be necessary if the vacuum leak eludes you. With the engine off, plug the intake and exhaust and start the smoke machine injecting smoke into the intake. The harmless smoke, vaporized mineral oil, might take a couple minutes to fill the system, and will then start looking for ways to get out. A tiny plume of smoke will reveal vacuum leaks, so it’s best to do this test in an area free of drafts or wind.

Once you’ve identified the source of the leak, the obvious solution is to repair it, but it isn’t always a simple fix. Vacuum hoses can be replaced easily, as can sensor or tube O-rings, and some valves are also easy to replace. Other vacuum leaks might be more difficult and time-consuming, such as intake manifold gaskets or a faulty brake booster. As always, if you feel like the job is beyond you, check with your local trusted mechanic for professional assistance. Don’t forget to reset the check engine light when you’re done making repairs.

How to program fobik with wiTECH app

Confirmed! Chrysler wiTech MicroPod 2 clone is able to do online programming to Chrysler including ECU programming and key adding even when all keys are lost. Here you go.

Purpose: Micropod 2 clone programs new key fobik to Chrysler 200 when all keys are lost

Car: 2015 Chrysler 200 (The 2015 Chrysler 200, along with other Fiat-based models like the Jeep Renegade, Jeep Cherokee, and Ram Promaster, are all equipped with a rolling PIN Code.)

What you need:
Locksmith Identification Number (LSID through NASTF)
Proper keys to be programmed
PIN Code
Laptop
MicroPOD II good quality clone or the genuine
wiTECH diagnostic application

Before you begin the programming process, you should the Key Code (key cut code) and Authorized PIN (key programming).

VERY VERY VERY IMPORTANT:

*   You must be online to program the key with OBD2 Scanner Micropod 2 clone.
*   You can pull the PIN Code with OBDSTAR F104 key tool.
*   If you input the wrong code for 3 times, it locks the BCM and you cannot service the vehicle for 24 hours.
*   The key is one-time programmable. Once married to the vehicle it is locked to the car forever. The key can be erased from the car and put back into the same car, but can’t be switched to another car.
*   The placement of the key during initialization is important. It needs to be placed either behind the shifter or in the center console.

How to program fobik with wiTECH app:

Step 1:

Plug the microPOD II adapter into the OBD port and connect the USB cable from the device to your laptop. This wakes the BUS on the car.

Step 2:

4-1

Manually enter the VIN of the vehicle. This gives you access to the module list.  Select the RFH (Radio Frequency Hub) module. This is the module where the key is registered.

Step 3:

4-2

Next select “Miscellaneous Functions,” then “Program Ignition Fobiks.”  At this point, you are prompted to enter the VIN again, followed by the four-digit PIN Code.

Step 4:

4-3

After the four-digit pin is entered you are prompted to hit continue to “Program Ignition FOBIK.” Once you hit continue you must press the UNLOCK button on the FOBIK within 30 seconds (the FOBIK needs to be located near the center console during this procedure).

Step 5:

4-4

Programming of the Ignition FOBIK is now successful. The new key key is accepted into the car, and the ignition will now turn on and start the car. At this point, you also have the option to program a second key with wiTech application.

VXDIAG MB SD Connect C6 MB Star C6 Benz Diagnostic Tool

VXDIAG MB SD Connect C6 MB Star C6 Benz Diagnostic Tool with DOIP&AUDIO Function Better than MB STAR C4/C5

Original VXDIAG For XENTRY Diagnosis VCI VXDIAG For XENTRY Diagnosis DoIP Pass Through Interface

VXDIAG For XENTRY Diagnosis VCI is the latest interface for For Mercedes & SMART vehicles can replace Star C4/C5. VXDIAG For XENTRY Diagnosis VCI acts as a Pass-through Interface, also called Star C6, For Benz C6 multiplexer to provide complete communication between a vehicle and the VXDIAG For XENTRY software loaded on a PC.

XENTRY Software Show:

 

VXDIAG MB SD Connect C6 XENTRY Diagnosis VCI Overview:

Compatible Software: XENTRY/Das Software

Support Vehicle: Mercede For Benz & Smart vehicles

DoIP: Support DoIP

Functions: Star Diagnostic & programming (SCN Coding)

VXDIAG MB SD Connect C6 XENTRY Diagnosis VCI Features:

1.VXDIAG For XENTRY Diagnosis VCI can be used for all model series of For Mercedes For Benz vehicles

2.VXDIAG For XENTRY Diagnosis VCI support DoIP, cover more functions during SCN Coding than SD C4/C5

3.VXDIAG For XENTRY Diagnosis VCI functions including diagnosing, programming, simulation studying, repair information, automotive maintenance, technical service bulletin and so on

4.VXDIAG For XENTRY Diagnosis VCI Diagnosis updates no longer necessary – firmware updates required on rare occasions

5.VXDIAG For XENTRY Diagnosis VCI does not need a power supply unit for external power supply

6.VXDIAG For XENTRY Diagnosis VCI Handy multiplexer with a small, sturdy construction (no PC core, battery, fan, or display)

7.Engines (All Gasoline & Diesel Systems)

8.Transmissions and Electronic Selector Modules

9.Airmatic and Active Body Control Suspension Systems

10.Traction Systems: ESP / ASR / ETS / ABS / BAS / SBC braking systems

11.Supplementary Restraint Systems (SRS) / Airbag, All body modules OCP / UCP / LCP / SCM / SKF / KFB / RCM / DCM’s

12.Drive Authorisation System

13.Sam (Signal Acquisition) Modules

14.Electronic Ignition System (EIS)

15.Pneumatic System Equipment and ATA functions

16.Air Conditioning / climate control Systems

17.Instrument Cluster

18.Tyre Pressure Control

19.Parktronic System

20.Keyless Go

21.D2b Command & Audio Gateway (D2B and MOST networks)

22.TV Tuner

23.Headlamp Range Adjustment

24.Seat Electronics

25.Rvc, RST & Vario Roof modules

26.Automatic Clutch System ACS

27.M-Class Body Modules (AAM / EAM / DAS / SEM / VG Transfer Case)

28.Assyst & ASSYST + systems

 

XENTRY Diagnosis VCI Summary:

The new VXDIAG For XENTRY Diagnosis VCI (Vehicle Communication Interface) multiplexer serves as the interface to the vehicle when performing diagnosis and repairs, and programming electric and electronic on-board vehicle systems.

The VXDIAG For XENTRY Diagnosis VCI does not have its own PC core, battery, fan, or display. It is operated using the VXDIAG For XENTRY Diagnosis Pad via WLAN or a USB cable connection.

 

 

 

 

Notice:

1.If you choose it without laptop,please install the 500GB HDD on laptop above 4GB Memory and I5 CPU, and use it on one laptop only. If change laptop, software may get broken and need to ship HDD back to us to copy software again.

2.You also can watch more videos to get more technical support from official website:

http://www.vxdiag.net

3.This VXDIAG can/’t support All Key Lost,needs one key at least.

Specification:

Item State

RAM 32bit180MHz ARM

FLASH 1MByte FALSH

Diagnostic Port 24PIN, self-determination design

LED 4 LED indicator light,indicate power and status.

Power DC 9V-36V

Consumption 3W

Working Temperature -20°C~70 °C

Storage Temperature -40°C~85 °C

Warranty: One Year

 

Package list:

 

Package 1:

1pc x VXDIAG VCX-PLUS

1pc x OBDII Cable

1pc x USB Cable

1pc x 500GBhdd

 

 

Package 2:

1pc x VXDIAG VCX-PLUS

1pc x OBDII Cable

1pc x USB Cable

1pc x second hand Lenovo T410 laptop (4GB Memory I5 CPU and 500GB HDD)

 

 

Package 3:

1pc x VXDIAG VCX-PLUS

1pc x OBDII Cable

1pc x USB Cable

1pc x new EVG7 Tablet laptop(4GB Memory and 500GB HDD)

 

VXDiag MB SD Connect C6 support add more original software in feature, you only need buy authorization from us. Already released original software authorization has:

GM,Ford,Mazda,Toyota,Honda,LandRover,Jaguar,Subaru,Volvo,VW,and Porsche.

 

 

If you need above softwares,please contact us sales@obd2tool.com.

How to convert HALOGEN to LCI HEADLIGHT with a ICOM cable

It’s a HALOGEN TO LCI HEADLIGHT Tutorial!!!!

Excuse my English I hope this help some of you guys!

In this site you will see the diagram for wiring!

Now after you know what your going to do with the wiring uninstall the frm and install frm2.

You will need NCS expert and Winkfp and inpa! and the icom cable obd to the computer! when you get the cable just read instruction and you ill be fine.. but just in case if your cable didnt bring the instruction here is how to program the cable make sure the computer read the cable if not download the driver after your pc read cable go to start on computer right click properties, device manager,then PORT click on it look for the cable then double click then a window will open lick on port setting (tap) click on advance at the bottom and make sure to set COM to COM1 and the latency to 1 it should be on 16 from default click ok and you are ready to go!

After you install all this software you need to open NCS expert to Change VO and VIN to yor frm2. And then program it!

OK now if you have AHL you need to add this VOs $522 and $524 to CAS and FRM and change production date that is going to be like this for example (#1205) you have to change it to at least #0307. and if you have just xenon add $522 and production date #0307. NOW question is how to do it.

open NCS expert on file tap load profile select expert mode F1,F3 select chassis e89 and select CAS now F2 (ENTER FA) select chassis again then enter vin# of the car

now a new window will open with a list of numbers.. is gonna say attribute ADD and OK at the bottom now we are going to add $522 and $524 and click in top of the first one that is the production date and hit the delete bottom on your keyboard and add the #0307 and click OK then F6 back then choose F4 choose CAS then F2 change job to FA_WRITE and F3 execute job and you are done!

Now you have to pass that information to “NFRM”

1.open NCS expert

2.File-Load profile

3.select EXPERMODE

4.press F1

5.press F3

6.select E89<for E90>

7.select CAS

8.F6 back

9.now you will be able to see your (FG) VIN # at top and (FA) VO

10.press F4<CHOOSE ECU>

11.select NFRM

12.after that select F2 chenge Job

13 choose FA_WRITE

14.F3 executive job wait a little bit and it will say courin beenet or coded ended something like that! now your VO are the same CAS and NFRM

NOW to change VIN

I did it the same way as CAS but instead of choose FA_WRITE i Choose FG_SCHREIBEN

1.open NCS expert

2.File-Load profile

3.select EXPERMODE

4.press F1

5.press F3

6.select E89<for E90>

7.select CAS

8.F6 back

9.now you will be able to see your (FG) VIN # at top and (FA) VO

10.press F4<CHOOSE ECU>

11.select NFRM

12.after that select F2 chenge Job FG_SCHREIBEN then F3 execute Job

now to make sure everything is good Go back to the main menu (or restart ncs-expert) and get the vehicle order from the “NFRM” module. Make sure NFRM returns YOUR VIN and YOUR VO. We want the VIN (FG) and VO (FA) to be the same in both CAS and NFRM. To do this same steps load profile expertmode F1,F3 select chassis and select “NFRM” NOT CAS!!! and it should be your VIN and VO the same as CAS.

Now to program NFRM you have to use Winkfp but first you need to know the part number of the NFRM using inpa that is gonna show on inpa FRM_70. go to inpa folder and look for inpaload select chassis and a window will open and select the first one functional jobs then f2 indet in there you will look for FRM_70 and copy the ZUB that is the part number IT should say for example (9204527) this is a example copy that number down and close inpa. now open Winkfp and choose confort mode F1 enter ZUSB put the number that you wrote down here and ill look for your frm automatically click ok then F4 Enter Vin put your car vin # click ok and then update ZUSB look for the one that gives you in the first step for ex(FRM2) then click on done! if it gives you an error 106 is because you dont have the cable plug in into the car! after that lick on F3 Prog. ZB UPdate and wait until is done and you are done!

Now to make sure BMW Diagnostic Software NFRM is default in NCS expert

load profile then go back to file and click edit file and click on FSW/PSW and uncheck the option “FSW/PSW manipulate with FSW_PSW.MAN” then click ok and choose profile info and on the name put whatever name that will remember you that thats the profile to code to factory any ecu using NCS expert then click ok and ok again that windows will close and click file save as and put the name that you choose.. Then F1, F3 choose chassis then CAS then F4 choose NFRM then F2 SG_codieren then F3 done!

Now to code with NCS expert you will need to create a FSW_PSW TRC file..

here is a video on Youtube but just in case if the video is not working ill write it down

To do this you have to Open NCS expert load profile expertmode

same F1,F3 select chassis select CAS F6 back choose ecu F4 NFRM and change job F2 CODIERDATEN_LESEN then f3 execute job now dont close ncs expert and go to ncs expert folder then to work folder and you will see that there is a FSW_PSW trc file open the file change what ever you need to change and after you change everything save the file.. go to file and click save as and write FSW_PSW.MAN now go back to NCS expert and Click on file edit file and go to FSW_PSW click on it and make sure to check the option FSW_PSW manipulate with FSW_PSW.MAN click ok then choose ECU F4 select the Ecu that you choose to read with CODIERDATEN_LESEN earlier and now change to to SG_codieren and F3 execute job and You are DONE coding!

THANK YOU FOR READING I HOPE THIS WILL HELP SOMEONE I SPENT 2 WEEK TO LEARN ALL THIS AND NOW I WANT TO SHOW IT TO YOU GUYS!

Autel Maxisys Elite Professional Automotive Diagnostic Scanner Review 2018

Are you a professional car mechanic, a trained car technician, or a car enthusiast? Well, here’s Autel Maxisys Elite – an amazing tool for you that can make your day-to-day job much easier and hassle-free.

4-1

For your reference, here’s a brief introduction of an innovative and advanced automotive scanner i.e. Autel Maxisys Elite. Designed by an industry-leading brand, it features to be a fully functional OBD2 vehicle scanner.

This Autel Maxisys Elite offers an extensive range of features and functionalities so that you can easily and quickly fix all car-related problems.

For example, it lets you perform advanced ECU coding. Furthermore, it allows you to smoothly perform all of the workshop operations.

Starting from keeping vehicle records and data files to storing customer information, the device will help you organize all the details.

4-2

In addition to this, it is one of the most reliable tools that are currently available on the market. Not only it confers a slew of advanced features, but also it will be a one-stop solution for all your needs.

FEATURES AND FUNCTIONALITY OF AUTEL MAXISYS ELITE

Compatibility and Vehicle Coverage

This diagnostic scanner code reader offers an extensive vehicle coverage. It is compatible with more than eighty US, European, and Asian makes and models.

Fast and Smart

The device is equipped with the latest 1.8GHz Quad-Core Processor. As a result, it offers you a lightning fast operation speed with a quick diagnosis.

4-3

The best part is — the bootup time of this device is less than 20 seconds. Thus, the product can truly give you a wonderful diagnostic experience.

This smart car diagnostic tool also comes with a bunch of excellent functions. The list of this advanced functions includes One-Click Upgrade, automatically read VIN, and access to Autel Cloud Technology.

Mobility and Ease of Use

This Auto Scanner Tool has an exceptional OE-Level functionality. It works perfectly on most OBD1 and OBD2 protocols.

4-4

Other than that, it comes with an enhanced wireless connectivity feature. This feature lets you connect the device to Android tablets for greater mobility and ultimate ease at work.

Advanced Functionalities

This Autel Scanner will help complete ECU programming on various BMW and Benz vehicle models.

4-5
Additionally, it offers you “Coding function” so that you can perform coding and programming on the complex control modules of a vehicle.

Other notable functionalities of this gadget include anti-theft matching, SAS reset, tire pressure reset, injector programming, DPF reset, and throttle matching etc.

Online Programming

With this powerful tool, you have the provision of performing online ECU programming.

This feature is undoubtedly considered to be one of the most valuable and worthy functions.

Online Programming feature certainly helps professional DIYers and mechanics to troubleshoot and deal with complex vehicle problems.

All you’ll need to carefully follow step-by-step instructions to solve the issues.

4-6

Also, it comes with a visually stunning, sharp, and bright Retina display of 9.7-inches. This diagnostic scanner is bound to work as fast and effective as possible.

MaxiFix Platform

4-7

The platform allows you to collaborate with other professional technicians. Additionally, it gives you access to a comprehensive database diagnostic tips, troubleshooting tricks, repairing procedures, and more.

Automatic Software Update

This Autel Maxisys Elite will receive automatic software updates, along with real-time push message notifications. This process will periodically upgrade your device and make it up-to-date and compliant.

4-8

Plus, you can also receive technical support assistance whenever you need.

For this purpose, you need to make a direct contact with the technical assistance team of Autel.

Ergonomic Design

The model features an ergonomic design. It comes with a rubberized outer protection for maximum longevity. Also, it has a superior rugged internal housing.
By purchasing this device, you will have access to the MaxiFix Platform.

Hardware Configuration

The model is powered by the world’s fastest and most efficient mobile processor i.e. NVIDIA’s Tegra” 4.

4-9

Pros

Ergonomic design with advanced functionalities
Features 9.7-inches bright retina display
Easy to use and easy to handle
Fast, quick, and efficient
A superior vehicle coverage

Cons

It does not offer ECM reprogramming (supports only ECU coding) for GM

4-10