Why does my car have a lumpy idle?
Causes of a rough idle. Many different problems could result in a rough idle for your car or truck, including: dirty fuel injectors, clogged air filters, bad spark plugs, and a variety of exhaust system issues.
What should injection valve values be at tickover?
Injection valves at tickover tell you nothing. NOTHING ! The best way is to monitor the values is while driving the car. If your testing in the drive then hold the car at 2000 rpm. Any value over 2 indicates a potential problem. This is like bloody ground hog day !
How can I tell if I have a faulty injector?
The best way is to monitor the values is while driving the car. If your testing in the drive then hold the car at 2000 rpm. Any value over 2 indicates a potential problem. Hub dyno’d at well over 500lbft at the wheels ! and that’s limited. This is like bloody ground hog day ! Injection valves at tickover tell you nothing. NOTHING !
What to do if Mercedes check engine light is on?
1. Turn ignition to position II. All dash lights should be on. Don’t start the car. 2. Locate the OBD-II port under the dashboard. Location of OBD II port used to retrieve Mercedes-Benz fault codes. 3. Plug your OBD II scanner and let it turn on. Use an OBD II scanner to check why the Check Engine Light is ON.
How can I check the injector correction values?
Autolusso suggested that they would check the Injector Correction values prior to doing any work on it so I thought I would have a crack at checking them with multiecuscan and the results are below (he says hoping the photobox links work). You will see that Cylinder 1 is quite different to the others on idle.
What kind of diagnostic scanner does a Mercedes Benz use?
It will scan and erase codes for the Airbag, Powertrain, Chassis, Body, Engine, Transmission and Information & Communication systems. The Carsoft 7.4 Multiplexer is designed specifically for Mercedes-Benz cars. While it can read and reset all the systems in most Mercedes-Benz models it has limited programming functionality.
1. Turn ignition to position II. All dash lights should be on. Don’t start the car. 2. Locate the OBD-II port under the dashboard. Location of OBD II port used to retrieve Mercedes-Benz fault codes. 3. Plug your OBD II scanner and let it turn on. Use an OBD II scanner to check why the Check Engine Light is ON.
What to do if your Mercedes throttle sensor is defective?
Your options are to replace it with a new throttle position sensor. Mercedes-Benz dealerships would be happy to help you or any Indepdement mechanic. Or you can replace the throttle position sensor yourself to save money. If your throttle body is defective, you may not be able to repair it yourself.
Is there a problem with the Mercedes possition sensor?
Mercedes-Benz throttle body or throttle position sensor found on C-Class, E-Class, S-Class, CLK-Class, SLK-Class may fail causing idle issues, no idle or poor acceleration. Symptoms of defective Mercedes throttle body or throttle position sensor include: A common problem that you may notice is that the car drives fine under normal acceleration.