Is there such a thing as high idle Hell?
Mercedes-Benz Tinkering – High Idle Hell I just went through High Idle Hellwith my ’83 380SL. It was idling at 1500, most of the time, and stalled on occasion. Here are some notes. This is a common problem with these cars. Examples: exampleexampleexample. (You may notice a common thread here: The computer.) Components
What’s the difference between high idle and low idle?
Step by step automotive repair guide on how to troubleshoot and fix an engine that is idling high (fast) or low (slow). (Note: The engine idle speed is controlled by the computer and is NOT adjustable.)
What should the idle Hell be on a Mercedes Benz?
In any case, it should NEVER be as high as 1500 by itself. The warm-up stuff brings it to 800-1000, something like that. Abnormal Operation Here’s a typical pattern:
Why does my car idle at 1500 all the time?
Quick tests If your idle stays at 1500 all the time, most likely it is the electronic idle speed regulation. (If you want to simulate this in a properly working car, just yank the idle speed controller plug off.) Jiggle the connectors to the slide valve and the controller box.
Mercedes-Benz Tinkering – High Idle Hell I just went through High Idle Hellwith my ’83 380SL. It was idling at 1500, most of the time, and stalled on occasion. Here are some notes. This is a common problem with these cars. Examples: exampleexampleexample. (You may notice a common thread here: The computer.) Components
How to troubleshoot an automotive engine high idle?
The troubleshooting procedure for high and low idle conditions are similar, which are included in the following: Step 1 – If the check engine or service engine light soon has illuminated retrieving the diagnostic trouble codes could lead you in the right direction of what the problem is, or is related too.
Quick tests If your idle stays at 1500 all the time, most likely it is the electronic idle speed regulation. (If you want to simulate this in a properly working car, just yank the idle speed controller plug off.) Jiggle the connectors to the slide valve and the controller box.
What should the idle speed be on a Mercedes Benz?
Normal idle, warmed up, should be right around 500 rpm. It should stay there very solidly.
What are the components of the idle speed regulation?
For ’83, the components to the electronic idle speed regulation are: Idle speed compensator (aka slide valve) Idle speed controller (aka “computer” although it’s really an analog circuit) Overvoltage “relay” 16C temp switch
How can I tell if my idle speed controller is working?
Check that the plug connected to the idle speed controller isn’t switched with that for the heater. Check for vacuum leaks(probably always a good idea). If It’s the Controller (Computer) If everything else seems okay, it’s probably the controller. From my research, this is it in most of the cases. Take the computer out of its plastic case.