Why does my 300E have a high idle?
I had various idle problems on my 300E, I am pretty sure it was due the very degraded wire harness on top of the engine, but I traded it before digging into it any further (rest of the car was not that great either). My 420SEL had a high idle and it was due to a ton of vacuum leaks.
Why does my 420SEL have a high idle?
My 420SEL had a high idle and it was due to a ton of vacuum leaks. Replaced ALL rubber parts on the entire engine (huge job), and problem solved. Idles 800 in park and 600 in drive/reverse. IAV valve when conector is removed it should bring the reves up to 1500 1900 if all is well with it.
Can a carbed engine increase the idle speed?
The answer on that is, no. On a carbed engine the idle speed is increased using an eccentric cam on the linkage. This is both to warm up the engine quicker and to draw more air to compensate for the enriched mixture. Kind of a “robbing Peter to pay Paul” method.
Why is my MB running at high idle?
MB was running horribly due to a split in the rubber boot under the fuel distributor. While the old one was off replaced both the hoses that go to the Idle Air valve. Even with the FD off, the hose going to the block is no fun. It was brick hard so replacing was mandatory.
I had various idle problems on my 300E, I am pretty sure it was due the very degraded wire harness on top of the engine, but I traded it before digging into it any further (rest of the car was not that great either). My 420SEL had a high idle and it was due to a ton of vacuum leaks.
How does the idle control valve on a Mercedes work?
Please try again later. The idle control valve adjusts the engine rev’s for a cold start and on later models adjusts the idle when the engine is warmed up. The oxygen sensor relays to the ECU for your correct fuel mixture, this is just removal and cleaning as part of vehicle maintenance. Loading…
My 420SEL had a high idle and it was due to a ton of vacuum leaks. Replaced ALL rubber parts on the entire engine (huge job), and problem solved. Idles 800 in park and 600 in drive/reverse. IAV valve when conector is removed it should bring the reves up to 1500 1900 if all is well with it.
MB was running horribly due to a split in the rubber boot under the fuel distributor. While the old one was off replaced both the hoses that go to the Idle Air valve. Even with the FD off, the hose going to the block is no fun. It was brick hard so replacing was mandatory.
Why does my car idle all the time?
If the computerized engine control system is faulty, high idling can be one symptom. A vacuum leak in any of the hoses can be the culprit—inspect them all for leaks. A bad idle-speed control unit can cause the problem; it may need to be replaced.
Can a bad alternator cause a bad idle speed?
A vacuum leak in any of the hoses can be the culprit—inspect them all for leaks. A bad idle-speed control unit can cause the problem; it may need to be replaced. A faulty alternator can fast idle issues; if so, replace it. For the do-it-yourself mechanic, Many high-idle problems can be identified and remedied with some patient troubleshooting.
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.
What should I know about BMW E30 idle speed?
This article is intended for you to learn a little something about your car, and at the same time, point you in the right direction towards fixing that erratic idle. Keep in mind that this article is specific to the 1987 through 1991 E30 6 cylinder cars, however the basics apply to nearly all BMW’s.
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:
What to do when your car is at high idle?
Take the computer out of its plastic case. Plug it back in to the connector and let the board just dangle. Start the car and let it run at its high idle. Start monkeying with the controller circuit board. (It won’t hurt you. You probably won’t hurt it, either — these are discrete linear components, pretty heavy-duty.
Please try again later. The idle control valve adjusts the engine rev’s for a cold start and on later models adjusts the idle when the engine is warmed up. The oxygen sensor relays to the ECU for your correct fuel mixture, this is just removal and cleaning as part of vehicle maintenance. Loading…
The answer on that is, no. On a carbed engine the idle speed is increased using an eccentric cam on the linkage. This is both to warm up the engine quicker and to draw more air to compensate for the enriched mixture. Kind of a “robbing Peter to pay Paul” method.
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.
Why is the idle speed of my car so high?
Step 2 – The idle air control motor (valve) is responsible for controlling the engine idle speed, if this part fails or becomes weak the engine idle speed could become erratic, additionally, this condition may or may not trigger the MIL (check engine, service engine soon light.)
Step 2 – The idle air control motor (valve) is responsible for controlling the engine idle speed, if this part fails or becomes weak the engine idle speed could become erratic, additionally, this condition may or may not trigger the MIL (check engine, service engine soon light.)
How can I keep my car at idle?
Step 3 – Engine vacuum is a sealed system and must hold a specific amount to maintain proper idle conditions, inspect the engine vacuum hoses and intake gaskets. Step 4 – The air intake boot or tube is used to deliver air to the intake system of the engine.