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The mkiv Supra Owners Club

car engine run like a bus


China Man

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My car battery was dead and the last time I drove it was 4 weeks ago. Parked on the road and the Clifford keep beep beep beep until all the juice in the battery is gone.

 

I have taken out the battery and charged it up with a battery conditioning charger. With the battery now connected back into the car it runs like a bus....

 

at idle the vibrations is like 2-3 second waves, hard to explain but it is like spinning a wheel which is uneven. If I rev the engine up after 1k revs the vibration is gone.

 

I tried to reverse gear to move a few meter and OMG the engine is like almost stalling if I don't press on the accelerator.

 

I did a search on here and a few post said that I need to drive it for 20mins to let the ECU learn the fueling and ignitions again, is that true?

 

Benson

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It is probably down to the ECU being reset so it will hunt about a bit more than usual on idle at first, it may also be compounding a dirty idle control valve, but the ECU does not take twenty mins to re learn, it simply just resets the idle control, leave it running for a few mins and turn on the air con and lights.

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