I have a 1987 Toyota Supra with a 2.0L Twin Turbo engine (1g-gte). When Turned on the car will idle extremely rough for about 2 or 3 seconds, then rev upto normal speed (1800 RPM On cold starts). This does not happen when the engine is warm, only on cold starts.
- Battery Is new and Fully Charged, Cranks fast
- Each Cylinder has equal compression of 170 PSI
- Have checked for vacuum leaks, none
- Air Filter is clean
- No ECU Errors
- New Ignition Leads
- Spark Plugs are not fouled
If I have my foot just resting on the gas pedal, it won't hesitate on cold starts for the first 2 or 3 seconds, otherwise it hesitates, but doesn't do it when the car turned on when the engine is warm, only on cold starts.
Car does not give any other problems, so I assume the engine is in good condition, never hesitates or misfires in normal driving, but just on cold starts. Some people would say this is normal, however my other Supra with the same engine did not do it.
So I think it could be something ECU or Electrical related.
Thanks for any Help, If you have any questions or information that I should provide then please ask.
have the same problem?
Saturday, May 2nd, 2009 AT 12:39 PM