Engine Performance problem
1995 Lexus ES 300 6 cyl Front Wheel Drive Automatic 142000 miles
IAC or MAF? That is the question :-) The check engine light was on (IAC malfunction), until complete intake cleanup. Now IAC is fine. But somehow the problem with RPM still occurs. TPS, engine temp sensor and oil sensor was measured, resistances were OK. When the engine is warming up, rpm decreases till cca 700, when warmed-up and I can stop and start engine again with normal rpm. Until next morning. Cold start at 1800rpm (does not matter if outside temperature is -20Celsia or +20Celsia). After cca 30 seconds drop to 1500 and slowly decreasing. This is first issue that happened to our Lexus althought it is 14 yrs old. Thank you carpros. Sedlakmatej@masab. Sk
have the same problem?
Thursday, April 16th, 2009 AT 9:55 AM