The problem you describe could be 1 million different things. First, I am assuming that this problem rears it ugly head when the engine is up to operating temperature. Your comuter goes through a series of checks as the engine warms up. These tests take 3 to 5 minutes. The computer relies on different sensors to adjust fuel delivery and things like that. Sensors like the ones you describe usually - but not always - sent a trouble code that triggers the check engine light. Is this light on when the problem occurs?
Just changing sensors without testing them will lead you down the wrong path and cost you excessive money. Autozone or a place like that can and will test many sensors free of charge.
The two sensors that can be tested but are just better to replace are the Engine Coolant Temperature Sensor (ECT) and the Intake Air Temperature Sensor (IAT). The test proceedures are very time consuming and are not worth the effort. But they rarely fail so change them as a last step.
Did this problem happen after the tune up? If so, what brand parts did you use for the tune up? Is the check engine light on? If so, what are the trouble codes? Autozone will scan the computer for free and tell you the codes.
Wednesday, November 19th, 2008 AT 11:38 AM