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When the engine overheated, it could ahve blown a gasket or danmaged some sensors.
As the CEL is indicating, an error has been detected and the trouble code would be recorded in the engine computer. You would have to retrieve the trouble codes to find out what is wrong.
Here are the procedures for retrieving the trouble codes. Let me know what you find.
ENTERING ON-BOARD DIAGNOSTICS
Although other scan testers are available, manufacturer recommends using DRB (Diagnostic Readout Box) to diagnose the system. Malfunction indicator (CHECK ENGINE) light function can be used, but has limited diagnostic capability.
CHECK ENGINE Light Diagnostic Mode
1. Start engine (if possible). Move transmission shift lever through all positions, ending in Park. Turn A/C switch on and then off (if equipped).
2. Turn engine off. Without starting engine again, turn ignition on, off, on, off and on within 5 seconds. Record 2-digit trouble codes as displayed by flashing malfunction indicator (CHECK ENGINE) light.
3. For example, trouble code 23 is displayed as flash, flash, 4-second pause, flash, flash, flash. After a slightly longer pause, other codes stored are displayed in numerical order.
4. When CHECK ENGINE light begins to flash trouble codes, it cannot be stopped. Start over if count is lost. Code 55 indicates end of trouble code display.
5. Refer to TROUBLE CODES to translate trouble code number to a DRB trouble code message. Once trouble area is identified, refer to TEST TC-1A. Use DRB trouble codes to find appropriate test.
6. As an example, a 3.0L engine starts and runs but has a driveability problem. Malfunction indicator (CHECK ENGINE) light indicates a Code 14. Refer to
TROUBLE CODES to translate trouble code number to a DRB trouble code message.
Sunday, August 22nd, 2010 AT 11:26 AM