1998 Dodge Durango Misfire and EGT Code

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JON_W_GRIMALDI
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my check engine light came on while driving, during left hand turn I accelerated while coming out of the turn, the engine raced but i was not accelerating, i let off the gas and tachometer dropped to about 400, heard clicking as if running out of gas and engine was going to shut off, check engine light came on, i let it idle for a few seconds, then it stopped clicking, came back upto about 800rpm and everything seemed fine. ive had a real hard time starting when its been sitting cold. engine cranks but takes about 3 tries and 10-15 seconds to start, just replaced spark plugs. the engine will sometimes stutter at a red light. at steady speeds it runs like a champ. check engine light comes on all the time now. help!
Dec 28, 2006 at 2:19 AM
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SERVICE WRITER
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Can you get some codes pulled out of the ecm? (autozone?). I wouldn't buy part there, but they'll give you a free scan! :)
Dec 28, 2006 at 10:44 AM
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JON_W_GRIMALDI
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p0300
p0303
p0306
p0545
Dec 29, 2006 at 11:22 AM
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SERVICE WRITER
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The first three are misfire codes, the last ( PO545)
is Exhaust Gas Temperature Sensor Circuit Low (Banks1 Sensor1) May be due to a blown resistor in the EGT connector or a bad EGT sensor. I would address the last one first and it may have caused the misfires.






Article of interest?
converter meltdown see link:

http://www.usatoday.com/money/autos/2005-12-21-chrysler-usat_x.htm
Dec 29, 2006 at 12:07 PM

Suggested Repair

Address P0545 first by inspecting the bank 1 sensor 1 exhaust gas temperature sensor connector for a blown resistor and testing or replacing the EGT sensor. Then recheck misfire codes P0300, P0303, and P0306.

Conversation Summary

The owner of a 1998 Dodge Durango reported a check engine light, a momentary high-rev event without acceleration, low idle with clicking, hard cold starts, and stuttering at idle, while steady-speed driving was normal. Retrieved codes were P0300, P0303, P0306, and P0545. The expert identified the first three as misfires and P0545 as an exhaust gas temperature sensor circuit low on bank 1 sensor 1, possibly from a blown connector resistor or bad sensor, and advised addressing that first because it may have caused the misfires.

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