4X4 ENGINE SURGES RPM GAGE JUMPS AROUND ...

2000 GMC Jimmy

Tiny

Harley74

December, 26, 2012 AT 1:09 PM

4X4 - Engine surges - RPM gage jumps around starting at about 55 mph No codes or check engine lights. What should I check first - I have been told to change transmission fluid and the cylinode. Need your help

FOUND 17085 RELATED QUESTIONS

4 Answers

Tiny

ASEMaster6371

December, 26, 2012 AT 1:11 PM

How does the motor run?

Forget about the trans, lets see what the actual issue is

Roy

Tiny

Harley74

December, 26, 2012 AT 1:21 PM

Surges at 55 mph - engine runs ok - no codes - no check engine light started after sitting for about a month

Tiny

ASEMaster6371

December, 26, 2012 AT 1:28 PM

I would think an issue with the tach itself if the motor is running ok.

Check connections at the coil and the back of the cluster

Roy

Tiny

Harley74

December, 27, 2012 AT 11:13 PM

2000 GMC Jimmy starts and runs OK, except when you might say it surges and lacks power a little. The tack jumps around when this happens.

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