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Discussion Starter #1 (Edited)
Hi can anyone help out with a misfire on a ZX5 .... 2.0 l ...ztec .... automatic, only happens on acceleration around the 60 - 80 kms range most times it's just 3 or 4 quick little misfires then it's fine .... wires and plugs changed less than a year ago. 154000 kms on car. No check engine light, Any ideas ? Oxygen sensor maybe ? Thanks for any info.
 

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Discussion Starter #3
Oh yes it's a automatic and I didn't hook up the scanner because the check engine light is not on. Could there be a code without engine light on ? Thanks...
 

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Could have a "pending" code, won't light the CEL unless the situation repeats for a while.

Usual advice is to look at the coil pack for any signs of cracking, that can let moisture in & the coil deteriorates. Misfires often noticed first at higher loads.
 

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Registered
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Moved to General Tech Chat.

Could have a "pending" code, won't light the CEL unless the situation repeats for a while.

Usual advice is to look at the coil pack for any signs of cracking, that can let moisture in & the coil deteriorates. Misfires often noticed first at higher loads.


This....
 
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