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Old 05-18-2021   #3
jrd1990zr1
 
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Join Date: Dec 2005
Location: Delanson, NY
Posts: 925
Default Re: 1990 MY Hesitation/ stumble of engine

Quote:
Originally Posted by wfot View Post
I would check over some simple stuff. check/test the TPS, it might be worn out or in need of adjustment...

Are the plug wires fully seated on each plug?

Are the wires routed exactly like the factory manual Shows?

ZR1 specialist has a detailed way it resistance test the injectors in the car - but the problem is gets worse when the engine is hot.
Thanks for the advice. Wires are properly seated and routed, I have already checked that.

Are you aware of a way to check the TPS or adjust it? I had not thought of that.
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1986 coupe Medium Blue NCRS Top Flight (sold),
1990 ZR1 #2529 Red NCRS Regional and National Top Flight (sold),
1990 ZR1 #2124 Charcoal Metallic NCRS Top Flight 2010 & 2018,
2003 Anniversary Red Convertible (sold)
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