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09-07-2020
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#11 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Car running rough and Stalling
Well it runs great in low power mode.... I might need to check my tune.
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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09-07-2020
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#12 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Car running rough and Stalling
Found chip paperwork secondary port controls removed... so this is odd, but narrowing down the problem hopefully
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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09-20-2020
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#13 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Car running rough and Stalling
Well this turned out to be injectors; they were only a few years old but prior to this I had an issue with bad/old fuel ... might have done them in ..... I replaced yesterday and car ran perfect...
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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09-20-2020
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#14 | |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,686
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Re: Car running rough and Stalling
Quote:
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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09-20-2020
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#15 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Car running rough and Stalling
I knew it was some sort of fueling issue;(Mr Haibeck helped me rule out some sort of ECM issue) I tested secondary relays(good), fuel pressure was always good so tried the Fuel Injectors and problem is gone. It was the secondaries only(had a different batch # on it) very odd... they ohmd fine and didnt leak
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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09-20-2020
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#16 | |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,686
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Re: Car running rough and Stalling
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Had a similar issue w injectors recently. 2 bad secondary injectors altho they did ohm ~ 45ohms. Had bad coils as well.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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Linear Mode
