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02-11-2008
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#1 |
 
Join Date: Jan 2006
Location: Niceville
Posts: 998
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Ease Diagnosis
95 ZR-1:
Would someone please explain the Quad-driver fault? It lists as on/off. Service manual does not go into detail other than to say quad-driver is on the ECM (for my 95 manual at least) and controls injectors. What do they do? What is fault "on"? Is it bad that they show fault "on" after running? How do you address it if it is a problem? What sets fault "on"/"off"? More to come, Ted |
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02-11-2008
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#2 | |
 Join Date: Jan 2004
Location: Alex VA
Posts: 1,087
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Re: Ease Diagnosis
Quote:
change the ecm with a known good one. car runs really bad??? a fault just could be history of them firing bad which could be the injector wiring too I would guess.
__________________
95 390 LPE ZR1 (505 rwhp) LSV = Lingenfelter Super Vette Twin Turbo 2003 Z06 (800 RWHP) |
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02-11-2008
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#3 |
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Guest
Posts: n/a
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Re: Ease Diagnosis
Ted, the quad drivers are what control the secondary injectors. in 90-92 they were a seperate module on the wiring harness. On the later cars, it was incorporated into the ecm.
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02-11-2008
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#4 |
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Join Date: Jan 2006
Location: Niceville
Posts: 998
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Re: Ease Diagnosis
Ron and Jeff, thanks. You've confirmed what I thought. Two cars--both set Module 1 and 3 fault 'on'. What is the impact and does/can it clear itself? Both computers bad? Any checks you have for a bad quad driver on the ECM board? Is it normal? What is module 5? Ted
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02-11-2008
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#5 |
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Guest
Posts: n/a
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Re: Ease Diagnosis
Ted, let me run a scan on a 94 car tonight and look at the info and see what's up.
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02-11-2008
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#6 |
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Join Date: Jan 2006
Location: Niceville
Posts: 998
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Re: Ease Diagnosis
Thanks Jeff!
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