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#1 |
Join Date: May 2006
Posts: 5
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I have been trying to figure this out for a long time. Even when the valet key is turned to full I can't feel the difference between it being off and on -- ie. no power difference either way. I had the EGR valve replaced (twice) by a dealer after they determined that was the culprit but it still does the same things. Usually the "service soon" light will come on. I read that the vacuum pump in the front passenger side below the headlight should come off when I put my finger on the secondary vacuum line after disconnecting it. Should the pump turn on when the vacuum line is connected and I have the ignition turned to "ON" but the engine is not yet on? I don't know if it is a vacuum line issue or something else. I may have the original spark plugs and wires as well so perhaps that is causing an issue. The dealer said it looked good but I am skeptical. The car has 39,000 miles on it.
Any ideas or suggestions on who to call. I live in Hawaii so I don't know of any good places to take it in here. Thank you! |
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#2 |
Join Date: May 2005
Location: Leesburg, VA
Posts: 2,713
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What code(s) is/are set when the SES light comes on? Any time that comes on, getting the code that set it is a good starting point.
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Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img] |
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#3 |
![]() Join Date: Dec 2003
Location: Arcadia,OK
Posts: 3,385
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Aloha!
Sounds like you're going to have to troubleshoot by remote control. The first thing you should do is to pull the DTC's (diagnostic trouble code) & report back with the results. Anytime there is a SES (service engine soon) light displayed, a DTC will be stored and the secondary system disabled resulting in no "full power." The codes will allow us to provide systematic direction related to your problem rather than random procedures. Scroll down to Reading DTC's on 94-95 ZR-1s http://zr1netregistry.com/ZR1_troubleshooting.htm Scroll down to Reading DTC's on 94-95 ZR-1s Once you have done that, I suggest that you disconnect the battery for 1 minute to clear all stored codes, then reconnect. Drive the car in full power mode to see if there is any difference and whether the SES light reappears, then recheck the stored codes. This procedure will focus on the current problem. Generally, the underlying problem is pretty simple to fix once it's properly analyzed. Let's deal with the vacuum issues, if necessary, after the codes have been obtained.
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Jerry Downey JERRYS LT5 GASKETS & PARTS http://www.jerrysgaskets.com 1994 ZR-1, Black/Black, Lingenfelter Aerobody, 416cu in, 3.91 gears, coil-over susp, Brembo brakes, etc. 2016 Black-Red, 3LT-Z51 Auto 8-speed. |
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#4 |
Join Date: May 2006
Posts: 5
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Thank you for the responses. Does anyone know where I can buy a decent scanner to check the codes or is it recommended to take it to a shop for that?
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#5 |
Join Date: May 2005
Location: Leesburg, VA
Posts: 2,713
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Like Jerry mentioned, you can check the codes with a paperclip. See the link he included.
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Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img] |
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#6 |
Join Date: May 2006
Posts: 5
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Thanks for the great advice. I found that I am getting codes 32 and 12. Is there a place on this website that shows the meaning of individual error codes?
Thank you everyone! ![]() |
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#7 |
Guest
Posts: n/a
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12 means you are entering and exiting the code sequence.
Code 32 is the EGR circuit. |
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#8 |
Join Date: Oct 2004
Location: Folsom CA
Posts: 1,648
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For future reference, here's a list of error codes:
http://www.troublecodes.net/GM/94-95_57J.shtml TomC "Crabs"
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TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B] |
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