need some help
Thread Starter
Safety Car
Joined: Jul 2007
Posts: 4,456
Likes: 29
From: Wichita Falls Texas
need some help
well on my way home tonight my service engine soon light came on anybody know what could be up. im suppose to be going on a little trip tomrrow so help would be appreciated.
96 vert a4 105k miles
96 vert a4 105k miles
Race Director
Joined: Oct 2005
Posts: 11,768
Likes: 175
From: Rolla Missouri
2021 C4 of the Year - Unmodified Finalist
St. Jude Donor '10 thru '25
The light came on because one of the sensors detected an out of range condition. I believe AutoZone will read the codes for you for free.
Drifting
Joined: Sep 2003
Posts: 1,363
Likes: 7
From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
corvette8189,
yes there is. and it's easy. do you have a factory service manual (FSM)?
If so, look for the Central Control Module section (in our 94 FSM it's section 8D). The first section or two discusses the 'diagnostic mode' and how to engage it (on our 94, it indicates grounding pin #12 of the ALDC connector (under the driver side dash).
HOWEVER, since yours is a 96 and has both the OBDII connector and is OBDII compliant, I am resonably sure it will be different pin grounding on yours...
If you don't have a FSM, check the tech section, or do a search to find how to do it.
yes there is. and it's easy. do you have a factory service manual (FSM)?
If so, look for the Central Control Module section (in our 94 FSM it's section 8D). The first section or two discusses the 'diagnostic mode' and how to engage it (on our 94, it indicates grounding pin #12 of the ALDC connector (under the driver side dash).
HOWEVER, since yours is a 96 and has both the OBDII connector and is OBDII compliant, I am resonably sure it will be different pin grounding on yours...
If you don't have a FSM, check the tech section, or do a search to find how to do it.
Drifting
Joined: Sep 2003
Posts: 1,363
Likes: 7
From: 1994 LT1 Coupe 6-speed with FX3 & 2000 LS1 Vert 6-Speed with F45 Hunterdon County, NJ
been looking for how to pull codes for 96, and didn't find yet (in case you don't have a FSM).
Anyway, in case you find how to pull the codes, here is a link to the codes: http://www.corvetteactioncenter.com/...+Trouble+Codes
Anyway, in case you find how to pull the codes, here is a link to the codes: http://www.corvetteactioncenter.com/...+Trouble+Codes
Thread Starter
Safety Car
Joined: Jul 2007
Posts: 4,456
Likes: 29
From: Wichita Falls Texas
alright got it tested and it said random/multi missfire
the guy said i probally need a tune up
i just bought the car a couple of months ago so who knows how long its been.
any other suggestions
the guy said i probally need a tune up
i just bought the car a couple of months ago so who knows how long its been.
any other suggestions
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Le Mans Master
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From: Ft. Lauderdale Fl
Race Director
Joined: Sep 2000
Posts: 17,298
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From: The Top of Utah
Originally Posted by corvette8189
alright got it tested and it said random/multi missfire
any other suggestions
any other suggestions
RACE ON!!!
Burning Brakes
Joined: Oct 2001
Posts: 911
Likes: 5
From: TN
Obdii
Just a guess on your check engine light. How about just a little bit of water/condensation that was in the gas tank. This activated the check engine light in my 96 LT4, not driven enough for sure. Anyway went to Auto Zone and the code was for the front drivers side oxygen sensor. I kept driving the car to see if it would develop another stumble. Was really surprised when driving down the road the check engine light just went out on its own. Like I mentioned, don't drive the car enough, so to really check it out I removed the gas cap filler neck/fuel pump so I could do a visual inspection inside the tank. No moisture. This happened last year, still not driving it much, did put about 800 miles on it last month on a trip, no problems. To my knowledge without a scanner, you are not going to get any codes like earlier Corvettes out of a 96 Corvette OBDII. My 96 LT4 was bought new and has not had a tune-up yet with about 38K on it now. Only thing that has been changed is the coolant.
Last edited by 70ZZ3 96LT4; Oct 6, 2007 at 12:20 AM.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
For the sake of review, the old school jump the pins doesn't quite work well on the ODBII equipped 96's... the codes are just too damned long to work with. You can't read them on the speedo, and at 3 and 4 digits, reading them by flash is a pain in the ***.
with that said, the random misfire can mean any number of things. do you know the specific code? P-what?
Now... if at 105k miles, it is still running (by some miracle) with the OEM plugs, I would swap them out. The stock Delco Platnum Plugs are JUNK. Utter and complete JUNK. They have these little platnum pucks on the ground strap... it falls off... or burns off, who knows... either way, it's gone, and the gap grows from .050 to .065. That can easily cause a misfire. And ODBII is so much more sensative about it.
with that said, the random misfire can mean any number of things. do you know the specific code? P-what?
Now... if at 105k miles, it is still running (by some miracle) with the OEM plugs, I would swap them out. The stock Delco Platnum Plugs are JUNK. Utter and complete JUNK. They have these little platnum pucks on the ground strap... it falls off... or burns off, who knows... either way, it's gone, and the gap grows from .050 to .065. That can easily cause a misfire. And ODBII is so much more sensative about it.
