mass air sensor help
Thread Starter
Cruising
Joined: Jun 2008
Posts: 11
Likes: 0
From: Chicago IL
mass air sensor help
I bought a 86 vette. I put new mass air flow sensor and the 2 relays. Is it supoose to make a hissing sound over 2000 rpm? I think i might of mixed up the relays because after 25 min of driving it doesnt make the hissing sound, now I get code 34. Do I need new relays? Did I mess anything up?
Team Owner
Joined: Jan 2003
Posts: 20,297
Likes: 240
From: Summerland B.C. Canada
Where is the hissing sound comming from ??
Follow the flow chart to diagnose your 34. http://members.shaw.ca/corvette86/Code%2034.pdf
Follow the flow chart to diagnose your 34. http://members.shaw.ca/corvette86/Code%2034.pdf
Thread Starter
Cruising
Joined: Jun 2008
Posts: 11
Likes: 0
From: Chicago IL
ok, i think i really missed up now. I changed the relays and smoke started to come out from under the battery. I burned a wire. So I guess the relays were good in the first place I put them. Now the car cant start.
Team Owner
Joined: Jan 2003
Posts: 20,297
Likes: 240
From: Summerland B.C. Canada
Not sure why without seeing the electrical schematics for 87-89.
Hopefully someone will chime in, that was swapped both, without a problem.
Le Mans Master
Joined: Dec 2004
Posts: 5,789
Likes: 8
From: Myrtle Beach SC
St. Jude Donor '05-'06
I was under the impression that both relays are the same for 86-89. After looking through my parts manual, I see that the 86 used 2 different relays.
Not sure why without seeing the electrical schematics for 87-89.
Hopefully someone will chime in, that was swapped both, without a problem.
Not sure why without seeing the electrical schematics for 87-89.
Hopefully someone will chime in, that was swapped both, without a problem.
Thread Starter
Cruising
Joined: Jun 2008
Posts: 11
Likes: 0
From: Chicago IL
I swapped both of the relays and I have fixed the problem. Now I need to change the oil pressure sender because it reads 0 psi. Does anyone know where the oil pressure sender is located? Pictures would help. thanks for all your help.
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The oil sender is located behind/under the distributor cap, attached to the back of the intake manifold.
You must remove either the dist. or the wiper motor to get something on it. Right beside it is the oil pressure switch, which has no affect on the dash reading. The Sender is a small cylinder with a prong on one end, and looks like a fuel filter.
You must remove either the dist. or the wiper motor to get something on it. Right beside it is the oil pressure switch, which has no affect on the dash reading. The Sender is a small cylinder with a prong on one end, and looks like a fuel filter.