mass air flow
Pro
Joined: Dec 2018
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From: Wisconsin
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Is the check engine light coming on? You can pull error codes on an 85 with a paper clip.
Thread Starter
Cruising
Joined: Jun 2021
Posts: 10
Likes: 0
From: lancaster ca
no check engine light. it was running fine i changed the shocks and then drove aroud for about 20 mins parked it in the garage and the following day it started acting up. im thinking maybe a vacuum leak, what do you think?
Team Owner
Joined: Jul 2004
Posts: 28,474
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From: Hartford WI
Did you try to do it with the MAF disconnected?
Team Owner
Joined: Jul 2004
Posts: 28,474
Likes: 3,291
From: Hartford WI
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Team Owner
Joined: Jul 2004
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From: Hartford WI
Thread Starter
Cruising
Joined: Jun 2021
Posts: 10
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From: lancaster ca
thank you, when i disconnected the MAF it ran must better just waiting on the part now... I have another question can you tell me if the 1985 has and MAF power and burn off relay and if so where is it located?? again thank you
Racer
Joined: Jun 2001
Posts: 377
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From: Chicago IL
85 has a "burn off module" located on passenger side behind "bread box" on dash. After 85, they went to a simple relay located on firewall. As I understand it, if your module is bad (and I am not sure how you isolate a bad module).. .you'll be going to ebay, etc. looking for a decent used part.
Drifting
Joined: Apr 2020
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From: Orange, CA
Racer
Joined: Feb 2020
Posts: 483
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From: Fairfax, Virginia
85 has a "burn off module" located on passenger side behind "bread box" on dash. After 85, they went to a simple relay located on firewall. As I understand it, if your module is bad (and I am not sure how you isolate a bad module).. .you'll be going to ebay, etc. looking for a decent used part.
Thread Starter
Cruising
Joined: Jun 2021
Posts: 10
Likes: 0
From: lancaster ca
Ok iv replaced the mass air and the mass air burn off module behind the bread box and with everything together its running just like it was when this happed... There is no check engine light. Is there anyone who may know what is up with this?
Last edited by edwardautry; Jun 21, 2021 at 12:40 AM.
Thread Starter
Cruising
Joined: Jun 2021
Posts: 10
Likes: 0
From: lancaster ca
OK I have an error code 43 I replaced the knock sensor and it still is running poorly and still have 43 code. If the Coolant Temp sensor was bad would that give me a code 43???
with everything else that has been replaced and tested I think if the Coolant Temp sensor doesn't correct the problem it would be the ecm??
with everything else that has been replaced and tested I think if the Coolant Temp sensor doesn't correct the problem it would be the ecm??
Pro
Joined: Aug 2020
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From: Liliha Bakery stuffing my face with coco puffs!
Code 43 will pull alot of timing off idle and will make the engine feel sluggish. You might want to run through this logic tree before changing more parts.
https://www.corvetteforum.com/forums...post1600002941
https://www.corvetteforum.com/forums...post1600002941