85 IROC MAF ISSUE
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Junior Member
Joined: Dec 2017
Posts: 2
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From: Chesterfield VA
Car: 2000 Yukon XL
Engine: 5.4
Transmission: Auto
85 IROC MAF ISSUE
Hello, Working on a 85 Iroc starts and runs (poorly) checking MAF sensor. Went to firewall to check relay and burn off and they are not present. Also unable to find the wiring to reestablish them on the firewall. Any know where the wires originate? Pictures. Thanks has me stumped dont know why they are not present the brackets are their but they and the associated wiring are not.
Joined: Mar 2017
Posts: 4,255
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From: Portland, OR
Car: 86 Imponte Ruiner 450GT, 91 Formula
Engine: 350 Vortec, FIRST TPI, 325 RWHP
Transmission: 700R4 3000 stall.
Axle/Gears: 9 Bolt Torsen 3.70
Re: 85 IROC MAF ISSUE
The relays are not strictly required as long as the MAF has switched power when running. The burn off relay only serves to clean the element when activated.
Have you pulled codes, and done any data logging? The ECM will tell you if there are serious circuit malfunctions.
GD
Have you pulled codes, and done any data logging? The ECM will tell you if there are serious circuit malfunctions.
GD
Thread Starter
Junior Member
Joined: Dec 2017
Posts: 2
Likes: 0
From: Chesterfield VA
Car: 2000 Yukon XL
Engine: 5.4
Transmission: Auto
Re: 85 IROC MAF ISSUE
Ok guys thanks for the help. I will pull codes the check engine light is on. I thought they all had the relay/burn off. Thanks again for the advice
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