FIXED: MAF code 33 and 34

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Apr 19, 2019 | 10:50 AM

Contractor

Thread Starter

Junior Member

Joined: Feb 2017

Posts: 27

Likes: 0

From: Fort Collins, Colorado

Car: 1988 Firebird Formula

Engine: 350 TPI

Transmission: 700R4

FIXED: MAF code 33 and 34

Just wanted to follow up with on the issue I had posted about earlier with it 88 formula 350
thowing 33 and 34 and going into limp mode. After if course throwing parts at it. Relays and maf sensor, I came across the trouble tree posted by Tuned Performance and followed it which led me to the ecm. Replaced and all is well. Pay attention to this guy. ! He knows what he’s talking about. Hopefully is will
help someone in the future

Apr 19, 2019 | 12:37 PM

mikeceli

Supreme Member

iTrader: (2)

Joined: Jan 2005

Posts: 1,402

Likes: 200

From: S. UTAH

Car: 1989 IROC-Z 305 LB9 AT Convertible

Engine: LB9 305

Transmission: AT

Re: FIXED: MAF code 33 and 34

Always nice when the OP takes the time, to post the end result!

This and other car forum threads, often with days or contributions, end with toe OP NOT posting the outcome. Depriving all who read it with a possible learning experience.

Even if it's "I gave up and traded the car in on a Toyota" post the results. Thank you.

Apr 19, 2019 | 06:52 PM

Tuned Performance

Sponsor

iTrader: (95)

Joined: Dec 2004

Posts: 16,895

Likes: 1,014

From: Mile High Country !!!

Car: 1967 Camaro, 91 z28

Engine: Lb9

Transmission: M20

Axle/Gears: J65 pbr on stock posi 10bolt

Re: FIXED: MAF code 33 and 34

Glad you stuck to it and found the issue.

Apr 23, 2019 | 07:34 AM

KyleF

Senior Member

Joined: Nov 2004

Posts: 768

Likes: 32

From: Lansing, MI

Car: 1988 IROC-Z

Engine: 5.7 TPI

Transmission: 700R4

Axle/Gears: 3.45

Re: FIXED: MAF code 33 and 34

Quote:

Originally Posted by Contractor

Yup, I see it time and time again. MAF Code... replace relays, replace MAF.... rarely does anyone do troubleshooting before they have spent that money.

Hopefully others will see this post and do some testing before spending the money on a MAF. I kind of understand with the relays since they are so cheap, but still like to see some trouble shooting first.