1987 Corvette code 44
Thread Starter
Intermediate
Joined: Oct 2023
Posts: 33
Likes: 0
1987 Corvette code 44
Hi, I bought a Corvette two weeks ago i've been working on it lately I almost got it working perfectly. Unfortunately, I'm getting a code 44 problem. this problem seems to occur intermittently it'll cause my car to lurch forward in first gear and I have to hold on to the brakes to keep it from bumping into anyone. Also, I smell gasoline around my car when it's running. My car also failed smog which is a high HC under 15mphs but everything else on smog passed. I appreciate any help in diagnosing this car.
list of things I've changed (All OEM)
list of things I've changed (All OEM)
- MAF sensor
- FPR
- O2 sensor
- MAF power relay
- Knock sensor
Thread Starter
Intermediate
Joined: Oct 2023
Posts: 33
Likes: 0
Drifting
Joined: Jul 2022
Posts: 1,805
Likes: 365
From: Central Florida
The smell of fuel is sometimes caused by a bad fuel pressure regulator, take the vacuum line off of it and smell it, is there fuel in the vacuum line? Incorvetti is correct as well. Does it initially go to 40 and drop or is it just 20?? An injector balance test may also help, it will test the injectors operation as well as give a non exact idea of their performance.
Last edited by Vets-Vet; Nov 6, 2023 at 09:20 AM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Thread Starter
Intermediate
Joined: Oct 2023
Posts: 33
Likes: 0
The smell of fuel is sometimes caused by a bad fuel pressure regulator, take the vacuum line off of it and smell it, is there fuel in the vacuum line? Incorvetti is correct as well. Does it initially go to 40 and drop or is it just 20?? An injector balance test may also help, it will test the injectors operation as well as give a non exact idea of their performance.
Thread Starter
Intermediate
Joined: Oct 2023
Posts: 33
Likes: 0
I'll check those too, I'll probably just buy a handful of vacuum lines and replace them since they're like 40 years old anyways
Drifting
Joined: Nov 2015
Posts: 1,670
Likes: 315
Finalist 2020 C4 of the Year - Unmodified
Fuel pressure check is hook up the gauge, ignition on NO START (don't start the engine). After a second or two, the pressure should increase and stay around 35-40psi. Ignition off, should hold that pressure, maybe drop a psi or two in the next half hour.
Over time, the pressure will drop, the point is to check at ignition on as that is when the fuel pump will prime, key is the amount and that it holds.
Over time, the pressure will drop, the point is to check at ignition on as that is when the fuel pump will prime, key is the amount and that it holds.