Vette(s): 1982 Corvette Silver Blue with dark blue interior. No modifications.
This is a post to say thanks to all of you that posted regarding fuel pump issues, just wish I would have paid attention to the suggestions sooner. First off, let me say that I have been working on cars of all types for at least 40 years and during that time I had thought I had seen it all. I purchased a 1982 corvette last November, (my first), from a gentleman that had done a lot on the restoration side but the engine was a dog. After going thru the list of receipts of items that his mechanic had put on and going thru what I know about timing, sensors, etc., the car still was not running right and that made me feel that the motor was just living on borrowed time. I was beginning to put together a list of items needed to put a carburated engine in it as I had went thru everything I knew and then some. Rough idle, bogging down on take off and surging out on the highway This Cross Fire was getting to me!!! One of the items that had been replaced on this car by the last owner was a new fuel pump and even though some of the threads on here say check your fuel pressure I just couldn't see how the pump could be a part of the problem. This was a NAPA branded pump and their stuff is usally a cut above the other chain auto stores. As my last effort a few days ago, (after becoming so angry I was ready to strike a match to it), I finally purchased an in-line fuel pressure gauge at my local Autozone and removed the fuel filter and installed it. Guess what? 6 1/2 pounds of pressure, I couldn't believe it! This was the problem. I ordered the AC Delco EP 241 for the 1985 Corvette and installed it this afternoon. Upon starting the engine and checking the gauge there was 15 pounds of pressure! I have just returned from driving for two hours and this feels like a new car. The rough idle, bogging down on take off, surging on the freeway are all gone. Check the pressure before you do anything else.
Vette(s): 1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear,
Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.
I KNOW EXACTLY HOW YOU FEEL, WELCOME TO THE WOUNDERFUL WORLD OF CROSSFIRE!
wHEN EVERY THING IS RUNNING RIGHT THEY ARE FINE, BUT WHEN ONE THING GOES OUT A LITTLE, YIKES. I FINALLY GAVE UP AND PUT A CRATE MOTOR IN. GOOD LUCK WITH YOUR '82. I HOPE YOU NEVER HAVE TO GO THRU WHAT I WENT THRU.
Vette(s): 1982 C3 Collectors Edition 44000 miles, sat in the sun most of it's life, My wife purchased it for me for fathers day in 2007 from her girl friend that had it for 19 years. It is on the road again. I'm retired but it is now my daily driver.
Thanks for the post it and the credit to the web site. Fuel pressure and vacuum leaks will drive a crossfire into the dog category real quick.
By the way it will run great above 11psi as long as the amount of fuel is ok. Mine is down around 12psi with no issues. Before I replaced the fuel pump it would bog on hard take offs but run ok on the freeway. It runs much better every where now. Event the small block will light up the tires from a start.
I know it is childish to do that but I'm paying for the rubber so it is ok once in a while.
Good to hear you have the new pump installed. I went through 2 - 82 pumps and then decided to go with the AC Delco 85 pump with about the same 15 pounds. There are good discussions on the rest of the common problems that come up with our 82s. Use the search function to find them.
All the Best,
Nobody ever waves when I'm driving the Explorer.
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