1993 Chevy Corvette Stall

Tiny
MIKE MCCLEERY
  • MEMBER
  • 1993 CHEVROLET CORVETTE
  • V8
  • 2WD
  • AUTOMATIC
  • 138,000 MILES
My 1993 corvette began stalling (at all speeds) about 2 weeks ago. The engine will stall as if it is starving for fuel. Somtiimes after a short rest it would start right back up, and other times it required a "shot" of starting fluid in the throttle body intake and it would start right up. The fuel pressure was ranging from 37-43. I suspected it may be a fuel filter or fuel pump problem. I took it to a mechanic (because I just couldn't reach the fuel filter without the proper tools), and the fuel pump, fuel filter, fuel pump relay switch were all replaced, and the ECM checked out OK (no codes). However, the mechanic was dumbfounded as the problem continues. It does have an after market chip (Hypertech with a 160 degree thermostat), after market cold air intake that have been in for over 6 months and ran cool and like a Banshee on fire. But now it will stall and seemingly "shut down" the fuel/electrical aspect to the engine. Any ideas as to what the problem is
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Wednesday, January 27th, 2010 AT 12:53 PM

4 Replies

Tiny
TOOOMANYTOYS
  • MEMBER
Have you taken a fuel sample. I have run across issues with the fuel cap area filling up with water due to a clogged drain. The water then seeps into the fuel tank.
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Wednesday, January 27th, 2010 AT 1:02 PM
Tiny
MIKE MCCLEERY
  • MEMBER
Please! I am asking a serious question and you give me a reply about water in the tank. The fuel system was drained when the fuel pump was replaced. If this is the type of answer you come back with, then I want my money back! I would expect a professional to come up with several options to explore. Water in the fuel line can result in a sputtering with acceleration. Same with a broken rotor or moisture in the optispark that can result in misfire/sputtering!
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Thursday, January 28th, 2010 AT 8:37 PM
Tiny
RASMATAZ
  • MEMBER
Is this a 305 or 350 CID and also is it a TBI or MPFI fuel injection system?
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Monday, February 1st, 2010 AT 3:05 PM
Tiny
JACK42
  • MEMBER
Actually on your Vette, the fuel tank doesnt have to be drained to remove the pump assembly. The pump assembly comes out the top through the filler area, what our mod answered will do what you described with a fuel injected engine. Have you taken a fuel sample? What does the fuel pressure do when it dies?(Manual gauge installed). Just to be sure it is fuel related. Can you hear the pump running when it wont start? Start basic with a new filter then go from there
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Monday, February 1st, 2010 AT 4:55 PM

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