Car shut off while driving
Thread Starter
5th Gear
Joined: Apr 2010
Posts: 5
Likes: 0
From: Elizabeth City North Carolina
Car shut off while driving
I just brought a 1991 vette. It hasn't been driven in a while. I changed the wires and plugs in it Friday then took it out for a test run. While driving I hit the accelator and got the car up to 80 mph or so, I decreased my speed and the car shut off. I tried to restart the car but it wouldn't start. After about 5 mins the car started but was sputtering. I drove the car today and everthing was fine. Has anyone had any problems like this? Could it be my fuel pump is sticking and needs replacing? Please help!
Le Mans Master
Joined: Jan 2006
Posts: 5,621
Likes: 207
From: Orlando FL
A clogged fuel filter will show up at the higher speeds (80 or so) when more fuel is required by the engine. I would start out replacing the fuel filter. 
How long has it been since you replaced it?
How long has it been since you replaced it?
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
Pro
Joined: Oct 1999
Posts: 515
Likes: 0
From: Nashua NH
If after changing the filter you have the same problem, try taping a fuel pressure gauge to the windshield and see what your pressure is under load. But as was stated before, do the proper diagnostics according to your FSM (you DO have a field service manual, right?) and save yourself a lot of time, money, and aggravation.
7th Gear
Joined: Aug 2009
Posts: 7
Likes: 0
From: Fairfield ca
my 91 was doing the same thing i replaced the stock fuel injectors with some Bosch design 3s and now the car runs like a dream. from what i learned on the forum the stock injectors aren't very good and should be replaced. call jon at FIC
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Team Owner
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From: Athens AL
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Fuel filter should be changed as regular maintenance, but if the problem returns then I'd check spark to each cylinder, and go through all the diagnostics in the manual for the coil and ignition module.
Drifting
Joined: Jan 2008
Posts: 1,752
Likes: 62
From: New Madison Ohio
Had a similar problem on my 93GP just quit running. I had a bunch of things thrown at me on what it may be. I had it towed and done a scan on it, ended up being the fuel pump. So what Colt and Muffin said are spot on...good luck to ya...
Safety Car
Joined: Jan 2008
Posts: 3,939
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From: Vero Beach Florida
1985-1991: ECM Codes
Code #12: Normal No Codes.
Code #13: Open Oxygen Sensor Circuit.
Code #14: Coolant Sensor Circuit Low.
Code #15: Coolant Sensor Circuit High.
Code #21: Throttle Position Sensor High.
Code #22: Throttle Position Sensor Low.
Code #23: Manifold Air Temperature Circuit High.
Code #24: Vehicle Speed Sensor.
Code #25: Manifold Air Temperature Circuit Low.
Code #32: EGR System Failure.
Code #33: Mass Air Flow Sensor High.
Code #34: Mass Air Flow Sensor Low.
Code #36: Mass Air Flow Sensor Burn-Off Function Fault.
Code #41: Cylinder Select Error.
Code #42: Electronic Spark Timing.
Code #43: Electronic Spark Control.
Code #44: Lean Exhaust indication.
Code #45: Rich Exhaust Indication.
Code #46: Vehicle Anti Theft Fault.
Code #51: Faulty Mem-Cal.
Code #52: Fuel Calpak Missing.
Code #52: (1990-91 Corvette Only): Engine Oil Temperature Sensor Low.
Code #53: System Over Voltage.
Code #54: Fuel Pump Circuit Low Voltage.
Code #55: Defective ECM.
Code #62: Engine Oil Temperature Sensor Circuit High.
Code #12: Normal No Codes.
Code #13: Open Oxygen Sensor Circuit.
Code #14: Coolant Sensor Circuit Low.
Code #15: Coolant Sensor Circuit High.
Code #21: Throttle Position Sensor High.
Code #22: Throttle Position Sensor Low.
Code #23: Manifold Air Temperature Circuit High.
Code #24: Vehicle Speed Sensor.
Code #25: Manifold Air Temperature Circuit Low.
Code #32: EGR System Failure.
Code #33: Mass Air Flow Sensor High.
Code #34: Mass Air Flow Sensor Low.
Code #36: Mass Air Flow Sensor Burn-Off Function Fault.
Code #41: Cylinder Select Error.
Code #42: Electronic Spark Timing.
Code #43: Electronic Spark Control.
Code #44: Lean Exhaust indication.
Code #45: Rich Exhaust Indication.
Code #46: Vehicle Anti Theft Fault.
Code #51: Faulty Mem-Cal.
Code #52: Fuel Calpak Missing.
Code #52: (1990-91 Corvette Only): Engine Oil Temperature Sensor Low.
Code #53: System Over Voltage.
Code #54: Fuel Pump Circuit Low Voltage.
Code #55: Defective ECM.
Code #62: Engine Oil Temperature Sensor Circuit High.
