my 94 silverado rund great but after about 10 min AT INTERSTATE SPEED IT SGTARTS TO BACKFIRE BUT WKLL HOLD ABOUT 55 IF I BABY THE GASPEDAL, IF I STEP ON GAS IT SPUTTER AND BACKFIRES, i changed cat to

Asked by Sep 26, 2015 at 01:48 AM about the 1994 Chevrolet C/K 1500

Question type: Maintenance & Repair

155k miles, no check engine light no codes. new cat new plug wires and cap and rotor

5 Answers

97,635

Check your crankshaft sensor and also give your throttle body a good cleaner, use a good cleaner such as CRC...

I will try that. Dont i need rebuild kit for throttle body as well. I figure those filter screens r probably crap also. Do u think sock on fuelpump may play a role? Willcheck cranksensor .

56,885

Need to check fuel pressure at the TBI, it needs to be 9 to 12 lbs. and to be able to hold that pressure, not bleed off. Start by replacing the fuel filter, this can cause low pressure at the TBI.

im finding it hard to find info on crank sensor for my 94... I don't think it has one.. does it????

56,885

No crank sensor, no cam shaft sensor, that started 1996 with the vortec motor.

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