94 cevy 1 ton stalls at idle

Asked by Feb 05, 2014 at 04:27 PM about the 1994 GMC Sierra C/K 3500

Question type: Maintenance & Repair

has got a new egr valve, new map sensor, new iac motor, new tp sensor. plenty of gas. it seems like the ignition just shuts of it does start rite back up

2 Answers

11,475

This is a TBI 454 (or 350) correct? Does it die with a trottle input? Check to see if the fuel injectors are spraying after it dies and when you try to re-start it. If the ignition module has not been changed recently thats where I would start. Its bolted to the top of the baseplate in the distributor. The pick-up coil could be tested also. Most of the time the ICM fails completely but it's worth looking at and easy to change (make sure you use di-electric grease or the supplied grease between the module and the baseplate or it cooks quickley). The p/u coil is a little deeper, you must pull the dist to change and re-time the engine.

21,765

Look for a vacuum leak

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