4.3l chev pu starts,runs poorly and stalls when the brake is applied. This just began this morning it ran fine on the way home last night.

Asked by Mar 24, 2015 at 05:55 PM about the 1994 Chevrolet C/K 1500 Silverado Extended Cab LB 4WD

Question type: Maintenance & Repair

I have a 1994 Chev 1/2 ton ext cab 2wd w/ about 250,000mi. It has been a great truck. This morning it started but ran really rough and would hardly accelerate. every time I applied the brakes it stalled . Last night  when I drove home it ran just fine what could have happened  overnight ?

3 Answers

8,185

Sounds a large vacuum leak at the brake booster

1 of 1 people found this helpful.

Hey CamaroCollector, Sorry I took so long to reply. I disconnected the vacuum line from the booster and plugged it with a chapstik cap and she runs like a champ. Of course the brakes don't work so very good ,but that's an easy fix. Thanks for the insight. gvaughn54

8,185

Your welcome

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