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 gvaughn54 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 ?

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CamaroCollector answered 9 years ago

Sounds a large vacuum leak at the brake booster

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gvaughn54 answered 9 years ago

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

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17,815

CamaroCollector answered 9 years ago

Your welcome

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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.

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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.

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