Blazer has really rough idle and barely wants to run
What is your question?
Blazer has really rough idle and barely wants to run until you press the brake pedal then runs better, what could this be?
What makes this problem better or worse?
Pressing on brake pedal
How long has your 1999 Chevrolet Blazer had this problem?
Vehicle has been park for 2 years because of this
1 Reply
Popular Answer
DaveJMon Dec 6, 2020
When you press on the brake pedal, you engage the power brake booster, which is driven by engine vacuum. There could be a vacuum leak in the engine or an air intake problem. I would focus in this area for testing. www.repairpal.com/repair-shops
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