Why it wants to stall at light OR stop sign???

Asked by Janet Jul 04, 2023 at 10:01 AM about the 2000 Chevrolet Blazer LT 4-Door 4WD

Question type: Maintenance & Repair

When you step on gas goes fine,at light OR stop sign it wants to stall????

307,255

Gene answered 9 months ago

Slow IAC valve, dirty throttle body, unmetered air leak, TPS has a bad spot in it right at the idle position.

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38,925

beatupchevy answered 9 months ago

What do the plugs look like ?

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202,455

Ed92626 answered 9 months ago

Reasons why an engine can run right, but stall while idling: Faulty oxygen or mass airflow sensor Clogged EGR valve Bad spark plugs Idle air control valve problem Fuel delivery system problems Malfunctioning transmission

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Janet answered 9 months ago

Thank You all !! Ive thought of a few things you all mentioned...The person who mentioned spark plugs thats where we were gonna start..It runs great when you step on gas,wants to stall but doesnt at lights...Cha ching Oh boy!!!!!

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Why it wants to stall at light OR stop sign??? 4 Answers

When you step on gas goes fine,at light OR stop sign it wants to stall????

2000 Chevrolet Blazer LT 4-Door 4WD

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Maintenance & Repair
I have a 1999 Chevy Blazer, 4x4, 4.3 vortec. We have changed the coil pack, fuel filter, distributor cap and button, the crank shaft sensor, cam sensor and plug wires as well as the ignition control module. We coming to a stop sign it will stall and sometimes when just sitting still. Sometimes it will start right back up and other times it takes several tries. I also have the oxygen sensor on order and it should be here tomorrow. Fuel pressure tested perfectly. No black smoke, no smell of rotten eggs or the cat glowing red. The only code that comes up is PO420. 4 Answers

I have a 1999 Chevy Blazer, 4x4, 4.3 vortec. We have changed the coil pack, fuel filter, distributor cap and button, the crank shaft sensor, cam sensor and plug wires as well as the ignition control m...

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Why it wants to stall at light OR stop sign???

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Why it wants to stall at light OR stop sign???

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