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Astro van 1999 4.3 vortec v6
1999 Chevrolet Astro

Astro van 1999 4.3 vortec v6

(1999 Chevrolet Astro)
van runs good on flat roads when i go up hills and it shifts into over drive van shakes and engine light flashes and then goes steady, as specialy on hiway, i go light on gas never does this .???
What seems to make the problem better or worse? its better light on gas all around its great.
How long have you had this problem? 4 years
Tags: chevrolet, astro
1 answer & 1 comment
Popular Answer
on July 14, 2019

The engine is MISFIRING - - Basically an old fashion TUNE UP is what it needs!

Sign in to reply
on July 14, 2019

Distributor cap AND rotor ➕ Spark plug wires AND spark plugs.

ACDelco parts recommended..

Very common for misfire to occur intermittently and under a particular engine load condition ..
As in going up hills and / or transmission shifts into higher gear!

Good luck!
General Diagnosis
$88 - $111 Learn More
on July 14, 2019

The engine is MISFIRING - - Basically an old fashion TUNE UP is what it needs!

Sign in to reply
on July 14, 2019

Distributor cap AND rotor ➕ Spark plug wires AND spark plugs.

ACDelco parts recommended..

Very common for misfire to occur intermittently and under a particular engine load condition ..
As in going up hills and / or transmission shifts into higher gear!

Good luck!

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