1998 Chevy Astro missing fire

1998 CHEVROLET ASTRO
250,000 MILES • 6 CYL • 2WD • AUTOMATIC
Avatar
JACQUES1998
  • MEMBER
  • 1 POST
I buy a chevy astro 1998 last mount i drove it for a while with no prolem unless some miss fire on the hyway last week my check engine come on so i rent to a shop repair and the mecanic do some test code mutiple miss fire (fuel pump pressure and some) and everything\r\nwas ok so mecanic tell me that i need a tune-up I came back to my home and do the tune-up (spark plug wires dist cap rotor and ignition coil)after that nothing better rough idle engine stop at light fire missing on the hyway
Jun 3, 2010 at 2:50 AM
Avatar
RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Engine running rough or misfiring can be cause by the following-inspect and test all the following below:
1.Defective spark plug.
2.Inadequate spark/coil,defective spark plug wire.
3.Lack of compression
4.False air leakage.
5.Faulty fuel injectors.
6.Insufficient fuel pressure.
7.Contaminated fuel.
8.EGR valve that is leaking.
9.Oxygen sensors.
10.Throttle position sensor.
11.Idle air control valve.
Jun 3, 2010 at 7:33 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle