2000 Chevy Silverado running rough

Tiny
MONTE327
  • MEMBER
  • 2000 CHEVROLET SILVERADO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 231,000 MILES
Truck wouldnt start, did tune up. Plugs wires cap rotor. Still wouldnt start, it was fuel pump, replaced it. 3 days later runs really rough when cold, fine when warm. A month into this thought maybe pump was faulty so I took it back got a new one, no change. Replaced throttle position sensor, prior to that removed the wiring harness and it ran fine, plugged in back in ran poorly, so I replaced tps, no change. Also when it rains it wont start 80% of the time please help!
Saturday, October 30th, 2010 AT 10:01 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Are you getting a good hot blue snapping spark to the plugs?
Was this
answer
helpful?
Yes
No
Monday, November 1st, 2010 AT 11:24 AM
Tiny
GPLOH
  • MEMBER
  • 2 POSTS
I havent checked for that. I know have determined it runs rough only when wet and or rainy outside. 3 in the afternoon it doesnt do it. Crack in cap? Crank sensor bad?
Was this
answer
helpful?
Yes
No
Wednesday, November 17th, 2010 AT 7:32 PM
Tiny
BILLMORGAN
  • MEMBER
  • 1 POST
I am having the same problem with my 2000 silerado. Runs rough when wet, and if it sits over a 24hr period without starting it, it won't start. New fuel pump, fuel injector, plugs. Any ideas? Wiring shorting out from wetness?
Was this
answer
helpful?
Yes
No
Friday, March 11th, 2011 AT 6:59 PM

Please login or register to post a reply.

Sponsored links