WAITING FOR LIGHT TO CHANGE CAR TURNS OFF ...

  • Tiny
  • msamgab
  • 1997 Pontiac Transport
  • 119,000 miles

Waiting for light to change car turns off restarted drove home, next day turn car on misfirering and engine check light came on, connected code reader and code P0300 radom / multiple cylinder misfire detected came up, took the first two spark plugs out to check them they were ok put then back, turn car on the engine check light when off.

Do you
have the same problem?
Yes
No
Thursday, December 13th, 2012 AT 8:49 PM

11 Replies

  • Tiny
  • saturntech9
  • Expert
  • 29,879 posts

So its running smooth now?

Was this
answer
helpful?
Yes
No
Friday, December 14th, 2012 AT 2:34 AM
  • Tiny
  • msamgab
  • Member

Its still has the misfire

Was this
answer
helpful?
Yes
No
Saturday, December 15th, 2012 AT 10:48 PM
  • Tiny
  • saturntech9
  • Expert
  • 29,879 posts

So you still have a code P0300?

Was this
answer
helpful?
Yes
No
Sunday, December 16th, 2012 AT 6:41 AM
  • Tiny
  • msamgab
  • Member

Yes same code

Was this
answer
helpful?
Yes
No
Sunday, December 16th, 2012 AT 11:38 PM
  • Tiny
  • saturntech9
  • Expert
  • 29,879 posts

You need to check all the plugs wires connections etc.

Was this
answer
helpful?
Yes
No
Monday, December 17th, 2012 AT 6:09 PM
  • Tiny
  • msamgab
  • Member

Changed the spaark plugs and wires its still doing the same thing, like it wants to shutoff and then it shutsoff after a few mins.

Was this
answer
helpful?
Yes
No
Tuesday, December 18th, 2012 AT 10:56 PM
  • Tiny
  • saturntech9
  • Expert
  • 29,879 posts

Does it restart after it shut off by itself?Also did you look for a vacuum leak?

Was this
answer
helpful?
Yes
No
Wednesday, December 19th, 2012 AT 1:56 AM
  • Tiny
  • msamgab
  • Member

Yes it restarts after it shuts off, how do I check for a vaccum leak and where

Was this
answer
helpful?
Yes
No
Wednesday, December 19th, 2012 AT 3:16 PM
  • Tiny
  • saturntech9
  • Expert
  • 29,879 posts

You can use some carb spray while its idling spray around all the vacuum hoses intake manifold gasket etc. If the rpms go up down or it stumbles or dies you found a leak.

Was this
answer
helpful?
Yes
No
Wednesday, December 19th, 2012 AT 3:36 PM
  • Tiny
  • msamgab
  • Member

Thats how it started - stumbles, rpms go up and down then shuts off and thats when the engine light came on and the code P0300 show on the scanner, i'll try the spray and see what happens

Was this
answer
helpful?
Yes
No
Wednesday, December 19th, 2012 AT 4:45 PM

Please login or register to post a reply.

Similar Questions