WAITING FOR LIGHT TO CHANGE CAR TURNS OFF ...

1997 Pontiac Transport

Tiny

msamgab

December, 13, 2012 AT 8:49 PM

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.

11 Answers

Tiny

saturntech9

December, 14, 2012 AT 2:34 AM

So its running smooth now?

Tiny

msamgab

December, 15, 2012 AT 10:48 PM

Its still has the misfire

Tiny

saturntech9

December, 16, 2012 AT 6:41 AM

So you still have a code P0300?

Tiny

msamgab

December, 16, 2012 AT 11:38 PM

Yes same code

Tiny

saturntech9

December, 17, 2012 AT 6:09 PM

You need to check all the plugs wires connections etc.

Tiny

msamgab

December, 18, 2012 AT 10:56 PM

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.

Tiny

saturntech9

December, 19, 2012 AT 1:56 AM

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

Tiny

msamgab

December, 19, 2012 AT 3:16 PM

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

Tiny

saturntech9

December, 19, 2012 AT 3:36 PM

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.

Tiny

msamgab

December, 19, 2012 AT 4:45 PM

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

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