problem with this code. p0300 random multiple missfire..
problem with this code. p0300 random multiple missfire.. the car is stock without bolt ons.. this code is driving me its an auto 99 trans am.. the car sputters like a put put and the ses light just blinks and it has no power. all packs are getting spark and the engine fuse isnt blowed.. any suggestions
Check that PVC line coming out of the passenger side of the throttle body.
I had a hole on the bottom of that rubber 45 degree elbow. others have the hard plastic line crack in the back.
I had a hole on the bottom of that rubber 45 degree elbow. others have the hard plastic line crack in the back.
I have a '99 Sonoma that I was getting a PO300 Code as well as another code (the # escapes me at the moment) which was Crankshaft Position Sensor Intermitent Signal. I replaced the CKP Sensor with a stock GM piece and it seems to be better. Is the PO300 the only code you're getting?
I have a '99 Sonoma that I was getting a PO300 Code as well as another code (the # escapes me at the moment) which was Crankshaft Position Sensor Intermitent Signal. I replaced the CKP Sensor with a stock GM piece and it seems to be better. Is the PO300 the only code you're getting?
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I went out to check my pvc line and sure enought it had a big
hole at the bottom of the elbow.
https://ls1tech.com/forums/general-m...mg-begins.html
I don't know if this link will work for you:
http://www.autozone.com/autozone/cat...entId=cat30067
But that shows what the check valves look like.
I don't know if this link will work for you:
http://www.autozone.com/autozone/cat...entId=cat30067
But that shows what the check valves look like.
https://ls1tech.com/forums/general-m...mg-begins.html
I don't know if this link will work for you:
http://www.autozone.com/autozone/cat...entId=cat30067
But that shows what the check valves look like.
I don't know if this link will work for you:
http://www.autozone.com/autozone/cat...entId=cat30067
But that shows what the check valves look like.
Teching In
Joined: Jan 2009
Posts: 1
Likes: 0
hey i am new to this form stuff and dont know how to start my own, but i have a 99 fbird with a 3.8 and im gettting the multiple random missfire aswell. i dont really have a clue of where to start, iv replaced all my coils plugs and wires. it has been sitting for over a year now due to this problem. any suggestions please
Hey check your crank sensor it on the passenger side above the starter. This happen to me it would run awesome for about 2 sec then have no power. Or it could be your crank sensor.
Also check your airfilter sensor that plugs into your air filer that small one in front of the T.BODY
Also check your airfilter sensor that plugs into your air filer that small one in front of the T.BODY
