View Full Version : Check engine light on......


supv26
May 12th, 08, 09:40 PM
The check engine light came on in our 1997 RS Convertible. It has the 3800 V-6 engine with the automatic transmission. I borrowed a scanner from work today and when I ran a scan it gave me a trouble code of P0300 multiple cylinder misfire.

The car runs fine and does not feel or sound like it has a miss. The exhaust doesn't stink like it did the last time it had a plug wire go bad. I unhooked the battery and then hooked it back up and started it and the light was still on.

What might be the problem this time........:sad::(

planemech2
May 14th, 08, 06:13 PM
Mine was a loose #6 plug wire.[LS1] Didn't give me a hard #6 fault but the P0300. Check all your plug leads,clear the code and see if it comes back.

supv26
May 14th, 08, 09:23 PM
Thanks for the info!!
I did not use the scanner to clear the code but I did check the wires (the ones I could see from the top anyway) and unhooked the battery and hooked it back up.
Today my wife drove the car about 75 miles and she said the check engine light did not come on and it ran fine.
So....:hurray:
I am thinking that I still may be having a coil issue. Ever since we bought the car it has has a very slight surging feeling when it needs to downshift sometimes. If you start up a hill and it gets very close to the point of shifting, it feels like it wants to surge just a bit. I usually just go ahead and make it shift by depressing the pedal just a bit more. My sister in law drove it one time and told me she thought something was wrong with the car. I told her that it has done that since we bought it and told her how I make it shift. It's not hardly enough to notice so I have never jumped into that issue to try and fix it. I just look at it as this is the nature of it.
:beers:

Everett#2390
May 15th, 08, 04:38 AM
I believe one can erase codes four ways, use the scanner/code reader, ground the service/diagnostic? wire, remove the HOT lead/fuse for a predetermined amount of time, say 3 or more minutes, or if no hard fault found in 50 starts, then PCM erases the fault code.