CEL Again

[Rolla]

I think I posted this in the wrong forum before

Well after a replacement MAF was installed 50 miles went by and the CEL came on again. This time the code that was there was P1128 I have read that this might be a bad oil filler seal. I checked the seal and it seemed fine. What all should I check? Thanks in advance.

Also the oil filler seal advise is what I found from Loren on this site :)

And the Plot thickens. Today right after startup driving up hill I hear to loud thuds behind me and the CEL starts flashing :(. So I turn around and coast into my driveway. Hook up the code scanner and find codes P0300 P0301 P0302 P0303. Telling me that there is a misfire in the cylinders 1-3. so to see if this keeps up I cleared the codes and restarted the car with no noticable misfires everything seems fine now. Any ideas what on earth could cause this? Thanks in advance.

Edited November 17, 2004 by Rolla

[LVDell]

Wow! That is something you really need to go get checked out. Clearing the codes in hopes that it will go away can be more costly than you might think. Clearly the 1128 would have been acceptable to see if it goes back on...

check out this thread and see Loren's comments about 1128

http://www.renntech.org/forums/index.php?s...c=2555&hl=P1128

But, when you start hearing loud thuds and you want to see if they will come back you are probably heading down a path you down't want to venture. Sure it may be nothing more than a misfire, but do you really want to risk that? FYI....A CHECK ENGINE LIGHT FLASHING IS DEFINED AS STOP DRIVING AND HAVE TOWED TO DEALER IMMEDIATELY!

[Rolla]

LVDell The thud seems to be the misfire. but it has not done it since. I have parked the car. and later to day I am going to jack it up and schange oil, spark plugs, fuel filter and air filter as well as looking for leaks. BTW what is the best way to look for leaks? TIA

[LVDell]

Leaks? What type? If you have any pronounced leaks (like oil, coolant, etc.) that is something that should be evident on the garage floor.

The preventative maintenance may do the trick. You can commonly misfire due to bad plugs, fuel filter, air filter.

[Rolla]

I have seen no leaking but you never know if it is small. Today I am replacing the fuel filter, spark plugs and air filter and changing the oil. IE a very large hammer to kill a fly.