Plenum seems fine. I had an OBD II reading done and only P0300 came up. Again, this only kicks on after I reset codes and then about 5 miles of travel after a cold start.. I have a Car MD hand held reader and it shows P0300 as well. Last time I had this issue My Car MD gave me P0302 and P0307 etc, before I changed the coil packs and everything else..
Just went through this myself with the P0300. Turned out to be a bad coil or rather a coil going bad, the misfires only happened after the engine got hot. Replaced the front coil cassette and everything's ducky again at my end.
I did the TB clean and the IAC clean. Both were filthy and black, started hard and blew smoke, ran really good until it got warm and the P0300 code came up again on my OBII reader. What's next, as you know I replaced both coil packs, plugs, and boots in June 2017.
After removing hold down bolts (2) from the EGR valve, it will not budge. Almost like its cemented in place. Am I missing something ? Is there a third bolt somewhere ? Or perhaps it will take a BFH to dislodge it . Would appreciate any advice.
I have a 92 Sedan Deville that did not come with any key fobs from the previous owner, and I was wondering if there was a way to tell if the car came factory with keyless entry. If I find out it did where can I get new key fobs?
Thanks in advance.