So, I drive a 2000 Pontiac Firebird, a couple weeks ago I was driving on a trip of about 184 miles, and let’s say in mile 174 my car starts having these issues: when I’d get to a certain speed (say 50mph) the service engine soon light would constantly blink. Also, meanwhile pressing on the Rev with any real force would shoot it up to 4000+rpm unless I did it real softly.
Furthermore, I think my speedometer was way out of order to the actual speed my car was going (i think it was trying and failing to match it to my car revs? Not sure). After keeping it from blinking by limping for like 10 minutes, my car returned to normal and allowed me to accelerate like normal. Would this be a trans issues? I checked my computer and a P1080 code came back along with codes for 2 cylinder misfires. Not driving it long distances till I can get this resolved so any help would be greatly appreciated.
I didn’t go above 80 the whole way my drive back and it didn’t do it at all 🤔
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I would clean the maf (with the correct cleaner!) and inspect all vacuum hoses, especially pcv. You could also swap the coil and plug to different cylinders so if a misfire code comes back you can usually tell what caused it. I think these have the coils that go to two cylinders. Probably not a transmission issue and more likely a limp home mode.