Another backfiring/ hesitation thread....89 2.5
Alright guys I've read and read about this problem but it seems as if my situation is a little more unique than the standard hesitation/ backfiring thread.
So yesterday I started my 4 hour roadtrip in the old girl and she was running like a top. Cuising in 5th gear at 75 mph doing 2900 rpm and with the occasional 4th gear pass, nothing too crazy. Well the first 3 hours of the 4 hour trip where great. (I also stopped and filled up at shell at the 2.5 hour mark). Well about 45 mins out of my destination **** seemed to hit the fan. She would bog down and hesitate to about 55 miles per hour them I would change to 4th gear and every time with that chance she would backfire and I would barely have enough power to maintain speed. Then she would act fine and run great for a minute then do it again. I was almost full on gas and had been driving her for the better part of 3 hours, so my question is what could possible be causing this?
1 if it where a worn timing chain, wouldn't it be plenty heated up by the first hour let alone he third hour and start showing play? And besides the hesitation was intermittent so wouldn't that rule it out?
2 cat. Wouldn't the same thing go for the cat? Wouldn't it run like crap the whole time? I stead of the third hour of the trip?
3 tps, I just replaced my tps a month ago, could your tps go bad I'm such a short time?
4 I was using good gasoline from shell, so I don't think bad gas was the problem.
I'm at a loss on this one guys. Thanks for the help!