# 95 geo prism 1.8L having serious run problems **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [August 27, 2008, 11:16pm UTC](https://community.cartalk.com/t/95-geo-prism-1-8l-having-serious-run-problems/18766 "2008-08-27T23:16:47Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![shaggy2929](https://avatars.discourse-cdn.com/v4/letter/s/f0a364/32.png) [@shaggy2929](https://community.cartalk.com/u/shaggy2929)\ **Post date:** [August 27, 2008, 11:16pm UTC](https://community.cartalk.com/t/95-geo-prism-1-8l-having-serious-run-problems/18766/1 "2008-08-27T23:16:47Z")
my check engine light came on and i noticed no difference in driving or idleing so paid no attention to it. About 5 months later a reacurring problem developed. the car would sputter and hesitate when u try to accelerate, the first time it happened i was almost T-boned for the malfunction. now the problem has been going on for 6 months. Dealership pulled code and sent me after a exhaust gauge regulator. $375 later and my run problem was still there. They also cleaned my fuel lines out whic did improve its performance initially, but within a month the problem was back. The car idles when it is still cold just fine, but once it reaches opperating temperature it picks up the hesitation, and if u try to accelerate it sputters and if you keep trying to accelerate it will die, sometimes giving a puff of smoke out of the air box (smells like oily exhaust). my car is not burning oil, i rarely hav to add any oil between changes, and i hav never seen the temperature gauge rise above normal opperating temp. I hav stumped many of the local mechanics, they are willing to throw parts at it, but its my money that is buying the parts… I have replaced my spark wires and plugs and cap recently, i also put a fuel filter on it. help please