# 1998 VW Jetta GT, fuel injector issue **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [October 18, 2011, 4:53pm UTC](https://community.cartalk.com/t/1998-vw-jetta-gt-fuel-injector-issue/68754 "2011-10-18T16:53:07Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Caddo](https://avatars.discourse-cdn.com/v4/letter/c/76d3ee/32.png) [@Caddo](https://community.cartalk.com/u/Caddo)\ **Post date:** [October 18, 2011, 4:53pm UTC](https://community.cartalk.com/t/1998-vw-jetta-gt-fuel-injector-issue/68754/1 "2011-10-18T16:53:07Z")
A couple of months ago I got a “check engine” light and the codes came up as P1240, Injector Circuit open cyl 4 and P1228, Injector Circuit Cyl 4 short to circuit. The codes will go away and come back. I’ve checked the circuits on the wiring and all ohms out ok. If I reset the codes the car will run great for 5 to 60 miles then the car will start missing again and the codes re-appear. Could it possibly be the actual injector? If so, why does it run great if I reset the codes? What am I missing? Seems like it should be a simple fix but I’m stymied Suggestions anyone??? ---
**Author:** ![ok4450](https://avatars.discourse-cdn.com/v4/letter/o/e9bcb4/32.png) [@ok4450](https://community.cartalk.com/u/ok4450)\ **Post date:** [October 18, 2011, 5:46pm UTC](https://community.cartalk.com/t/1998-vw-jetta-gt-fuel-injector-issue/68754/2 "2011-10-18T17:46:20Z")
It could be that the wiring, like a human hair, inside the injector is breaking down electrically due to heat. Clearing the codes may not be what causes the car to run fine for a while. The improvement is probably due to the fact that the injector has cooled in the interim. To a lesser extent, heat can also affect wire connector terminals. (Injector plug, ECM plug, etc.) ---
**Author:** ![Caddo](https://avatars.discourse-cdn.com/v4/letter/c/76d3ee/32.png) [@Caddo](https://community.cartalk.com/u/Caddo)\ **Post date:** [October 19, 2011, 6:23pm UTC](https://community.cartalk.com/t/1998-vw-jetta-gt-fuel-injector-issue/68754/3 "2011-10-19T18:23:29Z")
Thanks Ok…i’ll give it a shot and let you know …cheers