WrangleDangle Posted March 5, 2015 Share Posted March 5, 2015 I've owned a 2004 TJ Wrangler Sport for a couple of years now and it has been stalling in 2nd gear the last few weeks. I gave the car to Berwick jeep service centre and all they tell me is that their computer doesn't show them what's causing it and that there is no problem. Has anyone had this issue? i know its not my driving!!! Quote Link to comment Share on other sites More sharing options...
Administrators Moses Ludel Posted March 6, 2015 Administrators Share Posted March 6, 2015 Hi, WrangleDangle...Problems like this can sometimes be vacuum related, or the idle air control (IAC), or even a worn throttle position sensor (TPS). The IAC and TPS should throw an engine code that the shop would read on the "computer" (scan tool), but not always. The TPS does wear out at higher mileage on these engines, and this switch can be tested for voltage output or simply replaced. When you have an actual engine code or "MIL" check light, you can read the code with a simple code reader like the inexpensive Harbor Freight variety or a better quality/more functions scanner if you like, your wallet depending. Without a code, I would check simpler things like the gas cap seal for the EVAP system. Try pressing the cap inward as you tighten it. Also, if you're experiencing issues with the cruise control or A/C switching functions, look for a vacuum reservoir, vacuum hose or vacuum check valve defect in the vacuum circuit. Check your engine vacuum hose connections, they sometimes get loose over time or split/crack and leak down. Let us know if this helps and what you find. Glad to continue the troubleshooting! Moses Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.