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| Low Idle - Caused stalled vehicle http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=1&t=8200 |
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| Author: | TimG517 [ Thu May 04, 2006 10:57 am ] |
| Post subject: | Low Idle - Caused stalled vehicle |
I have an 02 Liberty Limited with 67,000 miles. I have recently noticed that when I stop at a light or stop sign the RPM's dip to about 500. The Jeep seems to feel like it is going to stall. This lasts for a few seconds, maybe about 30, then the RPM's are back up to 6 or 700. Today, I pulled into a parking spot at work, but had to correct my position. When I put the Jeep in reverse, it stalled. Of course, it started right up again. It only stalled after the RPM dipped (like it always does). I am wondering if this is simply the spark plugs, or what it could be. Any help here would be appreciated. Thanks. |
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| Author: | 2006KJSPORT4x4 [ Thu May 04, 2006 11:04 am ] |
| Post subject: | |
I had that same thing happen with my '95 Dodge Avenger....i changed the EGR valve, spark plugs, had the fuel lines and pump replaced, and it still happened to me...whenever having to stop at a red light i'd have to drop it in neutral and give a little push on the accelerator to help keep it from stalling....never found out what was really causing it though and then the engine locked up on me one day. So I guess check your pulley's and belts make sure they are at the proper tension as well, that wouldn't hurt i suppose. Good luck getting it diagnosed, everywhere i took my Dodge they just said it might be an EGR valve but it was brand new by the time they started saying that..... |
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| Author: | waddy whiteguts [ Thu May 04, 2006 1:43 pm ] |
| Post subject: | |
Check for vacuum leaks at hoses and intake manifold. |
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| Author: | gopherbeats [ Thu May 04, 2006 2:10 pm ] |
| Post subject: | |
When is the last time you changed your plugs? If it is more than 30k I would definatly change the plugs. Other things to try: Get a can of fuel injector cleaner, I use Chervron with Techron.. Good stuff! Will cost you about $7.50 for a can that treats 20 gal. |
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| Author: | Wade in Burgaw [ Wed May 10, 2006 6:34 pm ] |
| Post subject: | |
I have an 02 and had very similar problems that got worse over time. A friend recommended I pull and check the idle air control. It was dirty so I cleaned it up with some contact cleaner and the symptoms immediately went away. A couple of weeks later thay started back up so I put a new one in and haven't had any problems since. That's probably been six months ago. |
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| Author: | Jeepin Al [ Wed May 10, 2006 7:55 pm ] |
| Post subject: | it may be common |
This same thing happened with my 5.0 L powered Volvo wagon (Mustang 5.0 in a 240 wagon, what a sleeper!) and it happens to my KJ. The thottle body and thottle position sensor would get dirty. Take the beather tube off the thottle body and take the position sensor off the side of the body and clean both the body and sensor well with acceptable cleaner. Be VERY careful. Some of the cleaners will not compress, and you may bend a valve. I did this on my old 76 Jeep Wagon and I bent a push rod. Try this first, it should help. Al |
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| Author: | Jeepjeepster [ Wed May 10, 2006 8:51 pm ] |
| Post subject: | |
Pump some seafoam through it, thatll fix it right up! |
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| Author: | TimG517 [ Tue May 16, 2006 1:54 pm ] |
| Post subject: | |
Update: Took Jeep (finally) to dealer who I purchased it from, still under warranty. They did 3 things 1. New spark plugs 2. Cleaned out throttle body - it was "very dirty" 3. Replaced a gasket somewhere between the transfer case and transmission because there was a leak. I was there for 7 hours, as I live 1 hour from the dealer now. Drove the Libby home, and it runs like a champ. FYI, my old Jeep (96 XJ) was in a 9 hour traffic jam on 75 in Kentucky. It didn't overheat, or anything. Ran great. Got into 2 accidents, both at low speeds, one hit the trailer hitch, one my brother hit someone with the tow hooks. The XJ has 140,000+ miles and runs like a champ. He drove from Detroit to Lexington (17 hour total). Lexington to Louisivlle, Louisville to Detroit with not one issue (besides 9 hour traffic jam, and 2 minor accidents). I miss the old XJ. |
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