Diesel
New Member
Hi all, I'm relatively new here, great to find a place with a wealth of info!
So my 03 Liberty 3.7 with 98K miles is stalling out on me intermittently. It's got a handful of weird symptoms, and not sure which (if any) are related to the cause.
1) The MAIN problem is that my Liberty keeps stalling out. The engine just stops- no sputtering, jerking, etc. It's as if I turned the key off. More often than not it happens when I've been driving 40+ and come to a stop or get off on an exit. When it dies, the tach seems crazy, jumping back and forth all over the place even though the engine is not running. It usually take a few tries to get it restarted. The engine cranks but doesn't "catch" until the 3rd or 4th try. It sometimes tries to start and the tach goes crazy and dies again.
2) When running, the Tach seems to continually adjust anywhere from about 500 to 1100, even after it's warm and been running for quite a while.
3) Sometimes the overhead lights flicker on and off, and the dashlights get bright/dim. I figured this was a switch on a door or gate, but would that affect the dimming as well? Anyway I dialed the dimmer on the turn signal back to off. This problem has been going on for about a year, WAY before my Liberty was stalling.
4) The engine isn't "pulling." Typically if I'm at a stop and lift my foot off the brake, the engine will pull me slowly forward. Now sometimes it won't. In fact, sometimes it seems like I need to give it a little gas to get going. I wouldn't necessarily call it a "slip," but along the same lines.
5) My check engine light came on about a year ago, and the code came up as an O2 sensor. It was intermittent and they said don't worry about it, especially if it's not continuous. It went away relatively quickly.
The first time my Liberty died, I pulled the codes and I got 4 of them-
#P0841 – Trans Fluid Press Sensor/ Switch A / CKT range/perf
#P0340 – Camshaft Position Sensor A- Bank 1 Circuit Malfunction
#P0122 – TPS/Pedal Position Sensor A Circuit Low Input
#P1299 – Manufacturer Control Fuel Air Metering
I took it to a shop, they replaced the plugs (98K miles) and recommended new Coils, a new Throttle Body, and about 4 other sensors. It seemed like they didn’t have a clue and were throwing the kitchen sink at it, so I stuck with the plugs only and would try to figure it out with other help.
I replaced the Camshaft Position Sensor but a couple days later it continued stalling. Now when I pull the codes it still shows #P0340 Camshaft Positions Sensor and #P0841 Trans Fluid Pressure.
So I’m at a complete loss! I don’t want to go to the dealer for sensors I can easily replace. Nor do I want to have them start replacing things willy-nilly. So I’m at your mercy, hoping someone might have a few ideas for me. (PHEW, I know that’s a lot of detail!)
-Jonathan
So my 03 Liberty 3.7 with 98K miles is stalling out on me intermittently. It's got a handful of weird symptoms, and not sure which (if any) are related to the cause.
1) The MAIN problem is that my Liberty keeps stalling out. The engine just stops- no sputtering, jerking, etc. It's as if I turned the key off. More often than not it happens when I've been driving 40+ and come to a stop or get off on an exit. When it dies, the tach seems crazy, jumping back and forth all over the place even though the engine is not running. It usually take a few tries to get it restarted. The engine cranks but doesn't "catch" until the 3rd or 4th try. It sometimes tries to start and the tach goes crazy and dies again.
2) When running, the Tach seems to continually adjust anywhere from about 500 to 1100, even after it's warm and been running for quite a while.
3) Sometimes the overhead lights flicker on and off, and the dashlights get bright/dim. I figured this was a switch on a door or gate, but would that affect the dimming as well? Anyway I dialed the dimmer on the turn signal back to off. This problem has been going on for about a year, WAY before my Liberty was stalling.
4) The engine isn't "pulling." Typically if I'm at a stop and lift my foot off the brake, the engine will pull me slowly forward. Now sometimes it won't. In fact, sometimes it seems like I need to give it a little gas to get going. I wouldn't necessarily call it a "slip," but along the same lines.
5) My check engine light came on about a year ago, and the code came up as an O2 sensor. It was intermittent and they said don't worry about it, especially if it's not continuous. It went away relatively quickly.
The first time my Liberty died, I pulled the codes and I got 4 of them-
#P0841 – Trans Fluid Press Sensor/ Switch A / CKT range/perf
#P0340 – Camshaft Position Sensor A- Bank 1 Circuit Malfunction
#P0122 – TPS/Pedal Position Sensor A Circuit Low Input
#P1299 – Manufacturer Control Fuel Air Metering
I took it to a shop, they replaced the plugs (98K miles) and recommended new Coils, a new Throttle Body, and about 4 other sensors. It seemed like they didn’t have a clue and were throwing the kitchen sink at it, so I stuck with the plugs only and would try to figure it out with other help.
I replaced the Camshaft Position Sensor but a couple days later it continued stalling. Now when I pull the codes it still shows #P0340 Camshaft Positions Sensor and #P0841 Trans Fluid Pressure.
So I’m at a complete loss! I don’t want to go to the dealer for sensors I can easily replace. Nor do I want to have them start replacing things willy-nilly. So I’m at your mercy, hoping someone might have a few ideas for me. (PHEW, I know that’s a lot of detail!)
-Jonathan
