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Topic Review (Newest First)
08-03-2012 11:37 PM
krisak
Tools Needed? - ECM, Crank Pos Sensor, etc?

I have an 05 4.0L automatic that just started stalling, typically at or coming off idle. I read through a lot of threads here and have a list of parts to replace, but I'm stuck away from home and without my normal set of tools (and manuals) I keep in the Jeep. Which means that while I'm buying parts, I also need to buy the tools needed to replace them.

The list of what I'm going to replace so far is:
ECM
ASD Relay
Crank Position Sensor
Gas Cap (Don't really need a tool for that...)
(Any suggestions on other bits to replace would be helpful.)

Here's a full description of the issue if anyone wants to turn this into yet another "my Jeep is stalling" thread.

I'm in Las Vegas, where it's been humid and in the 90s the past week. A couple of days ago I noticed that the engine started idling a bit rough, but not enough to seriously worry me.

Today, while sitting at a light, the engine died suddenly. It didn't sputter out, rather died suddenly as if the key had been turned off. Wouldn't restart. So I pushed it off the road and popped the hood. I reseated a lot of the electrical connections, checked all the fuses I could. Tried to start - engine cranked, but didn't fire at all.

After about an hour and a half the engine had cooled significantly. I tried to start it again out of curiosity. It was a hard start, but it did start and drove me the last 1/4 mile the house I'm at. Then died while I was idling it into the driveway (again, very sudden shutoff, no sputtering).

I tried to get the codes on the odometer, but there were none. I've also never noticed air rushing in/out of the gas tank, and I usually don't fill up until about 1/4 tank.

I haven't had any issues while at speed - even running the engine up to 4000+ RPM. No hesitation, no loss of power or sputtering. I rarely use the AC, and it wasn't on any time the engine died.

Once I replace those parts listed above I'll begin to suspect the fuel system, at which point I'll have to take it to a shop. So I'm hoping it's something simple I can replace and avoid that. I don't mind the shotgun approach to fixing it - I just keep the extra parts in my garage in case they go out in the future.

(On a side note, it was cool to see that of the 1000s of cars that passed by while I was waiting for the engine to cool it was 3 separate Jeeps that pulled off and offered help.)

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