2 questions on 2 problems

[eat_sleep_jeep]

Wheel Spacers

Hey everyone.
#1
Ok, this one is goin to be hard to discribe. When I shut off my jeep, it bogs and doesn't quite turn off for a few seconds. It shakes and bogs like its trying to shut off but it can't. It only does this every once and a while. Also, When I turn it on sometimes, the revs drop real low likes its going to stall, and today it did stall. I'm thinking this could be the fuel filter or maybe even water in my gas tank? Hopefully its something simple like that. I figured I'd run it through the experts first before I tried anything.

#2
Everyone's gotta love the situations where you get all ready for work go out to start your jeep and it doesn't start. Well anyway, I turn the ignition to acc. and lights are dimming go to start it and nothing. loosen the connection and wiggle it around and it starts. Again, this only happens sometimes. Would this be a bad battery or bad terminals? Or is there no way of telling until you replace one of them?

Thanks a lot.

 

[88Wrangles]

#1. Most likely it is idleing too fast. It's like it keeps trying to run after you turn the key off, right? If it is an automatic, try leaving it in gear when you turn the key off, or just simply adjust the idle speed if you can.

#2. Which connections did you loosen and wiggle to get it to start? Try using some steel wool or sand paper and cleaning up the posts real good on the battery. clean anyother connections that look corroded or dirty

 

[mingez]

Yeah, the second issue on question one

Also, When I turn it on sometimes, the revs drop real low likes its going to stall, and today it did stall. I'm thinking this could be the fuel filter or maybe even water in my gas tank? Hopefully its something simple like that.

Fuel filter, or something simple like spark plugs. Or both. I had the same issue on my TJ right when I got it. Changed the fuel filter, plopped in a K&N and all new plugs and wires. The plugs were a bit corroded and had fuel element on them. After, it was like a whole new Jeep.

 

[Snitty]

the engine may be "dieseling" which is usually caused by high temperature or high compression... and happens pretty commonly in carbureted engines... the pressure/temperature of the fuel mixture left in the combustion chamber after you turn it off is igniting the fuel... a lot of carbon buildup in the chamber can raise compression enough a lot of times to cause low octane pump gas to compress enough until it reaches a high temperature (direct correlation between pressure and temperature) to ignite... and cycling the engine through to pull more mixture through the carb... it is called "dieseling" because that is exactly how a diesel engine runs... no spark plug, it relies on the compression to raise the temp enough at TDC to ignite the fuel mixture..

try running some higher octane for a week and see if it goes away.... get yourself some Seafoam and run it through...

if it is a temperature problem... might want to flush the cooling system.. now's not a bad time since winter is on its way

 

[88Wrangles]

Yes, and too high of an idle speed can also cause dieseling.