I have a 1987 Jeep Wagoneer 4x4 with 4.0 I6. The Jeep is driven everyday.
1. I have a problem with the jeep having a very high idle. The high idle starts right after the jeep is started, but it does not occur all of the time. The high idle can occur when the Jeep is cold in the morning (normal), but also after the Jeep has been driven 40 miles shut off and left to sit 10 minutes and then started back again. The high idle does not happen all of the time, but has been known to happen in all weather conditions rain or shine.
2. I also have a problem with my jeep just cutting off after it has been running for well over thirty minutes and brought up to operating temperature. I will come to a stop sign or light. The engine will be running quiet and smooth at a low rpm. It sometimes makes me wonder if the engine is running, but I know that it is by the voltage output gauge and oil pressure gauge. As I start to accelerate from a stop, the engine will just cut off and then things are really whisper quiet. Also this problem does not happen all of the time.
I do not know if these two problems are related, but I wanted to give as much information as possible. Does anyone have any ideas where I might start looking for the cause of these problems? Thanks for the help.
1. I have a problem with the jeep having a very high idle. The high idle starts right after the jeep is started, but it does not occur all of the time. The high idle can occur when the Jeep is cold in the morning (normal), but also after the Jeep has been driven 40 miles shut off and left to sit 10 minutes and then started back again. The high idle does not happen all of the time, but has been known to happen in all weather conditions rain or shine.
2. I also have a problem with my jeep just cutting off after it has been running for well over thirty minutes and brought up to operating temperature. I will come to a stop sign or light. The engine will be running quiet and smooth at a low rpm. It sometimes makes me wonder if the engine is running, but I know that it is by the voltage output gauge and oil pressure gauge. As I start to accelerate from a stop, the engine will just cut off and then things are really whisper quiet. Also this problem does not happen all of the time.
I do not know if these two problems are related, but I wanted to give as much information as possible. Does anyone have any ideas where I might start looking for the cause of these problems? Thanks for the help.