1990 Jeep Comanche Questions

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I have a jeep Comanche v6 4 wheel drive automatic it has a button to change from comfort to power could it be bad and cause truck to change gears funny? It won't maintain speed without shifting. At 55 you can't barely hit gas to maintain speed but will change fine if you give it more gas or a little less. Doesn't slip or hesitate just seems to downshift even when you try to maintain a certain speed.
It starts after several tries but sometimes it doesn't even make a sound like it will turn-on. Could it be electrical and if so how much would a repair like that be?
Affected turn signal is sluggish and labored.
New pump, no power to pump after initial prime. no electric to pump after it starts. What/where is ?trigger? to power the fuel pump after the engine starts.
Jeep is actually an 89, Starts just fine, runs till the fuel rail is empty then dies. But then starts right back up. Fuel pump primes, but won't run otherwise.

Any ideas what's wrong?
Recall 90V177000 describes the problem with my 1988 model. Engine reaces at start up. Not always but more frequently lately. Sometimes takes several attempts at re-start to get idle speed down to normal. Is dealer obligated to fix? The Recall says it's for 1990 models? How difficult is replacing the TPS sensor(s)?
I would like a fair price to repair or repace this part.
Can the fuel pump assembly be removed from the tank without removing the tank?
Rolled window down on my 89 comanche and would not roll back up, just get a clicking noise. Took door panel off but can't see how to get to the problem...behind sheet metal.Need advise,Mike
i have a 1990 jeep comanche and am having problems with the clutch slave and/or master cylinder the symptoms seem to be that the clutch lines won't seem to keep pressure in them and fluid leaks out of the bell housing i continuously need to keep putting fluid in the master cylinder can anyone help me pinpoint this problem? and help me find a solution? any feed back on this would be immensely appreciated!
I have a 1989 Jeep Comanche-I need to know how to calibrate/adjust TPS.4.0 liter motor.
I didn't have a selection for 1989 so I put 1990 above.
What would be some of the causes for water in the oil? Motor was recently rebuilt but sat up for 2 1/2 years before being started. Would over torqueing the head bolts effect the seal of the head gasket?
I have a 1988 Jeep Comanche that keeps blowing out slave cylinders. Just replace the slave and master cylinder. Seemed to fix it until I drove it for a day and it blew the slave cylinder out again. Any suggestions?
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