Tyler_Smith_28

Thank you @schardein@cruiser54@gogmorgo!!! You guys are amazing resources. It ended up being the fuel pump. Truck is running great again. It still has the check engine code 54, and not sure if there is a way to clear codes, or if it is an old code versus a re-occuring one. If it's a re-occuring code, I may go with a 95 cherokee distributor replacement and see if that fixes the issue. Thanks again! Tyler Smith

Hello, Does anyone know the correct fuel pressure for the 91 Jeep Comanche 4.0L? I did a fuel pressure test while running and it’s steady at 20 psi. Is this low? Also, I manually bypassed the fuel pump relay to keep the fuel pump on for a test without the engine running. It builds to 20 psi, but as soon as I turn off the pump, the pressure drops to 0 psi very quickly. I get engine misfires when the engine is in any gear but park or neutral. Also, sometimes the engine will just die. Also, I get check engine code 33 (AC clutch) & 54 (cam position sensor inside distributor, crank position speed sensor). There’s a very slight vibration in the harmonic balancer, but I don’t think it’s enough to cause an issue with the knock sensor. So far I have: > checked major grounds > sensor grounds > ensured vacuum line(s) integrity > cleaned throttle body Replaced: > Fuel injectors with brand new > Fuel Filter > Distributor with remanufactured > Rotor & Cap > Spark plugs wires & plugs > TPS > Crank Position Sensor > MAP Sensor

Yes.

Hello, My engine cranks over ~5 seconds before starting. It is a 91' comanche. I have replaced the fuel pressure regulator, associated vacuum line, and the fuel filter. I do not believe there is an issue with the fuel pump, because once the key is turned to the on position (before attempting to start), the fuel pump will come on and turn off very shortly after signaling that enough pressure has been built up. I believe the issue lies on the fuel side versus electrical. I have already replaced the distributor cap, rotor, spark plugs, and spark plug wires. It is a 4.0L I6. Thanks in advance! Tyler

Pete, I'm tried looking under posts you have done and I cannot find one. Can you drop me a link? Thank you, Tyler

Hello, I'm swapping my Jeep Comanche header to a 97-01 Jeep Cherokee XJ header. I assume the headlight circuit is the same, but how do you wire/configure the turn signals? Any help is much appreciated. Thanks! Tyler

I’m going to check the ground connection.

The motor is not getting voltage

I replaced the HVAC blower motor and resistor and air still doesn’t blow out the vents. The blower fuse is good and the associated connectors to the motor and resistor are in-tact. Any suggestions on why the blower motor does not turn on? It DOES NOT turn on in any position from low to high. Thanks in advance!

Thank you!

They are 28.9 inches tall and 9.3 inches wide.

Thanks! You're a great help!

Hello, Looking for a source of tubular doors for a comanche, new or used. The EAG ones online (Amazon and Ebay) are out of stock and I'm not sure when or if they will come back into stock. Thank you, Tyler

I'm going to look into this and get back to you. That would make a lot of sense. If a previous owner had replaced the transmission, and either forgot to or incorrectly reinstalled the tail housing, I could see why I could have this issue. Thank you! Tyler

Hello, I have an intermittent problem with my jeep comanche where it will only start in neutral. The ignition will not even turn over when in park sometimes. I'm looking for a solution to this problem. Thank you, Tyler