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Hello. I have been having an issue with my 88 Comanche. 1 out of 5 times (more or less) when I start my engine, the rpms rise to 4000 and stay there until I unplug the 3 prong part of the TPS sensor. My truck is an automatic so it has the 3 and 4 prong clips. After I unplug it, the rpms go back down to normal. I plug it back in and everything is fine. I thought my sensor was bad so I just replaced it with a new one. But lo and behold the same thing happened when I went to start my truck, testing out the new sensor. I'm not sure what to check now. Any help would be appreciated. Thanks.

Okay so when I try to pull the switch for the headlights the first click which I'm pretty sure is supposed to be low beams, only the dash lights come on along with the tail lights. And then the next click the high beams come on. And when I try to use the turn signals or flashers they stay lit. On the dash they stay solid and the rear lights stay solid. So my problem is the turn signals staying solid with the headlights on and my low beam isn't working. Any ideas?

Hey, so i just picked up my first Comanche, its a 1987 4x4 2.5L 5 spd. sporTruck in red. It's a project to say the least, but I'm excited none the less. I'm pretty mechanically inclined and have all the tools and access to most of the machines to do most of what I need to, only major problems being: 1: Funds 2: Minor access to heated building to work on it in the frigid Illinois weather as my garage is not heated and my dads garage has two cars in the front heated garage and 3 cars in the heated shop in the back yard :fs1: he has more projects than me I think It has a few issues that i currently know of and I've been doing a ton of reading on here and everything is super super helpful, it cuts 75% of the diagnosis work out of it. Issues being: 1: 4x4 does not engage to front axle (believe its the stupid vacuum issue; Easy fix) 2: Brake lights do not work, and blinkers on the drivers side just light up the brake light on that side... (screams ground issue to me; Should be a relatively simple fix) 3: Intermittent knocking noise under cab on drivers side/center floor, sounds like maybe a trans/t-case mount may be loose or missing, happens at weird RPM's weather the vehicle is stopped or driving, haven't had a chance to get under it and check out where its originating from yet 4: No heat... maybe a heater core from what I can find... the blower motor is working, open to any help on this one 5: Previous owner said it gets death wobble, I have yet to verify that as I've only been to 45mph so far, but hey its a jeep what do you expect right? 6: Radio is inoperable HA who cares I just want to hear the roar of that beastly 2.5L screaming down the highway at 50mph, no but seriously that's the least of my worries as I have a history with car audio so it should be somewhat simple when I get around to it 7: Parking brake doesn't work, haven't looked much into this yet... can't be terrible 8: Speedometer is not working, not sure if the cable is busted or just detached or....? The truck currently runs, drives, and stops, and is not too bad in the rust department and my dad is a body-man so what rust that is there can be taken care of somewhat easily, so that's a plus... Clearly I couldn't pass it up for for $350 The booty-my first view of the truck The front and side view of her Taking her home! Yeah she runs but i had to drive 4 hours away to get it so definatly not going to drive it back :shake: Got her in the garage to check a few things out but had to move it out shortly after Interior is looking pretty good, needs a few window crank handles (got a free vice grip out of the deal :thumbsup:) This is where she sits now! The block heater makes all the difference in startups though wow! :yes: Yes I know the top is ugly :ack: but I'm probably going to leave it on for winter, the bed is pretty nice on the inside! ...and I will pull the carpets and fix the floors come spring time! Any suggestions, criticism, or help would be welcomed and appreciated!!!