88minibitch Posted June 11, 2014 Share Posted June 11, 2014 hey guys I'm new to jeeps all together,, my dad gave me an 88 comanche and hes been lots of fun till now.. i was on my way to work when my clutch pedal sank,, turns out the clutch master cylinder went bad,, i changed it and refilled the lines only to have it gushing from the bottom.. it was running at this point!! had to change the slave cylinder,, after we put the tranny back together and connected everything in getting no juice!! the only thing electrical working now is the seatbelt lamp and buzzer.. i had the starter tested,, its good.. i took the fuse box apart and cleaned all the break fluid out of it and put it back together with new fuses.. is it possible it could be the starter relay?? when i hit the key it cranks,, I'm just not getting any fuel.. no head lights,, wipers,, tail lights,, radio,, signals,, hazzards.. everything electrical is out!! help a girl get this fixed.. :) Link to comment Share on other sites More sharing options...
88whitemanche Posted June 11, 2014 Share Posted June 11, 2014 Did you guys connect the cps? And as far as the lights someone else will chime in for you.... Edit: and if you already haven't done this...do cruisers renix tips http://comancheclub.com/topic/36382-cruisers-renix-tips/ Link to comment Share on other sites More sharing options...
88minibitch Posted June 11, 2014 Author Share Posted June 11, 2014 yeah i re-connected it,, but it doesnt bolt to the bell housing,, it just cliped in.. i just used a fuse light and i have a green light to all the parts that arent working.. the fuel pump is getting power and so are all the lights.. even double checked the fuse box.. did realize that when i mounted the tranny i have a flat ground mashed between the motor and tranny,, but i don't see where that would be a problem.. Link to comment Share on other sites More sharing options...
88whitemanche Posted June 11, 2014 Share Posted June 11, 2014 What year? What engine and transmission do you have? Link to comment Share on other sites More sharing options...
benjy_26 Posted June 12, 2014 Share Posted June 12, 2014 Wait, your CPS just clicked in? Don't seem right to me... Link to comment Share on other sites More sharing options...
tugalo Posted June 13, 2014 Share Posted June 13, 2014 The CPS should definitely bolt on solidly with special shoulder bolts. If you have power to all the fuses, it sounds like a ground problem to me. If power is available at the fuse, the circuit should work if it has a ground. Look under the dash in the vicinity of the emergency brake and you should see a ground wire bolted to the chassis. That is the ground for all the instrument panel. The flat braided ground wire should be bolted to the firewall about in the center of the engine bay. I replaced mine with a heavy gauge starter cable from O'reillys. Bad grounds are the most common problem in Comanches, along with the C101 connector. It might pay to separate the C101 and clean out all the tar, it's the big connector on the firewall just above and inboard of the clutch master cylinder. Link to comment Share on other sites More sharing options...
88minibitch Posted June 14, 2014 Author Share Posted June 14, 2014 I'm sorry it does bolt in,, there was so much gunk on them I couldn't see them.. I ordered a new cps and I'm going to put it on today.. as far as the ground,, I probably need to check the one under the dash because I may have damaged it when I was changing the master cylinder.. Tight spaces and big hands don't go together.. Lol Link to comment Share on other sites More sharing options...
88minibitch Posted June 14, 2014 Author Share Posted June 14, 2014 The CPS should definitely bolt on solidly with special shoulder bolts. If you have power to all the fuses, it sounds like a ground problem to me. If power is available at the fuse, the circuit should work if it has a ground. Look under the dash in the vicinity of the emergency brake and you should see a ground wire bolted to the chassis. That is the ground for all the instrument panel. The flat braided ground wire should be bolted to the firewall about in the center of the engine bay. I replaced mine with a heavy gauge starter cable from O'reillys. Bad grounds are the most common problem in Comanches, along with the C101 connector. It might pay to separate the C101 and clean out all the tar, it's the big connector on the firewall just above and inboard of the clutch master cylinder. Link to comment Share on other sites More sharing options...
88minibitch Posted June 14, 2014 Author Share Posted June 14, 2014 I cleaned the c101 when I cleaned the fuse box.. I just put the New cps on and I've still got the same problem,, no power!! I don't see a ground near the e.b. at all can I just run a new one?? If so just tell me how I like to learn.. Link to comment Share on other sites More sharing options...
tugalo Posted June 14, 2014 Share Posted June 14, 2014 The flat braided ground strap that you think is jammed between the tranny bell housing and block should be attached to the firewall directly above the rear end of the engine. That is the main ground for the entire truck. You can leave the flat cable where it is for now go to your local auto parts store and buy the heaviest battery cable they have roughly two feet long. if you find one that is for use on a boat, it will have flat ring connectors on each end. clean away all paint and grease from the firewall and bolt and attach the cable. The other end needs to be grounded to the engine block. the factory install was on a stud down by the bottom of the oil dipstick, but there are other places you can attach it. While you are at it, many of the sensor grounds are attached to the stud at the bottom of the dipstick, they get loose and dirty, so clean them up and re-attach firmly. Link to comment Share on other sites More sharing options...
64 Cheyenne Posted June 14, 2014 Share Posted June 14, 2014 I'd check the fuse links by the PDC, and or relays. Link to comment Share on other sites More sharing options...
Blue XJ Posted June 15, 2014 Share Posted June 15, 2014 Neutral safety switch on the trans mount unhooked? Or the clutch safety on the clutch pedal? Link to comment Share on other sites More sharing options...
88minibitch Posted June 16, 2014 Author Share Posted June 16, 2014 Link to comment Share on other sites More sharing options...
tugalo Posted June 18, 2014 Share Posted June 18, 2014 An additional ground from battery to radiator bracket is a good idea, but you should still put in a heavy cable from the engine block to the firewall. Will improve your starting times and the brightness of your headlights. Don't forget to clean the attach points really well....... Link to comment Share on other sites More sharing options...
benjy_26 Posted June 19, 2014 Share Posted June 19, 2014 I used #2 welding cable and soldered terminals to upgrade the block, head, and body ground on my MJ. BIG difference. There is a ground junction for all your front end lights in the harness that runs behind the header panel. I opened it up, took out the crimp, ran an additional 10ga wire from the battery negative to the splice point, soldered it all together, and covered it with heat shrink. Took care of a lot of issues that were popping up with my front end lighting. Link to comment Share on other sites More sharing options...
cruiser54 Posted June 19, 2014 Share Posted June 19, 2014 Post 1 in my link below, as suggested right off the bat. LOL. Link to comment Share on other sites More sharing options...
fupduk2 Posted December 30, 2014 Share Posted December 30, 2014 Three letters I will never forget....CPS. Yesterday I was neatening up some wiring for the start button. Started fine afterwards. Today went to start the truck and nothing. Only thing that worked was the key buzzer. After a couple of hours of trouble shooting and scratching my head, the wife came out and looked under the hood and said unplug that for 5 minutes and it will reset the CPS. The plug is located on the fire wall just above the fuel rail, well mine is. The wires in the plug are vio/wh and wh/blk to a red and white. I reset it and it fired right up. Have since put two on order. Link to comment Share on other sites More sharing options...
Eagle Posted December 31, 2014 Share Posted December 31, 2014 I cleaned the c101 when I cleaned the fuse box.. I just put the New cps on and I've still got the same problem,, no power!! I don't see a ground near the e.b. at all can I just run a new one?? If so just tell me how I like to learn.. SLOW DOWN! If it cranks, you OBVIOUSLY have power to the starter, so you don't have "no power." And if it cranks, you don't need a starter relay. Do you have fuel pressure at the fuel rail? have you checked? What pressure? Do you have spark? Do you have headlights and tail lights? DON'T just start throwing parts at it -- you'll go broke. Diagnose the problem one step at a time. Link to comment Share on other sites More sharing options...
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