shawn Posted August 25, 2014 Share Posted August 25, 2014 then runs again and does the same thing. sometimes starts again right away and sometimes not for a while. - its my grey '86 2.5 5 spd. it ran fine when i parked it a year and a bit ago. went to start it a couple months ago and it would not turn over. after changing the solenoid on the inner fender and one of the relays it started right up but now it is plagued with this dying issue. I'm trying to pass it on to its new owner and a new member here. when he went to drive it home this suddenly started happening and we're both baffled as to what would cause this. it has gas in it , but now that i think about it the battery is known to be bad and won't hold a charge ( if that could have anything to do with it) any and all help so greatly appreciated. :) Link to comment Share on other sites More sharing options...
yxmj Posted August 25, 2014 Share Posted August 25, 2014 Check cruisers tips......probley CPS Link to comment Share on other sites More sharing options...
Jeep Driver Posted August 25, 2014 Share Posted August 25, 2014 It's an 86, is it carbed or TBI? Link to comment Share on other sites More sharing options...
shawn Posted August 25, 2014 Author Share Posted August 25, 2014 throttle-body. also, when it died, the jumper cables were still hooked up from my other truck. Link to comment Share on other sites More sharing options...
SpaghettiBatman Posted August 25, 2014 Share Posted August 25, 2014 Hey guys, I'm the buyer. I'm looking for cps but keeps directing me to something about child nutrition and that can't be it. If you would be so kind as to tell me what it stands for that would be swell! Link to comment Share on other sites More sharing options...
shawn Posted August 25, 2014 Author Share Posted August 25, 2014 crank shaft positioning sensor. https://www.google.ca/webhp?sourceid=chrome-instant&rlz=1C1GGGE_enCA356&ion=1&espv=2&ie=UTF-8#q=crankshaft%20positioning%20sensor%20jeep%20cherokee Link to comment Share on other sites More sharing options...
HOrnbrod Posted August 25, 2014 Share Posted August 25, 2014 Crankshaft Position Sensor. Link to comment Share on other sites More sharing options...
SpaghettiBatman Posted August 25, 2014 Share Posted August 25, 2014 thanks Link to comment Share on other sites More sharing options...
yxmj Posted August 25, 2014 Share Posted August 25, 2014 It's located on the drivers side of the bell housing......you should be able to see it from the top......but you will have to access it from the bottom. Link to comment Share on other sites More sharing options...
cruiser54 Posted August 25, 2014 Share Posted August 25, 2014 There's some photos of it in my Tech Photos link below. Is there a ground strap from the back of the head to the firewall? If so, remove the end from the firewall, clean the connector, scrape the paint off the firewall, and reattach. The CPS can be TESTED. Post 7 in my Tips link below. Link to comment Share on other sites More sharing options...
shawn Posted August 27, 2014 Author Share Posted August 27, 2014 well i threw a new cps in and did the grind and cleanup on the firewall ground. put in a good battery now it's back to no-start, just cranks. gonna check spark asap. any chime-in appreciated. there also seems to be a short happening somewhere around the starter motor, although it still cranks fine there have been wisps of smoke ( and thats just on relatively short cranking, like a bout 5 seconds or so ). Link to comment Share on other sites More sharing options...
shawn Posted August 29, 2014 Author Share Posted August 29, 2014 so we've not had a chance to see if there's spark yet. hoping that will take place tomorrow. I'm now thinking that if there is spark that would indicate the ecu ( or at least the connections there-of and / or corrosion from sittting for that 1.25 yrs). if there isn't a good spark my limited knowledge would lead me to think coil or some ignition-related thingamagig? Link to comment Share on other sites More sharing options...
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