88whitemanche Posted July 21, 2014 Posted July 21, 2014 Hey guys So today I've been having issues with driving at 70mph and the trucks completely shuts off, then cuts back on.... First reaction when I get home check grounds...everything is clean and tight...then just so happens I go to the relay strip and one relay was soooo hot as soon as I pulled it I had to drop it because it almost burnt my fingers.... Has this happened to anyone? Edit: it was the fuel pump relay....any Input would help thanks
yxmj Posted July 21, 2014 Posted July 21, 2014 Simple test would be change it out with a known good relay......most auto relays have te same pin out....just make sure it can handle the current
Jargon Posted July 21, 2014 Posted July 21, 2014 I don't really have input, but if you find that another relay fixes the issue, please let us know. My guess is that the hot relay is just another symptome...
88whitemanche Posted July 22, 2014 Author Posted July 22, 2014 I just swapped relays and so far no shutting off.... But I haven't done any long distance driving.... This morning just getting to the corner the truck wanted to shut off a few times.... I'm going to do some driving around now and well see how it goes
Jargon Posted July 22, 2014 Posted July 22, 2014 The question is: does the new (swapped) relay also get super hot?
88whitemanche Posted July 22, 2014 Author Posted July 22, 2014 Last night I did a lot of city driving and no problems at all...this morning it would shut off cut back on...3 to 4 times...looks like I have another issue other than a relay.... Yes it does get hot..... Still having the same issues....
Jeep Driver Posted July 22, 2014 Posted July 22, 2014 I would check your wiring to the pump....may be grounding out. Or your pump is on it's way out.
88whitemanche Posted July 22, 2014 Author Posted July 22, 2014 I would check your wiring to the pump....may be grounding out. Or your pump is on it's way out. Crap that sucks if it's going out.... Only had the pump for 3 years....
Jeep Driver Posted July 22, 2014 Posted July 22, 2014 I would check your wiring to the pump....may be grounding out. Or your pump is on it's way out. Crap that sucks if it's going out.... Only had the pump for 3 years.... Airtex?
88whitemanche Posted July 22, 2014 Author Posted July 22, 2014 Delphi pump.... Edit: correction denso pump....
yxmj Posted July 22, 2014 Posted July 22, 2014 I would check your wiring to the pump....may be grounding out. Or your pump is on it's way out. Take a minute and check this.....just had a simaler problem with the Daughters XJ......was a broken wire....if yours is shorting or grounding out it would account for the heat.....and the hesitation.... :dunno:
87MJTIM Posted July 22, 2014 Posted July 22, 2014 Did you have a complete loss of all electric and power - everything shuts off, then comes back on? If so, the CPS may be going bad. 1st hand experience.
88whitemanche Posted July 22, 2014 Author Posted July 22, 2014 Did you have a complete loss of all electric and power - everything shuts off, then comes back on? If so, the CPS may be going bad. 1st hand experience. Well this morning it was more bucking than shutting off.... But all lights and radio were still on while it was happening.... Yesterday at 70mph I couldn't tell you if all electronics were on because it was broad daylight and I had my radio off I was cruising down the hwy and I felt the truck like a sudden loss. I look down at the rpm gauge and it was at 0 rpm. then as soon as I looked around to make sure I don't crash or hurt myself it cuts back on and cruises like if nothing ever happened....this happened twice riding home
yxmj Posted July 22, 2014 Posted July 22, 2014 Again checkh your wiring....it sounds the same as the XJ.....power lost to feul pump= stall
88whitemanche Posted July 22, 2014 Author Posted July 22, 2014 Ok so after work before even starting the truck...I rechecked the rear tail light ground to see if it was loose or anything...check Checked the wires at the fuel sending unit... Cleaned and checked for crimps or splices and everything plays out fine....check What I did notice is that by pulling the fuel pump relay I felt it too easy to pull put of its slot so I bend the constants points a little on all the relays and decided to drive back home.... Drove home with ease...but I did do a lot of shifting and moving around.... It's really has happened driving at high speeds or within a few minutes from start up..... Anybody else any other clues?
88whitemanche Posted July 28, 2014 Author Posted July 28, 2014 So far looking into the truck found the dizzy cap and rotor in bad shape.... Cap had some goo in it...idk how but I clean it and it made my idle get rough so I'm going to replace that and see what goes on after that....
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