ivantruckman Posted July 26, 2007 Share Posted July 26, 2007 i just purchased a 91 loyale, no start after sitting for 6 months, was running when parked.... checked for spark, good spark. heard no fuel pump, tapped on the fuel pump. than it worked..started Right up. ran it for a 1/4 mile stopped, now it has no spark , but it has fuel. i took every ground strap i could find and removed it and cleaned it real good, still no spark. is their any thing that sitting for a while could corrode and cause an intermittent no spark condition.? I'm confused Link to comment Share on other sites More sharing options...
ivantruckman Posted July 26, 2007 Author Share Posted July 26, 2007 if a right side timing belt brakes , will the engine sound diffrent when it cranks over, i was reading some old threds, hmmm? Link to comment Share on other sites More sharing options...
Gloyale Posted July 26, 2007 Share Posted July 26, 2007 if a right side timing belt brakes , will the engine sound diffrent when it cranks over, i was reading some old threds, hmmm? It will sound abit funny, often a hollow pumping sound, and spinning faster. But a right side belt(passenger side) won't cause a no spark. Indeed the car could actually run on the 2 drivers side cylinders, I've seen it. But a broken drivers side belt will leave a no spark condition. Easy to check, remove the cap and crank engine, watch the rotor, If it doesn't turn, broken belt. Link to comment Share on other sites More sharing options...
idosubaru Posted July 26, 2007 Share Posted July 26, 2007 have you checked for spark at each plug wire and then also out of the coil? check fusible links. pull and inspect, don't just look at them. could just need a tune up...plugs, wires, cap, rotor. when you pull the cap to see if the rotor turns you can check the condition of the cap and rotor contacts while you're in there. the coil or the FET (it's the little wired mechanism that is attached to the coil bracket) may need replaced as well. the FET is grounded through the bolt on the coil bracket holding it to the strut tower i beleive, make sure that's good. i've had two that sat for awhile, that baffled me for awhile (you can probably dig up the looooong, old threads), they needed the distributor replaced, the crank angle sensor resides in there. Link to comment Share on other sites More sharing options...
ivantruckman Posted July 26, 2007 Author Share Posted July 26, 2007 cool was trying to find the crank sensor. i have a manual to check the resistance of it, will try the ground first. thanks for the reply, I have no spark at the coil, still digging Link to comment Share on other sites More sharing options...
Cougar Posted July 26, 2007 Share Posted July 26, 2007 Follow Gloyale's advice. Check to see if the rotor is spinning in the disty. If that is ok then check to see if voltage is getting to the plus side of the coil. Also see if the horn works since it is on a critical ignition power circuit. If the horn doesn't work check fuse #5. Link to comment Share on other sites More sharing options...
Tom63050 Posted July 27, 2007 Share Posted July 27, 2007 cool was trying to find the crank sensor. i have a manual to check the resistance of it, will try the ground first. thanks for the reply, I have no spark at the coil, still digging Is it a stock coil? What's the mileage on the car? I've experienced intermittent spark failure from a variety of aftermarket coils. There are good ones though. Link to comment Share on other sites More sharing options...
ivantruckman Posted July 27, 2007 Author Share Posted July 27, 2007 145.000 miles, stock coil, rotor is spinning, fuse #5 is good,i can only get about 5 volts to the coil and battery ground Link to comment Share on other sites More sharing options...
idosubaru Posted July 27, 2007 Share Posted July 27, 2007 the FET on the coil bracket might be suspect, they will cause a no-spark condition when they fail. i do not know how to test them though, other than swapping in a good one. have you checked the fusible links yet? not the fuses, but the fusible links. they are located in a little black, rectangular box next to the battery. remove each one and inspect it. from memory i think it's the second one from the front in the row that would be suspect. i can't recall if the car would even turn over if that one fails, don't know if the starter is on that circuit. Link to comment Share on other sites More sharing options...
ivantruckman Posted July 27, 2007 Author Share Posted July 27, 2007 fusible links OK , i removed all of them and ohm'ed the out. headed to the bone yard for a used disty, "as our down under folks say", ill pick up a coil and all the junk under it, ill also replace the + and - batt cable, they tighten all the way , and still loose. cover all the easy stuff first, thanks again for the ideas. ill get her soon. this is my first 4x4, if it runs good, the next step is lift it up high... Link to comment Share on other sites More sharing options...
Cougar Posted July 27, 2007 Share Posted July 27, 2007 With only 5 volts getting to the coil I think you have found where the problem is coming from at least. I wouldn't bother replacing parts until you fix the voltage problem first. You may be replacing them needlessly. Did you measure the voltage at fuse #5 to see what the voltage is there? If it is low there also check the fusible links for a loose connection. If they are good then see if the ignition relay is ok. The problem is most likely with it. Link to comment Share on other sites More sharing options...
ivantruckman Posted July 28, 2007 Author Share Posted July 28, 2007 found problem, their are 4 wires going to the coil. one round barrel plug, and a smaller square one, the smaller square plug, that has two lug termanals , was severly corroded, causing a voltage drop during a load, in high humidity it was even worse ??. did a 3 hour search for any other corossion, replace all the fouled plugs, and boom it runs great. thanks to all for your sugestions Link to comment Share on other sites More sharing options...
Cougar Posted July 28, 2007 Share Posted July 28, 2007 Good deal. Glad you got it fixed, and thanks for the update. Link to comment Share on other sites More sharing options...
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