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Jeep Wrangler YJ
YJ General Discussion
95 YJ crank, no start
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<blockquote data-quote="Mike187" data-source="post: 440882" data-attributes="member: 21419"><p>Hi folks,</p><p> I have a 1995 Wrangler w a 2.5 liter Automatic. I've owned it for a couple years, did a few things when I bought it, but generally a great running car.</p><p>Recently had an issue, was driving and it died, cranks but won't start. Brought it into the shop, checked a few things.... wasn't getting fuel. checked the harness at the fuel pump, had voltage, still wouldn't start. Banged on the bottom of the tank, and it started. I figured great, needs a fuel pump.</p><p></p><p>Drove it for a few miles as the tank was full, figured I'd use some fuel and make the job easier. died again about a week later. no amount of banging got it running again. trailered it to the house, rolled into the shop, no love. checked a few things, and then it starts randomly.</p><p></p><p> I swap out the fuel pump, it starts and runs fine.</p><p></p><p>Next day, i leave the house and run some errands, it dies again. When it dies, there's no sputtering, it's literally like I shut the key off. It's now in my shop, still not starting. I've checked all fuses. I've swapped out the fuel pump relay with a known good one. It has spark. No fuel.</p><p></p><p>Does this sound like ECM? That's the way I'm leaning. Don't think it's crank sensor or a timing issue because it runs fine when it's not dead. Just consistently losing power to fuel pump.</p><p></p><p> I'm all ears for suggestions. Even charged the battery, as I had read that if battery was below 10 volts when cranking, ECM wouldn't work.... Nothing.</p><p></p><p>Next issue is, where is my best resource for an ECM? Any brand name that is more reliable than others? Is there a relatively easy way to test my ECM to confirm that it's the issue? Any way to bypass? I'm assuming that there's no way its as simple as me putting 12 volts to the fuel pump when I'm running it....</p><p></p><p>Thanks in advance for any suggestions..... can't stand intermittent issues... would be easier if the damn thing would just break for real, whatever it is.</p></blockquote><p></p>
[QUOTE="Mike187, post: 440882, member: 21419"] Hi folks, I have a 1995 Wrangler w a 2.5 liter Automatic. I've owned it for a couple years, did a few things when I bought it, but generally a great running car. Recently had an issue, was driving and it died, cranks but won't start. Brought it into the shop, checked a few things.... wasn't getting fuel. checked the harness at the fuel pump, had voltage, still wouldn't start. Banged on the bottom of the tank, and it started. I figured great, needs a fuel pump. Drove it for a few miles as the tank was full, figured I'd use some fuel and make the job easier. died again about a week later. no amount of banging got it running again. trailered it to the house, rolled into the shop, no love. checked a few things, and then it starts randomly. I swap out the fuel pump, it starts and runs fine. Next day, i leave the house and run some errands, it dies again. When it dies, there's no sputtering, it's literally like I shut the key off. It's now in my shop, still not starting. I've checked all fuses. I've swapped out the fuel pump relay with a known good one. It has spark. No fuel. Does this sound like ECM? That's the way I'm leaning. Don't think it's crank sensor or a timing issue because it runs fine when it's not dead. Just consistently losing power to fuel pump. I'm all ears for suggestions. Even charged the battery, as I had read that if battery was below 10 volts when cranking, ECM wouldn't work.... Nothing. Next issue is, where is my best resource for an ECM? Any brand name that is more reliable than others? Is there a relatively easy way to test my ECM to confirm that it's the issue? Any way to bypass? I'm assuming that there's no way its as simple as me putting 12 volts to the fuel pump when I'm running it.... Thanks in advance for any suggestions..... can't stand intermittent issues... would be easier if the damn thing would just break for real, whatever it is. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
95 YJ crank, no start
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