Had time to get around to it today. Ruled out the inertia switch and I’m gonna get a relay tomorrow. If that doesn’t go well then I’ll get the pump. Also a change has occurred, I heard the usual whine about 2 weeks ago with it, now there is just a subtle hum. And I tapped a hole where the previous fuel rail bolt was and installed a new bolt.
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Ruled out the fuel pump relay. Before I drop the pump is there anything else I should consider?Attached FilesComment
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you confirmed you have battery voltage on both sides of the inertia cutout for ~2 seconds when turning the key ? If so there isn't much else besides the pump or the connector to it. Have to drop the tank to get to both though.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousersComment
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Yeah I checked that. I l’ll have to siphon out my gas or something cause the tank was full when it stopped running. I’ll get back to you after I’ve done it.Comment
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dropped the tank and put in a new pump with new gas. Also plugged back in the SPOUT connector after timing again since I never plugged it up after I took it out. Tried to start and got a few sputters, then I put some carb spray and it ran but it stalled like no tomorrow I’ve never heard it run like that. Tried to run it again but without carb spray and nothing. Timing is right at 12 degrees BTDC too. And it didn’t cut off when it stalled this time it stayed on. I pressed the pedal a few times to see if the rpms would go higher and it did, unlike last time I tried it when it ran. Don’t know what was different. 2 things I already have in my head that may be the issue is probably the ECT sensor, maybe fuel filter, or the ignition switch.Comment
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Just commenting again so this can get some attention. Gonna grab a new ignition switch regardless though.Comment
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Changed them both out, still intermittent start. Seems I always have spark and now I always have fuel. Still can’t find the issue.Comment
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if its got spark and fuel it will run. If its not running you're missing one or the other. Do you have injector pulse? Fuel pressure is half of it but if the injectors are not firing or not working, you have no fuel. Starting fluid will tell you, don't need gasoline to run it on go-go juice. That will confirm spark and compression though.86 Lincoln Town Car (Galactica).
5.0 HO, CompCams XE258,Scorpion 1.72 roller rockers, 3.55 K code rear, tow package, BHPerformance ported E7 heads, Tmoss Explorer intake, 65mm throttle body, Hedman 1 5/8" headers, 2.5" dual exhaust, ASP underdrive pulley
91 Lincoln Mark VII LSC grandpa spec white and cranberry
1984 Lincoln Continental TurboDiesel - rolls coal
Originally posted by phayzer5
I drive a Lincoln. I can't be bothered to shift like the peasants and rabble rousersComment
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Forgot to mention that it started again 2 days later but with no starting fluid. Asked someone else their thoughts and they thought ECM issues. I have a spare relay that I’ll put in the ECM relay spot and checked the grounds that go to the ECM as well. And I don’t know if I mentioned it but the EEC IV self test isn’t working anymore either. I’m gonna open up this ECM I got now.Originally posted by gadget73 View Post
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If the diag isn't working, there's a good chance the CPU is having issues or the pins to it are damaged. The CPU in the ECM controls the blinking of the output. I had that problem with the HO swapped Mark VI, but other than diag, everything worked. Swapped in another ECM anyhow just for sanity sake. No change in running behavior, but I had a working diag port then.
Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. -- Albert Einstein
rides: 93 Crown Vic LX (The Red Velvet Cake), 2000 Crown Vic base model (Sandy), 2003 Expedition (the vacation beast)
Originally posted by gadget73Originally posted by dmccaigComment
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Found the main issue, it was a weak fuel pump combined with a vacuum leak. I’m still searching for the leak right now but i plugged up the brake booster line and it cranks every time now before dying after a few mins. I sprayed around and nothing really changed so I’m suspecting it’s just a vacuum hose under the intake so I’ll probably just replace them allOriginally posted by gadget73 View PostComment
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