car turning over but not starting after changing a rear tire, coincidence???
HI guys, I had driven my 99 grand marquis all day to and from work. I notice I was getting a wobble so I got home and put my spare tire on back drivers side, as this is the tire I thought was causing the wobble. Get it changed and go to start the car to take for a test drive and the damn thing turns over and sounds like usual but just wont start. Any help would be greatly appreciated, thx
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check the inertia switch for the fuel pump. It should be in the trunk, attached to the driver's side hinge. Push the button on top. If it clicks, that means it was tripped and you reset it. If nothing, that ain't it.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 rousers -
yeah i checked that, it was already depressed. I put my hand on fuel relay and felt it come on. I listened for the fuel pump coming on with my ear up to the gas cap, could hear it. So yeah, I'm at a loss hereOriginally posted by gadget73 View PostComment
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If the fuel pump kicks on, its likely to be a spark issue, unless its just sitting on an empty tank or the fuel pump has managed to die in a strange way that lets it run but not actually make pressure. The usual for no spark on these is a bad connection at the crank position sensor, or a dead CPS. It lives on the front of the motor, passenger side, up by the AC compressor.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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or the fuel filter caught something and is clogged up.
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 gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
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so put a new fuel pump in it cause pressure only reading like 2. Try to start it and still doesn't start. Fuel pressure still reading low as hell. Can feel and hear the fuel pump relay working, fuses all good. Multimeter says have power everywhere but when check power at the fuel pump it only reads like 6.2 or some shit????? Anyone have any ideas??Comment
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check for voltage drop across the inertia switch maybe? if it failed internally in some way it may have gone high resistance. Check the ground too, not sure where it is but a sketchy ground will do the same thing.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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the inertia switch was reading 6.7 as well. Check what ground?Originally posted by gadget73 View PostComment
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If you get 6.7v from a ground to the inertia switch, then its not the ground on the fuel pump. I was thinking that if the fuel pump connector read 6.7v across it's two pins, it might be a problem on the ground side of that plug. I'm guessing you were reading from inertia switch to some ground point that was not the fuel pump's ground connection, so that rules that out.
Check the voltage up front at the fuel pump relay. It should have 12v on both sides with it engaged. If the relay is shitty, you'll see a difference across it. If you get good voltage there, the problem has to be between the relay and the inertia switch. I believe there is a connector down in the fender area, by the ECM and all that stuff where the fuel pump circuit's power feeds through. If that connector is crappy, that may be it. If the voltage is low into the fuel pump relay, it will have to be a problem between the fuse box and relay. The fuses do sometimes get crusty in that box since it isn't particularly well sealed.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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I recently had to reseat the fuel pump relay in my 93. I had a little much dielectric grease in it and it was becoming insulator grease. Little contact cleaner to hose off some of it and put it back down and felt the pins grab a little better in the socket and all was good.
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 gadget73
... and it should all work like magic and unicorns and stuff.
Originally posted by dmccaig
Overhead, some poor bastards are flying in airplanes.Comment
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