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Old 09-10-2007, 02:50 PM
plankofwood64 plankofwood64 is offline
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Engine swap snafu

I'm new to this site. This is my first post.

I bought a 1998 f-150 with a blown 4.2. I bought a remanufactured 4.2, put it in, etc...

this is my problem - when I connect the battery the interior components; radio, idiot lights, fan, horn, all work but the engine won't crank. I'm trying to prime the oil pump but can't. I blow a 25 amp fuse (the one located under the hood) whenever I connect the positive cable to the battery.

I took my multimeter, set it to "tone", and touched the negative to the negative post of the battery (with the cable connected) and the positive to the positive cable, (NOT on the battery) and I got a tone. So somewhere I have a positive grounding out to something.

Have anyone experienced this? Am I overlooking something obvious with my connections?

Any help would be greatly appreciated.

Thank you

Eric
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Old 09-10-2007, 10:07 PM
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dragogt dragogt is offline
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why did the engine blow? where did you get the truck, friend, auction, E-bay?

how's the cable going to the starter?
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If you can't tell if you have a body lift or not maybe you shouldn't be giving people advice in the offroad forum????
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Old 09-11-2007, 06:03 AM
plankofwood64 plankofwood64 is offline
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It used to be a Haz Mat fleet vehicle out of North Carolina. I bought it from a friend whose son-in-law works for Haz mat.

The exact reason why the motor blew is beyond me, but it did throw a rod through the oil pan. (a hole the size of your index finger)

I bought a remanufactered engine, (long block) from Green Leaf Motors out of Monroe Georgia.

It's wired to the starter like so: ground from the battery to the ground bolt on the starter, positive hooked up to it's post on the selenoid. When I connect the cables to the battery it blows a 25amp fuse that's located on the right side of the engine bay in the fuse box located there.

I've got a Haynes repair manual, Chiltons FYI online manual, and the starter is hooked up per their instructions.

I'm at a lost here. Any ideas? Perhaps there's a chasis ground I'm missing? I know theres a ground wire connected to the frame by the right front tire that goes to the starter. Any others? There's also a ground wire connected to the back of the engine bays wall, (just above left of the intake), grounded to the wall) that I have no idea where it goes. Any more?

Last edited by plankofwood64; 09-11-2007 at 06:12 AM.
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Old 09-11-2007, 08:31 AM
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dragogt dragogt is offline
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I'm not familiar with those trucks, but you might try posting in the 1997 -2003 forum,
got some pretty smart guys there, should be able to get you fixed up.

I just thew out the starter as a w-t-h.

good luck
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Quote:
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If you can't tell if you have a body lift or not maybe you shouldn't be giving people advice in the offroad forum????
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Old 09-11-2007, 02:54 PM
plankofwood64 plankofwood64 is offline
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for reasons I can't explain........ It cranked.


Now what's the procedure for priming the oil pump?

Any reply is greatly appreciated
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Old 09-12-2007, 10:39 AM
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disable coil, and fuel --- (unplug the coil, trip the fuel pump safety switch) and spin Until you get pressure

then, don't forget to reconnect you coil and reset the fuel pump. and you should be good to go

have fun
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Quote:
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If you can't tell if you have a body lift or not maybe you shouldn't be giving people advice in the offroad forum????
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Old 09-12-2007, 01:43 PM
plankofwood64 plankofwood64 is offline
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Thank you!


It worked like a charm. Now all I have to do is connect the vacuum lines to their correct location and I'm golden.

Again, some help on this woulkd be greatly appreciated. I have the schematic from Chilton's DIY online manual, but it's all greek to me.

Anyone have photos or some other means to help a novice along?

Thank you.

Eric
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Old 09-12-2007, 03:21 PM
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congrats bubba,

sorry, but i don't have any info on those truck's.

have you asked the guys in the 1997- 2004 forum, they should have every thing you need to hook up your vacuum lines
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87 Ranger TBD

Quote:
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If you can't tell if you have a body lift or not maybe you shouldn't be giving people advice in the offroad forum????
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Old 09-12-2007, 03:21 PM
 
 
 
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