Frustrated in Northern Michigan

Johns89blu

Member
Aug 8, 2021
45
2
18
Michigan
New to this forum, hello from the great lakes,I? have a conundrum, bought a 1989 supposed gt but it has a regular maf 302 in it replaced upper and lower intake gaskets,injectors, ignition module, coil,ignition switch, put a cold air on it,new fuel pump,wires cap rotor plugs, I had it wired the h.o way ran real rough, realizing the throttle body was on drivers side made me wonder if it wasn't a h.o so I wired the plug wires for non h.o it started right up and purred till I turned it off the the issues came it starts up and dies within a couple seconds every time so I thought timing chain replaced that to no avail still same thing starts then quits, could it be a bad e.c.u?I'm baffled any help would be a God send ty in advance
 
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Check the catch code on the computer for clues as to what vehicle the engine came out of.

If I were to guess, it sounds like it was perhaps a 4-cylinder that was swapped to a V8 with a complete harness swap out of a 1986-1991 Crown Vic/Grand Marquis.

Post up some pictures of what you have.
 
Check the catch code on the computer for clues as to what vehicle the engine came out of.

If I were to guess, it sounds like it was perhaps a 4-cylinder that was swapped to a V8 with a complete harness swap out of a 1986-1991 Crown Vic/Grand Marquis.

Post up some pictures of what you have.
 

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Definitely looks like a 5.0 straight out of a Crown Vic that's missing the passenger side accessory brackets. Remove that intake tube and take a look at the throttle body. The Crown Vic/Grand Marquis came with a much smaller throttle body than even the Mustangs had.
 
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Any idea on motor from these casting numbers???
 

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Check VIN.

Digits 5,6 and 7 will tell you what body style the chassis was born as. It will start with a P4x. Factory GT hatch will be P42.

Digit 8 is engine code. A will be 4 cyl, E will be V8.

For a Foxbody, alternator is on wrong side and intake facing wrong way. Battery has been moved to passenger side too. I would agree with above and likely a Crown Vic engine.

Does look like you have a V8 tach/cluster (4 cyl only goes to 6k).
 
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Check VIN.

Digits 5,6 and 7 will tell you what body style the chassis was born as. It will start with a P4x. Factory GT hatch will be P42.

Digit 8 is engine code. A will be 4 cyl, E will be V8.

For a Foxbody, alternator is on wrong side and intake facing wrong way. Battery has been moved to passenger side too. I would agree with above and likely a Crown Vic engine.

Does look like you have a V8 tach/cluster (4 cyl only goes to 6k).
It's a p42 so it's a factory gt hatch, just everything else is cobbled