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no start after changing computer and wiring harness

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Old 05-15-2008, 11:35 AM
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88ttopstang
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Default no start after changing computer and wiring harness

my car was sd but i bought a computer and wireing hraness out of a 91 5.0 and i hooked everthing up and have no spark or fuel any ideas
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Old 05-15-2008, 01:28 PM
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Default RE: no start after changing computer and wiring harness

any help
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Old 05-15-2008, 02:20 PM
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Pony 5.0
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Default RE: no start after changing computer and wiring harness

Are you sure the computer was good? I would start looking for loose or missing grounds.
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Old 05-15-2008, 03:58 PM
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88ttopstang
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Default RE: no start after changing computer and wiring harness

well the computer is good i found out what it is i just dont know how to fix it on the diver side there is 2 plugs one plugs in off the new wireing harness and the thothe i dont event have a plug for it so i was messin with it and jumped some wires and got the car to start any ideas need help
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Old 05-16-2008, 05:53 AM
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dave1170
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Default RE: no start after changing computer and wiring harness

The new harness you put in probably has just one brown plug correct? The harness coming out of the drivers side firewall has a black and grey plug right? If this is the case you need to get a dash harness out of a 91-93 5.0, it will have just the one brown plug and you should be all set.
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Old 05-16-2008, 01:00 PM
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88ttopstang
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Default RE: no start after changing computer and wiring harness

yea it dose if i use the mass air computer and the sd wiring harness and take out the wiring for the mass air meter and wire it up would that work if so how would i do it cause i know that is what u do withthe mass air conversion kits that u buy
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Old 05-16-2008, 01:30 PM
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Default RE: no start after changing computer and wiring harness

I'm not sure on that one, i've never done a sd to maf swap. Sorry.
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Old 05-16-2008, 01:35 PM
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Default RE: no start after changing computer and wiring harness

ok kool thanks man
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Old 05-16-2008, 04:41 PM
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Default RE: no start after changing computer and wiring harness

somebody help please
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Old 05-16-2008, 09:28 PM
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Default RE: no start after changing computer and wiring harness

i got it if any1 wants to do a mass air swap cheap mine cost me 80 bucks

http://www.corral.net/tech/powerplant/maf_tech_2.html

http://www.stangnet.com/tech/maf/massairconversion.html

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