This is topic 93 gt need help in forum Tech Talk at Northern California Ford Owners .
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Posted by 93 5.0 (Member # 12418) on
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What up a have a 93 mustang gt and for a month or so now I've been have a sputter between 2-3000 rpm I've Put a new dizzy,cap,rotor,plugs,wires,fuel pump,filter and reg and new injectors new yellow top battery and alt and mass air and tps and tryed an diff ecu and it still does it any ideas
Posted by Martinna (Member # 12493) on
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Welcome. Do you have a vacuum leak? Spray carb cleaner around the vacuum lines and if there is a leak, the RPMs will jump up as the engine burns the carb cleaner. Throwing parts at the problem is a slow, expensive way to fix problems. Pull the codes from the computer and do an injector balance test.
http://www.youtube.com/watch?v=jVjvgnLUBzE
http://www.corral.net/tech/maintenance/eecivtest-balance.html
Post your results and we'll take it from there.
Posted by 93 5.0 (Member # 12418) on
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I've done the codes and all I'm getting is egr that's cuz I have gt40p heads and don't have and of the vac lines hook up and they been off for 3 years now but I don't have and vac leaks I did a spray carb cleaner and nothing happened it started about two months ago after I change out my transmission
Posted by Martinna (Member # 12493) on
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This is tricky. Do you still get the sputter when the gas pedal is floored? How violent is the sputter?
Posted by 93 5.0 (Member # 12418) on
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If you look on the alternator on the d plug there a green wire if I unplug it no more sputter but my battery won't charge and it's only from 2000-3000 rpm if I get on it it backfires around those rpms and if I just go ez you can feel it more
Posted by Martinna (Member # 12493) on
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Is it the Green/Red wire shown in the bottom left of this diagram?----- http://www.veryuseful.com/mustang/tech/engine/images/fuel-alt-links-ign-ac.gif If it is not, which wire in the diagram is it?
Posted by 93 5.0 (Member # 12418) on
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Yes that one I've tried a diff cluster and it still did the same I'm like stuck on it
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