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Post Info TOPIC: my fox hesitated when taking off (help)


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my fox hesitated when taking off (help)


hi guys i have a 1990 mustang 5.0 and its my fathers and the guy we bought it from said he play with the timing so is at 14 but i drive the car and if i rev it to shift it hesitated and looses power and a small explosion comes out and power comes back can anybody tell me whats that i dont now much about mustang but i want to fix the problem can anybody help thanks.

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If your timing is at 14 you should probably run 93 octane in the tank. It sounds like your experiencing detonation.

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yeah thats what im running now though

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Take a spark plug out and see how it looks, also check your wires. Its probably something to do with the ignition/spark system. Also, make sure all of your fuel injector wiring plugs arent loose.

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one simple thing that bothered me and caused this to happen with me was a dirty Mass Air meter... I know it sounds too simple to be the culprit, but worth a shot and its cheap and easy

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brrraaaaaaaaaaap


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boostd710 wrote:

one simple thing that bothered me and caused this to happen with me was a dirty Mass Air meter... I know it sounds too simple to be the culprit, but worth a shot and its cheap and easy






X2 a dirty mass air can cause your air fuel ratio to get all out of whack and send shitty signals to the computer. If you clean it, disconnect your negative battery terminal (so you computer can reset itself) then use mass air sensor cleaner, or electrical parts cleaner inside the mass air flow sensor focusing on the the prongs. Then let it chill for 15 mins to give your computer the time to reset. It will take a little driving to make the computer re-learn, but you should notice a difference.

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BECAREFUL cleaning the mass air too... Super easy to break so be gental...

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brrraaaaaaaaaaap


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thanks, buddy i heard about that before

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hey jay what do i used to clean it

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thanks matt im going to try that today

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It might have nothing to do with you but my timing is at 14 too and I used to run 93. When I went wot sometimes it sputtered and my check engine light would apear and disapear. Now I"m running 89 just to see and it runs perfect now and no pinging or knocking. Idk why but I don't think my car likes 93.

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92 Lx 5speed
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