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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

help just rebuilt 351w

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Old Aug 10, 2013 | 07:32 PM
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Question help just rebuilt 351w

hey guys just need some input rebuilt 94 f150 351w bored 40 rhs heads comp 262h cam just got it running with stock ecm runs rough but idles wont idle in drive though do yall think its the map ecm, im planning on taking it to the dyno get a chip burned for it at speedtek or have em replace it with the maf computer i got at the wrecking yard off a 94 f150. also the oil pressure gauge has never worked on this truck and i replaced the sensor and still doesnt work i primed it with a drill and it worked fine do yall think its just the wiring maybe or what do i look for if its a bad pump?
 
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Old Aug 10, 2013 | 09:25 PM
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That cam is not compatible with the stock PCM in that truck so you need MAF and a tune.
 
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Old Aug 11, 2013 | 09:07 AM
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that's the plan but i have to wait two weeks before its scheduled at the dyno for the computer swap and tune just making sure that the computer is the problem and not something like over tightened valves.
 
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Old Aug 11, 2013 | 09:22 AM
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Do you have larger injectors in it?
You are aware a MAF conversion is more than just a computer swap there are wiring harness additions as well.
 
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Old Aug 11, 2013 | 10:49 AM
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MAF sensor, wiring for said sensor, all new intake system to use said sensor, sequential injector harness, and EEC swap. All of which require the EEC connector to be re-pinned. Lot more than swapping the computer out. If only it were that easy...
 
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Old Aug 11, 2013 | 05:13 PM
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Ya I Got all the stuff off the donor truck all wires sensors computer everything I need for the swap gonna let the guys at the shop swap it out and tune it just to be sure I don't screw up my brand new engine.
 
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