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Location of engine computer

(1990 Ford F-150)
in North Providence, RI on October 16, 2010
the check engine light comes on when start the truck, it stays on and the engine revs high, and when driving the truck in drive when you push the pedal down to the floor the engine revs up and the truck doesnt go any faster, like the transmission is blown, but its not because as soon as the check engine light goes off in drive, the truck drives perfect and its fine, reguarly rev, and pick up speed perfect. my mechanic thinks its the computer. where is it located in the truck, i need the numbers off it ??
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Popular Answer
What is the code or codes stored? Test those circuits first. ECU The ECU is either at the driver's side rear of the engine compartment or driver's side front of the dash. There is a service bulletin 91-2-13 that may be your problem.
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