can anybody help? my 97 cobra acts as if it has a revlimiter at 4g. It will backfire and sputter. This is the car that member 1stcobra lost to the bank. Anyway i have been trying to fix his mess eversince i bought it from the bank. Everything he claimed that had been done has turned out to be a lie. Also does anybody have a wiring diagram for the engine. Whats the wirers running between the 2 coils with the gray plug for.
97 cobra missfire at 4000 rpm
- Thread starter newtoy
- Start date
Install new plugs (Autolite 764's), wires (Ford racing 9mm), and fuel filter (motorcraft).
Is your check engine light on?
Is your check engine light on?
97 cobra missfires at 4000 rpm
my plugs have only 1200 miles on them and i put new wires (ford racing) on a month ago. I did forget to mention that this motor has 11 to 1 comp. last owners doing not mine. no check engine light. could it be a bad mass air flow (old pro-m 80 from best product inc.) callibrated for 36lb injectors. I just got a stock maf and 24lb inj but havent got them in yet.
my plugs have only 1200 miles on them and i put new wires (ford racing) on a month ago. I did forget to mention that this motor has 11 to 1 comp. last owners doing not mine. no check engine light. could it be a bad mass air flow (old pro-m 80 from best product inc.) callibrated for 36lb injectors. I just got a stock maf and 24lb inj but havent got them in yet.
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Well the increased compression should be covered by a custom tune as your timing will need to be set appropriately.
What did you gap your plugs at? 0.54 is what you should be using.
Replace fuel filter.
mine did that when the fuel pump was going bad.
Toasty, I'm sure you know and that it was a typo, but just for clarification, gap at .054.
I don't even know how you could gap them at over half an inch, but someone might try....:lol1:
Coil packs could be on the way out, but it almost sounds like a fuel/metering issue if it just peaks at 4k.
think that i should install the stock maf and 24lb injectors? checked the fuel filter its ok. The car has a aftermarket fuel pump and relay on it. can anybody tell me what the wire loum between the to coil packs is for. It has a large gray plug that has removable end with wires that jump the wires back into themselves The diagram i got from ford does'nt show this
Just had this problem
it was the Intake Air Temp Sensor right behind the maf on the tubing into the thottle body
so...
goto autozone 9.99 and win
it was the Intake Air Temp Sensor right behind the maf on the tubing into the thottle body
so...
goto autozone 9.99 and win
Replaced this sensor ($23.86) today made no change, still have the same problem. Going to put new plugs in next (autolite 764's ,0.054 gap). After that I am going to replace the pro-m 80, maf (cal.36lb) and the 36lb injectors with stock 97 parts.
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