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I currently have my Montego with an auto electrician but he's struggling to find the time to work on it and wants me to collect it before he gets too involved.
Its all very frustrating, so was wondered if anyone on here could possibly give me some steer? Here's a summary of where I am at:
The car has a ballast resistor under the coil but when this is wired correctly, (two wires) it runs very poorly and will not rev. You cannot also hear the fuel pump prime.
With the fuel Fast Check connected in this correct set-up, the following lights do not come on - injectors, coolant and air flow meter. Both throttle pot lights are on, so suggest this is set-up correctly.
Currently the only way to get it running reasonably well is to bypass the resistor and run the wire straight to the coil. This then makes the fuel pump prime constantly.
The car will start from cold but needs some revs to prevent it stalling as it ticks over at 400rpm and slowly increases to about 1000rpm when hot.
I believe if all is correct, the fuel pump should prime for 2-3 secs and the car start without throttle to 1100rpm and dial down to about 700rpm when hot. Its never though done this in the three years I have owned the car.
Car did over 400 miles last weekend to Gaydon and passed an MOT on emissions with CO at 3.32% (max 3.50) and HC at 283 ppm (max 1200)
Basically the car runs OK when warm but feels like its lacking some initial pick-up, suggesting either a weak spark or low fuel pressure?
Work completed and parts replaced:
All breather hoses
Head gasket
Manifold gasket
Stepper motor
Coolant temp sender
Ballast resistor
Fuel and main relays
Fuel injectors professionally cleaned and flow tested
Full service including spark plugs and fuel filter
Uprated fuel pressure regulator (refitted the standard one as it doesn't seem to make a difference)
Can anyone offer any more advice based on this description or at least what I should be asking an auto electrician or mechanic to check. Any help is really appreciated.
Its all very frustrating, so was wondered if anyone on here could possibly give me some steer? Here's a summary of where I am at:
The car has a ballast resistor under the coil but when this is wired correctly, (two wires) it runs very poorly and will not rev. You cannot also hear the fuel pump prime.
With the fuel Fast Check connected in this correct set-up, the following lights do not come on - injectors, coolant and air flow meter. Both throttle pot lights are on, so suggest this is set-up correctly.
Currently the only way to get it running reasonably well is to bypass the resistor and run the wire straight to the coil. This then makes the fuel pump prime constantly.
The car will start from cold but needs some revs to prevent it stalling as it ticks over at 400rpm and slowly increases to about 1000rpm when hot.
I believe if all is correct, the fuel pump should prime for 2-3 secs and the car start without throttle to 1100rpm and dial down to about 700rpm when hot. Its never though done this in the three years I have owned the car.
Car did over 400 miles last weekend to Gaydon and passed an MOT on emissions with CO at 3.32% (max 3.50) and HC at 283 ppm (max 1200)
Basically the car runs OK when warm but feels like its lacking some initial pick-up, suggesting either a weak spark or low fuel pressure?
Work completed and parts replaced:
All breather hoses
Head gasket
Manifold gasket
Stepper motor
Coolant temp sender
Ballast resistor
Fuel and main relays
Fuel injectors professionally cleaned and flow tested
Full service including spark plugs and fuel filter
Uprated fuel pressure regulator (refitted the standard one as it doesn't seem to make a difference)
Can anyone offer any more advice based on this description or at least what I should be asking an auto electrician or mechanic to check. Any help is really appreciated.
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