Questions & Answers for: Mercury Cougar wont run over 1500 rpm

...wont run. When it starts it will run for a couple of seconds before dying. It will not go above 1000 rpm. I have checed the fuel pump, fuel filter, and max air flow sensor. All are good. What else ...

...1500 rpm and easily let off gas so it wont stall, if i just let off gas it stalls until engine is warm. 2.5L V-6 with manual 5-speed transmission. Common issue at the shop (i'm a ford technician), ...

...run the whole length of my car. For the past few days, its progressively gotten worse starting with a few sputters while driving causing my lights to dim and lose power temporarily. Then, i driving ...

wont idle; car dies; brake pedal becomes tight This problem appears to be a vacuum leak. Look around the engine for cracked and dry-rotten hoses first and replace as necessary. To check for an intake ...

1500 rpm) then the reading should be 14 to 14.5 volts if it is lower than any of the above, or even higher (as overcharging can do the same) that means your alternator/generator is u/s hope this helps

1500 RPM at a stop and will accelerate to 40mph without applying the accelerator? Seems to bea problem at higher speeds too. What could be causing this? Could be a faulty IAC (Idle Air Control) motor.

rpm wil go up but takes it a minute 2 shift.When it shifts tho it dont shift hard just trying to find the problem does it happen more when turning,could be the fuel pump,they had a replacement program

engine rpm and speedometer peg Once they peg high they slowly return to normal. Actual engine rpm does NOT go up with indications of RPM and speedometer. this occurs after attempting to start the car ...

2000 mercury cougar engine speed stays up when gas pedal is release, increase when pedal is release and shifting gears, takes 3 seconds or more to come down to idle when gas pedal is release, will ...

run better now but still loops at idle go's up to 1500 rpm and down to 500 for a about 3 times then stalls any ideas? i had the same problem on my car. it was the idle air control motor (stepper motor