1997 Mercury Cougar Q&A
1997 Mercury Cougar Question: Engine idle
I replace the intake manifold on my car, now when I start it up it runs ruff. the idle is low. I checked all hoes and connections but when I try to drive it it runs like it wants to turn off. any help is good - Visitor
fuel pump most likely...there is a trip switch in the trunk on the left hand side under the linner...also if you come out to your car and it wont crank but will turn over try to spray starter fluid into the intake ....if it cranks but dies its the fuel pump,also try to pump the throttle before actual crank ....this is for the v8 model - Visitor
If you experience difficulty starting the engine when cold, stalling at idle, or hesitations during acceleration, it may be the idle air bypass valve. This valve helps the vehicle idle steady when ...
when starting 5.0 ,engine light flashes 5 times in about 7-8 seconds,idle at 1800 rpm,about 1 min,engine rpm drops to 750-800.1 code i recored said 121?
my idle jumps up just a few notches when I start the car and can this be due to the idle not being set correctly
At idle, the motor has a thump when the pistons fire. Sounds like a piston misfire. The engine light may be something else.