Most are aware of the purpose of the IACV on the Mark VIII and the problems a failing IACV can give. This applies to much more than the Mark VIII.
This afternoon, I arrived back at the office from the field with the shop mechanic telling me my wife's TownCar wouldn't run.Oh boy, just what I didn't need. He thought perhaps it was the fuel pump. He even suggested it was making a lot of noise. I went to investigate.
Turns out the noise was the suspension compressor he was hearing. But, the car wouldn't start. More accurately, it wouldn't idle. Crank, fire, die. Feathering the throttle coaxed it to run and it appeared to throttle up and run just fine. Letting off the throttle it would just die.
No check engine light was on, but we checked for codes anyways. None were found. I pulled the beauty cover from atop the engine and a quick glance of the throttle cable revealed no problems. I checked the intake filter and found no problems. Hmmmm... could it be the IACV? Unplugged and plugged the harness connector to the IACV with no change in the symptom.
I was able to finally coax it to sit and run, but barely running at an extremely low idle. I looked for a hammer but found none handy. But I did have the 3/8" ratchet I used to pull the engine beauty cover. }( A couple raps later on the IACV with the handle of the ratchet, the 4.6L sprung to life idling happily at it's proper rpms.
Atleast it's easy to get to.
This afternoon, I arrived back at the office from the field with the shop mechanic telling me my wife's TownCar wouldn't run.Oh boy, just what I didn't need. He thought perhaps it was the fuel pump. He even suggested it was making a lot of noise. I went to investigate.
Turns out the noise was the suspension compressor he was hearing. But, the car wouldn't start. More accurately, it wouldn't idle. Crank, fire, die. Feathering the throttle coaxed it to run and it appeared to throttle up and run just fine. Letting off the throttle it would just die.
No check engine light was on, but we checked for codes anyways. None were found. I pulled the beauty cover from atop the engine and a quick glance of the throttle cable revealed no problems. I checked the intake filter and found no problems. Hmmmm... could it be the IACV? Unplugged and plugged the harness connector to the IACV with no change in the symptom.
I was able to finally coax it to sit and run, but barely running at an extremely low idle. I looked for a hammer but found none handy. But I did have the 3/8" ratchet I used to pull the engine beauty cover. }( A couple raps later on the IACV with the handle of the ratchet, the 4.6L sprung to life idling happily at it's proper rpms.
Atleast it's easy to get to.