Customer: ***** ***** Jackson. My 2004 Ford F150 has a whistling sound similar to what the old smog pumps sounded like when they went bad. When the engine
is cold, it is quiet, but starts to whistle within about 3 minutes (at an idle). And then when I shut the engine off, it continues for about 3 seconds. Just installed a brand new Ford crate motor. The sound seemed to be coming from either the torque converter or transmission
pump, so I had the transmission rebuilt. Truck has 139000 miles on it and I acquired it with the bad motor. Removed the fan belt and the noise continued. Could it be coming from the EGR valve?
JA: Thanks. Can you give me any more details about your issue?
Customer: I tried to eliminate vacuum by removing the line at the intake manifold, but made no difference.
JA: OK got it. Last thing — JustAnswer charges a fee (generally around $28) to post your type of question to Ford Experts (you only pay if satisfied). There are a couple customers ahead of you. Are you willing to wait a bit?
Customer: Yes I need to take this truck on a trip Thursday the 7th. Any help would be appreciated.
JA: OK. Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.