Idle racing after a IAC replacement. How do I slow this thing down to normal?

Asked by Oct 03, 2015 at 08:40 PM about the 1997 Ford E-150

Question type: Maintenance & Repair

I replaced an IAC valve on a 97 Ford E-150 with a 4.6L v-8 due to it
making an annoying, loud humming noise. After replacing the valve on the
first attempt to start the engine the humming got worse and was constant.
I took the valve off again and then checked the gasket then reinstalled the
IAC. Started the engine again and this time there was no humming but the
engine was racing at idle. What can I do to stop this?

2 Answers

235

sounds like the iac passages are stopped up , id try and take iac and clean the passages out , it will get rid of the humming also, good luck, or you have a big vacuum leak,

1 out of 1 people think this is helpful.

Turns out the auto parts store gave me the wrong part. The box and number were correct but the part inside was wrong. So now I wait for the hopefully correct part to be shipped in because no one carries the part in stock.

Your Answer

Add photo

Related Questions

Search Ford E-150 Questions

Ford E-150 Experts

#1 FordNut
FordNut
Reputation 630
#2 Tracy Hooks
Tracy Hooks
Reputation 490
#3 kbro
kbro
Reputation 420
View All

Related Models For Sale

Used Ford F-150
2,569 Great Deals out of 210,955 listings starting at $1,000
Used Ford E-350
235 listings starting at $495
Used Dodge Ram 1500
479 Great Deals out of 12,270 listings starting at $1,995
Used Ford F-250
516 listings starting at $2,500
Used GMC Sierra 1500
893 Great Deals out of 62,317 listings starting at $1,395
Used Chevrolet Express
97 Great Deals out of 5,967 listings starting at $3,500
Used Toyota Tacoma
597 Great Deals out of 34,735 listings starting at $2,155

Used Cars For Sale