Better to clean or replace?

Hi all, so on Monday I changed the intake manifold on my ‘06 Grand marquis with 95,000 miles on it. When I started her up everything seemed fine, had no trouble codes, well when I took it to the store the next day the check engine light came on. Got the codes scanned at auto zone.

I was wondering can it be the tps that needs to be cleaned? And if so what’s the best way to cleaning the tps? When I had the throttle body unit off during the repair it looked fairly cleaned… but maybe it would be best to give that a spray of throttle body cleaner. Other than that the car runs good.

The code indicates a problem with the Idle Air Control valve circuit.

Not the Throttle Position Sensor.

You can try cleaning the IAC valve to see if it helps, but what I’ve found with Fords is, when there’s a problem with the IAC valve, it usually requires replacement.


This might be informative.

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Thanks for the responses. When I get home and have time I’ll be sure to check it out and let you guys know if I can get the light off and her her back on the road again.

I know this might sound stupid, but does my car have a iac valve? I know starting in ‘05 ford went with the DBW (drive by wire) type throttle body assembly… I just wanted to double check as I can’t recall seeing the iac valve when I was repairing the intake.

Turns out the throttle body needed to be cleaned. All is well with the car now.

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Good going. Thanks for sharing your good news.

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Excellent job OP on getting the problem solved. Best of luck

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