PO125 code

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Feb 18, 2008 | 07:31 PM

stickboy42461

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PO125 code

I was reading some of the other posts about this code and have some questions. I periodically get this code and clear it. I t may stay gone for a while and it may not. I think I am going to change the TSTAT out and start at this point. I would like to Know which TSTAT to use. Do I need to use the 180 or 195 I need help? I have a 2000 4x4 with a 4.6L in it. I have not noticed the temp guage not working maybe it has been working a little slow. Will this repair my problem.Any help will be appreciated. Thanks in advance.

Feb 18, 2008 | 08:13 PM

antony25

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Joined: May 2005

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From: Omaha, NE

Bad thermostat. Do not use a fail safe t-stat and be sure it is a 195*

Feb 19, 2008 | 05:45 AM

projectSHO89

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From: St Louis

Agreed. Your old thermostat is getting slow to respond.

Stick with the stock unit.

Steve

Feb 22, 2008 | 02:30 AM

Zappo90744

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So would this also apply to me? I went yesterday to get a Smog Check on my 2000 Lincoln Town Car which has a Ford 4.6L and failed with code PO125. Low ECT for Closed Loop Fuel Ctrl. I just had a new intake manifold and thermostat put in last year!

Feb 22, 2008 | 04:11 AM

LxMan1

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From: Louisville,Ky.

Sounds like it. The engine is not reaching the proper operating temp.
Always use a 195 Thermostat.

Feb 22, 2008 | 01:58 PM

Zappo90744

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Great...thanx for the advise....I'll replace it today. Hopefully that will take care of my problem. I'm assuming if it continues next thing to look at is my temperature sensor right?