egr bad

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Jan 25, 2005 | 09:19 AM

dmacfordshot04

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From: owego ny

egr bad .replace or not

my 86 f150 351 ho has a bad egr .truck runs fine execpt for little hesitation
on from a complete stop.is it nessasery to to replace it at 60.00 bucks?

Last edited by dmacfordshot04; Jan 25, 2005 at 10:06 AM.

Jan 25, 2005 | 11:40 AM

688i

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How do you know it is bad? I was getting the 131 code on mine and fixed it by unscrewing the top, dropping a penny in flat and screwing the top back on. It seems the gap between the probe and sensor wears until the signal is lost. I have a 302 FI so am not positive yours is identical.

Jan 25, 2005 | 12:21 PM

fellro86

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From: Marengo, Iowa

Another thing to try before dropping the bucks is to take it off and spray a penetrating oil on the pintle and shaft, and work it. I had one a while back that the pintle was stuck open, and it was about $80 to replace, so I tried soaking it in WD40, and it cleaned all the carbon off, and freed it up, and works fine.

Jan 25, 2005 | 01:22 PM

dmacfordshot04

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From: owego ny

i tried all that &had it checked &it does not hold vac due to a bad diaphragm .

Jan 25, 2005 | 01:27 PM

dmacfordshot04

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From: owego ny

i just want to know if that will cause the hessitation problem ithat i am having before i go replacing it?

Jan 25, 2005 | 01:32 PM

fellro86

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From: Marengo, Iowa

ok, a bad diaphragm will cause a vacuum leak, and it unfortuantely does need to be replaced. You could plug the hose temporarily to check and make sure if the hesitation goes away.