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95awd2008 · Post by **95awd2008** » April 1, 2009, 3:57 pm

well its not the crank sensor i put a new one on it and no change

36truck · Post by **36truck** » April 1, 2009, 4:02 pm

Did it check engine light come on?

61 Merc · Post by **61 Merc** » April 1, 2009, 4:59 pm

Do you have full fuel pressure, if the pressure isn't high enough it will not fire. Install a guage off the rail. The O2 sensor, from what I am told is disabled by the computer for the first few minutes till it gets heated up.

Other than that, I have no suggestions, but it sounds like you are having fun.

Dean

Fordman · Post by **Fordman** » April 1, 2009, 6:21 pm

what is the back story? i didn't see it.

Slick Fan · Post by **Slick Fan** » April 1, 2009, 6:42 pm

Fordman wrote:what is the back story? i didn't see it.

I think it's this story...
http://fordtruk.com/forums/viewtopic.php?p=87366

95awd2008 · Post by **95awd2008** » April 1, 2009, 6:43 pm

Fordman wrote:what is the back story? i didn't see it.

i didnt mean to start a new post (back story) is in the off subject under 95 4.6 thunderbird help

95awd2008 · Post by **95awd2008** » April 1, 2009, 6:51 pm

61 Merc wrote:Do you have full fuel pressure, if the pressure isn't high enough it will not fire. Install a guage off the rail. The O2 sensor, from what I am told is disabled by the computer for the first few minutes till it gets heated up.

Other than that, I have no suggestions, but it sounds like you are having fun.

Dean

not sure if it has full pressure but it squerts gas out the bleader on the fuel rail 2-3 inches high i can hear the fuel pump running. i took off the fuel line at the filter and ran it in a jug and turned the key over for a few sec. and it pumped a few ounces of fuel in the jug

there a guy supost to come tomorrow and read/check the codes
yeah its been lots of fun so far..lol

95awd2008 · Post by **95awd2008** » April 1, 2009, 6:54 pm

36truck wrote:Did it check engine light come on?

check engine light has been on for ever. its always had a miss that would come and go. i always thought it was where i would get gas at differnt places

Fordman · Post by **Fordman** » April 3, 2009, 12:08 am

well any answers i had are already covered. convertor and fuel to the fuel rail. i guess the only thing next would be spark? or some kind of computer control deal.

deviant1 · Post by **deviant1** » April 3, 2009, 2:46 am

It could possibly be the idle air bypass motor failing. If it sticks in an open position it will cause you to have a vacuum leak. The idle air bypass can fail due to mechanical or electrical problems, and sometimes because of a chunk of loose carbon stuck in it. It's about a 50-60 dollar part.

ridgerunner · Post by **ridgerunner** » April 3, 2009, 11:19 am

i had a fuel regulator go bad that acted the same way

95awd2008 · Post by **95awd2008** » April 3, 2009, 9:47 pm

deviant1 wrote:It could possibly be the idle air bypass motor failing. If it sticks in an open position it will cause you to have a vacuum leak. The idle air bypass can fail due to mechanical or electrical problems, and sometimes because of a chunk of loose carbon stuck in it. It's about a 50-60 dollar part.

where do i find the idle air bypass motor & how can i check it?

95awd2008 · Post by **95awd2008** » April 3, 2009, 9:48 pm

ridgerunner wrote:i had a fuel regulator go bad that acted the same way

where is the fuel regulator and how do i check it?

ezernut9mm · Post by **ezernut9mm** » April 3, 2009, 9:55 pm

check these guys out: http://www.tccoa.com/

they can be a pretty helpful bunch. thunderbird and cougar club of america

Post by **Greg D** » April 3, 2009, 11:54 pm

The Idle Air Control Valve will be just back from the throttle body on the intake, should have 2 small bolts and a wire plug in it.
The Fuel Pressure Regulator will be on the fuel rail and may have a vacuum line running into it.
Look the parts up on Autozones site and match them with the pics.

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