The egr tube on my 97 f150 has come loose from the exhaust manifold. It looks like the nut on the manifold is rusted away. Has anyone else had this problem? Does anyone have any ideas on how to fix this? Will this make my check engine light come on? If I have to replace the manifold does anyone have any tips? Thanks

 

Have you checked with the dealer for a new tube? Has the manifold fitting rusted out

 

The tube is part of many testing routines to be sure the EGR system works as designed.
The EGR system is held to very close operating tolerences mandated by the EPA.
The tube is a major part that supplies exhaust gas flow under pressure to the EGR valve.
Pressure testing is done using the DPFE to 'readout' the results accross an orfice in the tube.
A break or open to the outside will fail one or more of the tests.
Usually you will see a P0401 or P0402 failure code first.
The reason for the EGR is to allow a small amount of exhaust gas back into the intake along with the normal air and fuel.
This cools combustion that reduces NOX results of combustion that the CAT cannot fully handle.
The EGR operates at about 1800 to 2500 rpm in overdrive and light throttle where the engine spends most of it's time on the highway.
The other benifit of this is to increase fuel mileage by reducing the amount of fuel injected and an advance in ignition timing, since the cylinders will be lean during this period at those operating parameters.
This also places a higher load on the coils since they have to have reserve voltage to fire the higher air/fuel ratios that approch 20 to 1.
If not, even one low output coil will cause the motor to miss upon application of light throttle to accelerate (this is a give-away to what is happening to cause a miss).
So there you have about the whole story and more than you wanted to know.
Good luck.

 

I cant tell if its the fitting in the manifold or if its the nut on the end of the tube. Does the tube screw into the manifold with a threaded fitting or is there a compression nut on the manifold? Its so rusted that I cant tell how it is supposed to be connected. I was looking at the exhaust manifold, is it held on with studs? I can get the tube from Oreily autoparts. I guess from the info that bluegrass 7 provided Im going to have to do something about it. It has been sitting for about 6 months, but now im getting ready to start driving it.

 

What size is the engine? These tubes are not all the same.

 

My truck is a 1997 f150 xlt super cab 4.6 liter. 130,000 miles. I found some stuff on the permatext web site that is called hi temp metal. Its supposed to be used for cracked manifolds. Anyone ever use it before?

 

I have serious doubts that anything short of replacing the damaged parts is going to hold up.You should only have to do it once.It will likely be a PITA,but at least it will be right,and behind you.

 

F65Z9D477B .. EGR Tube Assy / Fits: 1997/03 F150 4.6L / 2004 F150 Heritage 4.6L.

MSRP: $73.32 // FTE sponsor y2kfordparts.com price: $52.79.

 

Thanks Bill,


I'll be happy to sell you one...


Ed

 

Uh.....You mean you'll be happy to sell the OP one...

I don't need it...cuz it doesn't 1963 Galaxies, 1965 F100's, 2008 Fusions or Edge's.

It doesn't fit 1934 & 1939 Packards, 1962 Bentley's and 1963 Studebakers, either.

 

you know what I mean.


to anyone needing any and all Ford parts I will be happy to assit you in your purchasing process.


that a little better, you gezzer!



call me tomorrow when I'm at work..


I have to go make dinner now....

Ed

 

Don't overcook the hamburger helper...cuz it'll taste sub-parr!!

 

I just took my EGR valve off my 4.6 tonite.
Thats a 1 1/16 nut on the back of the EGR valve. Be sure to get that nut loose before you take the Egr Bolts out.

I havent looked at the part down on the muffler yet. I used to hear what sounded like an exhaust leak from under the truck.
I've always had the EGR 'insufficient flow' fault on this truck.
I'll crawl under there and have a look tomorrow.

 

nope, made chilli dogs..


I dont do anything SUB-PARR ........

 

I went ahead and put some of hi-temp metal stuff on there. I realize it probably wont last very long but its worth a shot for only $2.50. I will let you know when it breaks! Thanks for all the help guys.