how to remove the egr valve on a ford thunderbird 4.6 litre?

Question

it is to my understanding I have to remove the upper intake.... is the egr attached to the lower intake?

does anyone know what that coolant hose is running under the intake behind the water pump on top of the block? where does it go and is it worth me taking the intake off to replace sience I am going after the egr?

Answer 1

I agree with kayef57 100%. The biggest and single most common mistake people, not familiar with Fords make, is misdiagnosing the EGR valve as needing replacement. I assume the model year you are working with is a 1995, or older with the cast aluminum intake manifold that always plugs up completely inside the EGR passages with carbon. If you are getting a P0401 (EGR flow inssufficient) code, that would be the reason. Remove the four 8mm throttle body 90 degree adapter bolts, and remove the adapter. Plug up the intake manifold opening with a rag, so that you don't drop anything inside the intake. With liberal amounts of carb, or tune-up cleaner sprayed inside the passages, scape off all carbon debris, taking care not to let the debris get into the engine. Now, either clean or replace the throttle body adapter to intake gasket. It's not expensive if you purchase it from the Ford dealer parts department. Replace everything, and you are all set. In answer to your question about the coolant tube, that's the tube that runs from the heater core to the water pump. Hope this helps.

Answer 2

I agree with the other two posts.. the EGR is not a fun thing to change and I find a lot of people misdiagnose it as the EGR after the DPFE sensor is replaced (espcially on the ones with the older style PFE sensor)



Listen to Kayef and Rakel.. but Rakel is right.. Ford had a TSB on cleaning that port out (and gives great instruction on how to actually do it) and for a shade tree is about a 2-3 hour job.. Best thing is a can of throttle body cleaner (to clean that T/B and I find it cuts the carbon better in those EGR ports) and the throttle body and upper intake gasket... To change it, no coolant hoses ..just a vacuum hose that you have to watch out for breaking about all...

Answer 3

Depending on the year, if the valve is or looks behind the intake, it is easier to remove the valve from the bottom. The converter on the right side maybe removed for easier access. Usually the egr valve doesn't go bad, so make sure it's that first.