Hello All,

I beginning to miss my VW. Never had a problem with it, but fell in love with a F150 (98 F150 4x4 v8 4.6L). When I test drove it the check engine light came on, the dealership replace both O2 sensors and the EGR.

400 miles later, check engine check light return which resulted in a new set of O2 senors to replace the "defective ones." 10 miles later, the check engine light returned. The truck runs fine. No misses, no poor acceleration. Could this be the EGR?

My theory is that if the O2's were defective, the EGR could have been coorupted. The mechanic thinks I'm nuts. Any thoughts?

 

What are the code numbers now?

 

I called my VW parts girl who looked up the check engine code for told me that the codes indicated faulty EGR. She doesn't remember the codes.

 

I don't think you have bad parts and without the code number we can only guess whats wrong. I'll take a guess and say intake leak, no I'll go with the DPFE.

 

Okay, I didn't even think of that one. I just looked at the Haynes Illistration to understand your conclusion. I'll go down to Auto Zone and have them check the check engine code and make sure I get the code.

I have a feeling you are right.

 

I'll place a bet on a leaking PCV elbow AND a faulty DPFE sensor since we're doing this in the dark.

Steve

 

While we're flinging bubble gum at the wall, I'll add stopped up EGR ports too.

 

Thinking about it. The fuel tank was pretty darn close to being empty. I thought they would have picked that up. I could be wrong. I'll get the correct codes after work.

 

Had the check engine code checked and the two sensor readings were P0401.

 

400 miles - gets a MIL - Then 10 miles later - another ......??

I'm goona have to go with the ports as well - DPFE would cough up a MIL repetitavly about the same time if he's rebooting after each adjustment..

If 401 was set - Its' usually the DPFE most of the time. BUT - I don't think so in this case if the Check Engine Light came and went as described..

I would clean the ports in the throttle body first and see what happends.

Heres a "How To" - http://www.fordf150.net/howto/throttlebodyclean.php

 

man gotta roll his pants up around here!

 

Hey torkum - wouldn't "channel 3" be the final answere?

 

exalent read thanks
i've been looking for this

 

Don't forget to take your shoes off

 

There's more where that came from -

http://www.fordf150.net/howto/