check engine light?

[BigGump]

On my 90 F350 w/460 I get check engine light after driving for about 10 mins any thoughts

 

[O'Rattlecan]

Well... I hate to sound cliche, but have you pulled the codes? We can't just guess without any hints.

Ryan

 

[BigGump]

Sorry but how would I do that?

 

[blacksnapon]

you need a code reader.

 

[O'Rattlecan]

If you generate a check engine light, the computer is telling you that it has some information for you. There are a couple of ways to go about pulling the codes.

The first option is to use a code reader. A Ford OBDI code reader is available at most auto parts stores for $20-$30. It will come with a manual to describe all of the codes that you can share with us here. Some of the auto parts stores will let you borrow a code reader in the parking lot for free. Note down what the reader says and let us know.

The second option is a little more labor intensive. But you can pull codes from your truck without a code reader. Use this procedure:

http://www.fordfuelinjection.com/?p=13

Ryan

 

[BigGump]

Thank you I will get codes and then reply

 

[BigGump]

So here are they codes I get. 26 MAF sensor greater then 0.7 volts engine off. # 27 ? #28 VAT sensor out of self test range and # 33 EGR valve opening not detected. Hope some one has some ideas.

 

[BigGump]

Any ideas. Where is the EGR mounted.

 

[O'Rattlecan]

On my 351w, the EGR is mounted on the front of the passenger bank of the engine. It connects the exhaust & intake.

Do you have any symptoms or are you just trying to get rid of the Check Engine Light?

Ryan

 

[BigGump]

no symptoms runs fine. Just wondering why light keeps coming on. So those are the codes i pulled out not sure what they mean.