http://www.ebay.com/itm/Full-B...em20c552cf92&vxp=mtr

 

http://www.ebay.com/itm/Gibson...em257043adad&vxp=mtr

 

Originally posted by Ghost03hemi:
Look what a friend gave me today. A 4" S/S diesel exhaust tail pipe. Well, I did have to pay him with a Coke Zero and a Payday candy bar.

Just need a 4" inlet/outlet straight through muffler.

I want one....lucky!

 

Originally posted by charged392:
What's the code #

P0406

Cant get rid of it for the life of me. I really want my MDS to work but this code won't go away.

I'm also throwing an IAT sensor high code. Not sure on the number, gotta wait for it to come back

 

Ok then u have a few possibilities either the valve you just got is bad, a wire is shorted to positive (make sure harness is not burned anywhere), or you have a bad PCM, or the ems extension harness is wired wrong (I think u have one right)

 

It definitely not the iems3 as it doesnt even touch the egr. The valve is off Josh's old motor and works as far as I know. So its gotta be a short or burned wire. I ran for 6 months with no issues last year when the turbo went back on and then the truck would bog down and throw the egr code and then run fine. Clear it and it would stay off for say 20 min and do the same thing and come back. Bought another used valve and that caused it to stay on constantly and with the current valve it does the same thing. Except the code wont clear now..

 

Wouldn't the IAT "high" be a shorted IAT sensor (not likely) or the two wires going to the IAT sensor shorted together? I don't know what sensor give's a EGR code, but this does sound like there is a couple wires crossed. Thinking out loud...

 

Originally posted by Carrolls Ram:

Originally posted by charged392:
What's the code #

P0406

Cant get rid of it for the life of me. I really want my MDS to work but this code won't go away.

I'm also throwing an IAT sensor high code. Not sure on the number, gotta wait for it to come back

What changes if you unplug the IAT? Will throw a code, but does the code change?

 

Why don't you just do an egr delete?

 

Originally posted by Carrolls Ram:
gotta be a short or burned wire.

 

iat unplugged will throw a high voltage code check your wiring closely and make sure all fuses are
Good

 

My neighbor has a 3500 Dodge Ram. He has a exhaust stack sticking up behind the cab in the bed. I had to ask him if he just happened to have a 4" exhaust muffler. He said, yes he does. And he gave it to me for free.

It's a Banks Dynaflow 24" straight through muffler.

 

I unplugged the IAT and checked everything and plugged it back in the way i've always plugged it in so I'll have to see if it pops back up. As for the EGR delete, I had Dave turn the EGR off in my tune but the truck ran really weird. Fuel trims went completely whack and boost afr was all screwed up. Had him turn it back off and everything immediately went back to normal. My truck likes to run with everything working. Not sure why.

I just want my MDS to work again..

 

Hummmm..... Ground wire maybe????

 

I have no clue. Only wires that have been touched is the PCM but those wires all match up with the patch harness and the battery cables are on tight. Just started doing it one day.. Dont know where the short could be

 

Your exhaust Is ran diff make sure the loom doesn't look melted anywhere it's not stock if the jumper harness is good then it's likely a wire issue somewhere

To bad your not closer I have a power probe short finder and it wouldn't take but 20 mins to check all the wires on egr circuit if you know how to use a multi meter to a continuity test between the PCM harness and the sensor plug and check for opens or shorts

 

As far as I know, nothing is melted. The harness isnt close to the down pipe. I'm not good with a multimeter.. lol

Id take it to the dealer but theres 100 bucks down the drain just for them to tell me they wont touch my truck because of the modifications

 

You might have to trace the wires back through the wiring harness to the computer. It has to be something simple that's easily overlooked. Keep at it Austin. You'll find the problem.

PS. Try and look at the problem from a different angle.

 

I may look at it from the angle of bringing it to your house and letting you fight with it

 

 

Worst case I will bring a meter to the next g2g and a wiring Pinout and test the circuit for you

 

That would be awesome. I've got an excel spreadsheet of all the pinouts on the pcm if needed. Actually its the pinouts of an 04 and 07 side by side to compare them

I need to learn to learn to use a meter lol

 

 

When you did the egr delete...did you physically remove it and add a egr delete kit?

 

Just turned it off in the tune. Probably why it went wacky. But it went wacky when he turned off my rear o2 sensors