Commander 3.0l crd engine problem "PLEASE HELP"

[gleeson235]

Thanks Mate, I have been getting parts out of The Horsham Car Centre in England. They are really cheap & only take about a week to arrive. They do a service package with air, oil & fuel filter for about $110 AU delivered. They were on Ebay but they seem to have gone. You can email them direct. I got my throttle position sensor from them for about $160.
On another note, i put the commander back together this afternoon. 4 hours & 4 beers later, i fire it up & take it for a drive. The thing is flying with no surging or red light. I dumper the throttle a couple of times & it launched. What the????
I'm not complaining, but i still don't know what it was or is??
The only thing i did was remove the cats clean the sensors in them & pull off a few electrical connectors & reconnect them.
Anyway, touch wood its fixed. I'm not holding my breath though.
Oh, i did ring my local Jeep dealer & there is a 4-5 week wait to get it looked at.

[gleeson235]

Stop the celibrations, red lighted on the way to work.

[gleeson235]

Removed CPU & throttle, cleaned terminals & checked Ohms on cables. All OK. Put everything back & it now runs without the surging, but in limp mode. hooked up scan tool & delete the codes. Runs fine for about 10 mins & limps again. Back to the scan tool. P0403 EGR Circuit malfunction. Removed the EGR & cleaned. Replaced but still Limping. Waiting for test procedures to confirm bad EGR. I wonder what code it will spit next.

[GO'ARD]

hope you find out what it is mate i have been watching this post and praying you find it
good luck with diagnosing the egr

[gleeson235]

Has anyone bypassed the EGR before??

[gleeson235]

Originally Posted by GO'ARD

hope you find out what it is mate i have been watching this post and praying you find it
good luck with diagnosing the egr

Thanks Go'ard, I hope i find it too. It's been a real pest. I am hoping the EGR was the problem all along & the throttle prob was a symtom that went along with it. The auto elecrtician said it's not the first time he has had a fault code send him on a wild goose chase. I've got my fingers crossed.

[gleeson235]

Well it looks like we have a winner. Took it to the Auto Elects today with the test procedures for the EGR & bingo. The thing is not working. It stuck in the closed position. I may have been stuck in the open position for a while to explain the surging problem i had to start with. I also read some where on a Merc forum that the EGR works in conjunction with the turbo, again explains if stuck shut, why the air is blowing back out the front of the turbo when you back off quickly. All fingers crossed. I'll be back on the road in no time.
Firstly i will have to mortgage the house though. Jeep Aus want, sitting down, $1930.00 for it. I have Jeep Engines in QLD getting a price out of the states for me but i think There's are different. They have cooling inlets from the radiator.
I have also sent an email to Europarts.
Horsham Car Center out of England have quoted me $610.00AU including delivery.
If there is any other options for purchase, I would appreciate them.
3.0l CRD EGR Valve Part # Jeep 68064963AA
Merc A6421400860
I also have the P0403, P2121 & P2138 test prcedures if anyone want tham.