So does PS keep foaming down? If so could it be possible that without PS that air is collecting in the filter and stays there until there is enough flow to push it out--say right after a "brisk" acceleration to merge onto the freeway?

And could the air get in their due to either sloshing or because of the return line?

I would doubt the PS alone would solve the fuel problems you "may" be having. I supect either air in lines from loose fitting or a large pocket of air in the filter, but it could also be a filter plugging up from stash or biological growth from the fuel you bought somewhere.

One needs to rememer that mico organisms can grow in regular #2 diesel as well as biodiesel, it has been a common problem for diesel owners for years. If you have taken a sample of the fuel and it has little black dot looking things in it you have a bio bloom in your tank, same applies to a milky white looking stuff that could be bio bloom in biodiesel.

Most likely problem if fuel related is air in filter for some reason and is easy to check by purging at the filter head. If there is a lot of air there and problems continues recheck for air in filter. If you have air in filter again then you have a loose line or connection somewhere.

(SNIP)

F37 scanned document can be downloaded here: http://www.sendspace.com/file/uncbgl

I hope this link works!! It's hosted on freeware, so be patient...

That is the problem when people quote the 5252 rule...this engine won't pull 5252 rpm.

1:1 ratio and TC lockup is the key to good dyno numbers.

Diesel World did us all a tremendous favor in their September 2006 issue. They tested 2 power modules, with before and after dyno figures listed, all in rear wheel numbers. They measured the stock 06 CRD with only 1 modification - a Dynamax muffler - for stock readings. Then they measured rear wheel hp/tq with 2 different power boost modules (DieselPower and DP Predator).

They tested in 3rd gear and noted that power/torque fell off quite rapidly after 2000 rpm stock, but the curve flattened out nicely with both modules. The reason I'm posting this is that the figures Dieselworld listed are much higher than those on this thread. They used a company called 454Dyno (www.454dyno.com - Metairie, LA)

Stock Rear wheel figures 1800 rpm

torque 268 lb-ft
hp 159 hp


DieselPower/Predator rearwheel at 1800 rpm (both modules too close to matter - averages used here)

torque 308 lb-ft
hp 184 hp

All figures rear wheel not flywheel.

Something seems very low on the dyno test posted earlier. Perhaps if enough members of this forum contacted DieselWorld (not DieselPower who hated the CRD) and asked them to re-run those same tests [/b]again on a vehicle with the F37 recall performed on it and publish the results it might settle the issue as to the amount of power loss.

Odd...this link no longer seems to work for me. I'd like to go to my dealership armed with this info...anybody have any ideas?

[(SNIP) The link still works for me.

It’s also available @ ALLDATA, if you can't get the other link to work.

See here:
http://alldata.com/tsb/Chrysler/1164960 ... index.html

Chris

picked up my liberty this morning, they performed the recall and replaced the TC and did the flashes but did not replace the pump. trans still shudders. called dealer back immediatly and its going back in early next week. i asked them if they test drove the vehicle and they said yes, but would not comment if it repaired the problem. The dealers are sick of this as well, along with being paid minimal for the repair.

3 repairs to the egr related system
ball joint recall
f37 recall..not repaired correctly..going back in
15,750 miles and 8 months in service

this is not a good track record,

Bryan

Said it could take 2 days to do the fix as they could find more wrong with it once they dive into the tranny.

This is the kind of statement from a dealer that really bothers me bacause it proves they have not read F37 prior to talking with their customers. The transmission is not opened up at all when the TQ is replaced. Not even the transmission pan. The TQ is the mechanisim in between the engine and the transmission, hidden by the bell housing.

I was told the same thing by my dealer prior to tc fix. He told me that they were not allowed to order replacement tc until appointment for recall had been set and then could not order pump until after tc was worked on. DCX told the dealers that only a small % would need pump and that they could have it shipped next day if needed. Mine needed only the tc fix, pump was (allegedly) ok and fixed in about 5 hrs. If they had to get the pump it would have taken 3 days total out of service

This is the kind of statement from a dealer that really bothers me bacause it proves they have not read F37 prior to talking with their customers. The transmission is not opened up at all when the TQ is replaced. Not even the transmission pan. The TQ is the mechanisim in between the engine and the transmission, hidden by the bell housing.