TRNW-2: 66RFE And 68RFE Pump Failure Identification

[Chris and Cathy Kershaw]

Vacuum testing, seems like the gas units are more salvageable than the
diesels. On diesels I figure new oe pump & new oe vb on every one. Gas
units we've been able to fix everything with transgo tools and parts.

On Wed, Sep 3, 2025 at 1:06 PM Tony's Autoworks via trnw2 <trnw2 at trnw.net>
wrote:

> Hello group,
>
> Wanted to know how you guys are checking these pumps for wear and or
> common issues to look for to determine if the pump is bad. At first
> look, I normally don't see any major issues with them, but lately I
> have gotten burned on a few builds with pressure losses with codes
> like P0868, P0933, P0934. Going through the database, most of the
> fixes with these codes it's either pump issues or filters or EPC's and
> their harnesses. Others I have found to be software tuning issues.
> Besides what the ATSG manual shows and what's on Sonnax website, I'm
> interested to know what you guys do on a teardown to determine if a
> new pump is needed. Every rebuild I do gets a transgo kit, and only
> Mopar EPC, Solenoid pack, And Filters.
>
> Thanks
> Tony
> This message was sent from the TRNW Technical Discussion Forum (trnw2).
> You were sent this message because you have subscribed to our mailing list.
> If you don't want to receive these emails from TRNW in the future, please
> unsubscribe here:
> https://www.trnw.net/unsubscribe.php?forum=2
> TRNW Inc., 2825 Walnut Terrace, Modesto, CA 95355
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.trnw.net/pipermail/trnw2/attachments/20250903/f121f2a0/attachment.html>