[Need Installation Details for a Mopar Performance MPI/EFI Conversion Package]

On 9/15/2022 at 1:03 PM, Moses Ludel said:

If you do not have the wiring schematic for a 1994-95 YJ Wrangler, let me know...I have the Mopar FSM for 1994 YJ/XJ in my library.  Wiring diagrams are in that manual.

Moses     

Moses,

  Thank you very much for the info!  A lot there to read and re-read again.  I just ordered your book (3rd edition) and hope it gets delivered soon.  I will check out that section you spoke about.  Yes, I will need the wire diagram and appreciate you offering it.  

 

Many thanks!

Patrick

(zimbar)

[Need Installation Details for a Mopar Performance MPI/EFI Conversion Package]

On 8/31/2021 at 8:56 PM, Moses Ludel said:

myndcrym...HESCO should have the replacement pump.  Whether you have the single- or two-rail system may not make a difference with the fuel pump.  (Confirm this at the HESCO site.)  If you take the specs (PSI and GPM or GPH) from the pump I.D. tag or stamping numbers, a Walbro or similar replacement pump would work. 

You need to match polarity and the pressure/volume output.  The pump trigger is the ECM/PCM.  Make sure you get the trigger from the PCM.  Simply put, don't bypass the EFI and PCM functions.  The pump needs its signal and power via the 60-way PCM and fuel pump relay.

Moses

Moses,

  You seem to know quite a bit about this kit.  Since Ma Mopar is no longer producing this kit (P5249686), I've been trying to cobble together all the bit parts to install on my '86 CJ.  One part has stymied me so far is the wire harness.  Hesco doesn't make a replacement, but suggested I pull the harness out of a '94-'95 YJ.  Would you know what wires I can purge out of this harness, and how to make it work in my CJ?  Is there a wire diagram for this?  I've read other places that there are two relays that are in the MPI kit harness that attach to the firewall....from the posts up above I gather one is the fuel pump relay....what is the other?

 

Thanks