CCRM Questions

[91SHOInterceptor]

I looked through the database and didnt find the info I was looking for. Can a CCRM (IRCM) from one SHO go to another? Is it dependent on the type of ECM? Tranny? Engine? The CCRM in mine has the letter code "M". I have an X2J ECM since my LOS took a dump on me. Its a 91 MTX but has the 3.2L engine in it. The wiring harness is from the 3.0L engine.

Basically what is going on is the check engine light went on and off randomly and now is just on after the car starts up. The fuel pump is working but sounds like it is getting ready to finally go so I already ordered a 190 LPH. The car runs alittle rough and now is starting to stall at idle. While driving it does fine but every once in awhile chokes for a second then acts normal again.

I dont remember any of this happening before it was put away for the winter. I brought it out since it was nice and I ordered the PP Hiflow YPipe.

Any suggestions, ideas, or advice would be greatly appreciated. Thanks

Sean

 

[projectSHO89]

In general, any CCRM/IRCM can be interchanged with any that displays the same large letter on the label.

It is not highly likely that the relay module is the cause of your problems.

Do not guess as to the cause of the CEL. Run the codes!

Steve

 

[91SHOInterceptor]

The 2 codes that were pulled from the computer were 157 and 542. According to the list on SHOtimes.com, it says my MAF circuit is below minimum voltage(157) and the fuel pump secondary circuit has failed(542).

Can these two be related in any way?

 

[projectSHO89]

The 542 is commonly received if the engine has been stalled. Ignore it.

The 157 is a fault with the MAF sensor. You can try cleaning it to see it it helps. If it doesn't help, you may need to replace the MAF sensor. For a diagnostic, just disconnect the MAF sensor and run with it unplugged. You will have a constant CEL, but you will be more interested in seeing if the drivability issues are resolved with no sensor in circuit.

Steve