Chips and ICM's?

[Makahveli]

I was wondering if I bought an apten chip, does that replace my ICM. my ICM is throwing codes and needs to be replaced, just wondering before I run out and buy another one.

 

[jgilbs]

well, i dont know what you mean by ICM, but if u are talking aqbout the PCM(Powertrain control module) The Chip DOES NOT replace the module - for the 92 it connects in a harness between the sensors and the computer. Someone might have to correct me on this, but I beleive the chip gives you the ability to turn off the CEL, but you would still need to fix the problem, there would just be no light

 

[Makahveli]

so the chip replaces nothing, just an add on?

 

[Albino 94LTD]

All a chip will do is change timing and fuel/air ratios and on later models with electronically controlled transmissions, it will alter the shifting for more performance. It attaches to a service port on the side of the OCM. Removal reverts your PCM to the stock settings.

If you are getting CEL codes, fix whatever the codes indicate. Putting in a new PCM won't do it and they are fairly specific to year, region of the country and a couple other things.