I have a 97 Grand cherokee limited. V6 auto 2x4... only problem i have is maybe every other day the check engine light comes on and when it does the car runs a lot slower. I checked the air filter, seems new, turned the spark plug wires a little, and put in shell gas, still does it though... Can someone please help.

 

Post code please, advance will scan for free. Doubt u will get many if any responses with out this info, could be a mililon things

 

ok the code is p0748.. says pressure control silinoid ????