I have a 1995 CL613 with a E7 454 in it, VMac1..... I have a NEXIQ Pro-Link Plus scanner, can anyone tell me what cartridge number I need for this engine? I would also need to find one ofthese cartiages..... the engine WONT start unless you give it some throttle and when it idles once in a while it makes a LOUD knocking noise .....so bad that you think something is coming apart in the engine---- as soon as you give it ANY throttle is quits knocking and runs fine.......it went in a shop to get the oil changed and fuel filters changed, the shop claims they did nothing but the service. I did put a new foot throttle on it and installed a fuel pressure guage in dash because someone told me the throttle could be the fault or low fuel pressure ( fuel pressure is 20-30 ) Hopefully someone will know what cartridge I need or maybe they know whats causing these problems....THANKS