Originally Posted by oledoc2u

Wow....why try to look at other problems when the symptoms are that of a bad CPS. The problem with aftermarket parts are most aren't up to factory specs. Other makes and models have CPS problems as well. Just put one in my Tahoe although a '99, they will finally wear out. Bosch parts work in these cars, other do not. Some one might get lucky, and an aftermarket may work, but not often, and not worth the risk. CPS problems can be hard starting, rough idle, making it seem the throttle isn't responding. Dying for no reason. If the throttle truly isn't working, then it could be the throttle position sensor. But it ran for a few weeks, so I doubt that to be an issue. Believe me, there are days I wish for a car without any sensors or fuel injection, or anything other than old fashion mechanical. Then, I remember, replacing points, accelerator pumps, plugs, coils, voltage regulators, and such, so as they say, **** happens.....

Originally Posted by JHM2K

Worth noting, the guy I was speaking with at Mercedes yesterday was saying that there was a recall on the OEM CPS recently.... so, if you bought a part two years ago, there's a good chance it's a dud (or will fail just like the other one did). He said unfortunately, many dealers liquidated their old stock to smaller vendors, so the "genuine" articles we're buying on eBay may not be the latest & greatest.

This was all discussed as I was trying to help him diagnose the idle issue on the car I just sold... When I was telling him everything I replaced, he asked about the CPS. I told him I changed it in May, he said "where did you get it?" and I told him the forum. That's when he shared the above information with me.

Take it with a grain of salt... but in this case, buy the current-level stock from a dealership you trust... not eBay.

Cheers,

Originally Posted by RED DOG

WOW that's good to know. I have a "spare" Bosch CPS sitting in the box as a "just in case mine fails" part. It is likely one of those recalled units. I will look into that recall and try to get some details. Maybe Mercedes will swap out this part for the upgraded part??

Originally Posted by oledoc2u

Never buy electronic parts on Ebay... it's usually someone's discounted out dated parts someone has liquidated. Or, worse yet, Chinese knock offs. Better to go direct to a parts source even if they have to order it...

Originally Posted by Davidm781

Thanks for all the comments and answers. Going to start with the CPS today found a Bosch one locally. Also going to switch out the battery I have an optima laying around. Also going to check for a sprit booster and a vacum leak let's see if one of these do not correct the issue and go from there. If not I will provably try and contact rob from needswings and see if I chat setup an appointment to tow the car to him.

Originally Posted by RED DOG

Good Luck . . . Rob at Needswings would certainly be the man who could get your Crossfire back on track . . .

Originally Posted by Davidm781

So I've replaced the battery.
New sensor for the CPS (Bosch)
New camshaft sensor (not Bosch) plan on replacing again.
Checked the gas pedal.

Going to try the maf sensor and the catch can if I can figure that out. I have no idea about to just trade this sucker going to try to contacting rob at needswings after that it's getting traded in.