I have recently put the new and improved dark purple cps in from IH. Anyone else run this? I am getting very bad milage, and wondering what everyone else is getting with it to see if its related. Thanks

 

i have never even heard of the purple cps. just blue black and gray. where did you get the info that purple was new and improved? link?

 

Its the dark grey blue purple whatever. Part number 1876736c91

 

I recently replaced the gray one in the F-450 with the dark one to see if the slight miss at idle would go away as reported by some. I couldn't believe the difference in how the truck runs now. Smooooth at idle and a little more pep. I've read where there can be issues with the light gray cps and cylinder #8. I still have the black one in the 01' Ex. I really haven't noticed much difference in mileage.

 

Yea mine seems smoother over the pos grey recall one I had. Its still in the glovebox just in case though

 

The 1876736c91 is for the 94-96 7.3L engines. It is also sold as Ford P/N F4TZ-12K073-C. Here a year ago or so it was supposed to be the "latest and greatest" one out there. I bought one and ran tests with it along with the OEM black one and the gray one. It did not impress me and has been in the glove-box since.

 

i just put 1 in Monday and it has made it run better. have not run out a tank to see mpg.

 

my vote is for the international black one !! ive had three others over the years just put that one in i think its a big differance smother idle quicker start and better low end power .

 

My truck had the lite grey CPS in when I bought it 3 years ago. I put the dark grey/purple CPS in last fall & I did notice a difference in how my truck Idled. According to the USPS tracking, today i'll be receiving a black CPS & my AE from Clay Maybe one of my 1st AE learning experiences will be running comparison test with all 3 CPS's ...

 

Ok maybe this is part of my milage problem. Got it scanned bank 1 cps error code. I made a more detailed post if you would like to take a look and offer any help. https://www.ford-trucks.com/forums/1...l#post10130064

Maybe the new cps is killing my milage? Should I toss the grey one back in on next fill up?

 

I would, it is simple to do and may be the cause. Like mentioned above, the OEM black CPS is really what these trucks prefer. Riffraff Diesel sells them, but is running out per his last post about them. I noticed a big MPG change after running the dark blue one when I put in the OEM black one.

 

I know it, if the black one is so good why cant they make a new one to the same specs that fails slowly like the grey ones not at once like the black ones

 

I remember you did the testing on the different cps units. Which one are you running in your truck now?

 

I run the black one, have two spare black ones along with a gray and dark blue one in the glove box! I (knock on wood) have never had a failure, so as long as I have the tools and spares, I will always run them.

 

Would ya be willing to loan me a black one to try for a bit and see if that doesnt fix my milage problem? One code I for was bank 1 cps error. Why the cps I got would only cause a code for 1 side im not sure