99 24 valve VP44 issue
01-18-2017, 02:03 PM
Registered User
Thread Starter
Join Date: Jan 2017
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
99 24 valve VP44 issue
I just replaced my VP44 on my 99 2500 24 valve replaced it now has a miss after it warms up no leaks and never has had a miss before. It has good fuel pressure but I did get a code for throttle body sensor?? What else can I check for?
01-18-2017, 11:10 PM
Join Date: Feb 2011
Location: Vanderpool Texas
Posts: 2,003
Likes: 0
Received 0 Likes
on
0 Posts
Why was the pump replaced? If it made metal could have a plugged injector.
01-20-2017, 05:54 PM
Registered User
Thread Starter
Join Date: Jan 2017
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
It was replaced because the old one went out, we bought a used one that was re manufactured and now once the truck warms up it has a miss. It doesn't do it until the truck is warm. We have 10-12 psi at the injection pump at all times even while it is missing.
01-20-2017, 09:03 PM
Join Date: Feb 2011
Location: Vanderpool Texas
Posts: 2,003
Likes: 0
Received 0 Likes
on
0 Posts
Do you have an aftermarket lift pump? Did you change fuel filter?
01-20-2017, 09:16 PM
Registered User
Thread Starter
Join Date: Jan 2017
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
Yes a raptor and yes changed the filter, blew out the lines, it was giving us a 1693 companion code, and the throttle position sensor
01-21-2017, 07:11 PM
Join Date: Feb 2011
Location: Vanderpool Texas
Posts: 2,003
Likes: 0
Received 0 Likes
on
0 Posts
I am thinking you may have an injector issue