P1691????????

jktcummins

24v GOD!!!! HAHAHA
Joined
Apr 1, 2007
Messages
2,450
Fuel Injection Pump Controller Calibration Failure


what does this mean?????
 
ummmmm its the electronics on the vp44 so fixable im not shure.... it can be done i just have no idea how
 
Quote from MRowsh on Diesel Ram Forums.

I had bought a HPVP44 from Industrial Injection. It worked about 10 months only. After 10 months I started having problems. At last, I had to take the truck to the best Diesel Mechanic I could trust. This fine professional Diesel mechanic took the VP apart and noticed that:

"The magnetic pickup that determines the advance timing , both screws fell out of the pickup . Why I have NO idea. The pickup inside is ground up too as it was riding on the tone ring . The pump is worthless only good as a core. "



Here go's


The first pic is the screw or one of two that holds the magnetic pickup to the timing ring inside the pump.

Picture086.jpg


Next is the pickup notice the two mounting holes.


Picture088-1.jpg

This pics illustrates the mounting point on the timing ring. I found only one screw the rest was chewed up by the internals.

Picture092.jpg

In this pic you can not see very well but the inside of the case I found a perfect round goug where the missing screw had bound up against the case and lft a imprint.


Picture097-1.jpg
If you look closely the inlet fuel line accually cools the bottom of the electronics of the mother board before it enters the pump . Now you can see why it is crucial to have a good working LP pump such as a FASS .


These screws should have had some sort of loctite .


I figured the some people might not be a member of Diesel Ram Forums and decided to load this up. Very good info.
 
Hey DR is free too.

Just so everyone unerstands this is no attemp to flame anyones products, just what I found as to what the problem was.

Draw your own conclusions.
 
I was just trying to keep all the finger pointing out so i might not get in trouble with II since i am in a round about way associated with Industrial.
 
Well according to II the 1691 was from the pump trying to calibrate itself while the diapharm was cracked. So it was throwing the code. After about $200 its headed home with a new diaphram.
 
Put the pump on tonight and guess what still cutting fuel. I even installed some jammer 4 injectors to try and get some descent milage for a big haul i have to do this weekend. Its still cutting fuel in the 3500rpm range.
 
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