I have written many times, now my problem is happing more often. It gives a code, no comm. To the ecm and pump. I my stock life pump is fine, I have BD lift pump, always have good psi. The truck runs fine when she starts, but sometime she just turns over with no start, but if I come back to her the next day she will take awhile but will always fire. People tell me get a new vp, I would if the truck was a paper weight, but she run fine when she fires. It has a new ecm, does any electronic, sensors, control the truck to start. Could be something heating up, any help would be good

Brian Govednik

 

You have written what many times?

 

This problem has been going on for about two years. I have posted this same problem in the past.

 

Was it under a diffrent user? Your profile shows 2 posts, both in this thread.

Have you checked your fuel system for leaks? Sounds like you might be getting some air in the system somewhere.

 

Are you getting fuel to your injectors when you're having the no start problem?

 

It was under a different user name, I believe. When she does not start, i will check if im getting fuel to my injectors, would the vp computer control the fuel to the vp. I had my fuel system, tested, no air leaks, replaced the fuel lines with rubber ones from the filter to the new BD fuel pump. Last year I put a clear tube between the VP and the filter to see if I do get air bubbles, which I have none. I been reading Blue chip today, I fear always it could be computer that sit onto of my vp44, from there web sit” The computer gets intermittent because of too many heat cycles. When you shut the truck off the latent heat in the engine heats up the computer and after many heat cycles the solder that holds the electrical components to the circuit board of the computer becomes crystalline and no longer makes a good electrical connection, causing intermittent drivability issues, such as "dead pedal", intermittent hard cold start, intermittent hard hot start and white smoke. These drivability issues usually get so bad that the customer finally takes the truck in for diagnosis, only to find none of these issues create a diagnostic code or a so called DTC. This makes it hard for the inexperienced mechanic to advise the customer honestly or accurately.” I don’t have dead pedal, but I do have hard hot starting. Im trying to find people who had this problem, the only code in 1689, I will double check that tomorrow to see if it’s the same code. My next question, I been reading blue chip website, I see vp44 for sale for around 1100 give or take, rebuild. Is that with a new computer, sound like they only rebuild the pump and not do anything to the computer? So if im right, you get a new rebuild pump, but could get a computer that been in a truck for 10 year and many miles. Does any one know if this is true. I will call Blue chip tomorrow to see if that have some answers for me.

Thanks for the help

 

All Bosch rebuilt pumps are built to Bosch specifications which include all the updates including those to the electronics. No need to pay extra for something you can get elsewhere for less. The only caution I would add is to make sure you ask the pump shop if they will send you a pump rebuilt in their shop and not one that comes from Czechoslovakia.

 

thank you for the info about Bosch pumps

 

You're welcome. Let us know how it turns out.

 

Has any one out there had problems dealing with the electronics on the vp44, only problem is hard starting, very intermittent problem, but when she does start, she drive fine.

thanks

 

when it goes , you're done
if the fuel pump control module fails, the code is 1693, 1688, 1689,
if the only code you see is 1693, you need to hook up a scanner to pull the rest of them. 1693 is a companion code that tells you there is a problem.... here's a link that may be useful
http://www.idahobombersforum.com/tip...rror_codes.htm

 

I had the same problem awhile back and for the life of me couldnt figure it out would run fine once crunk but getting it to bust off was a chore, bout the only way i could get it to fire was use ether and that isnt good for one.

i took it to the dealership and they kept it for 2 days and everytime they tried to crank it it would fire right up for them, they thought i was crazy.
i thought it was in the wiring but later on i came to find out that i had air in the system and when they checked the fuel pres i guess they got it all out because every since then it fires right up no problems.

when you do figure it out curious to know what you done to fix it.

Good luck!

 

I will keep you guys posted, I going to get a scanner tool tomorrow to see if it is throwing the same code out.

 

i would check the rubber lines from the lift pump to the injection pump, theres only 2, and dodge puts stupied little clamps on them that dont hold anything, sounds like its gettin air after is sits for a while, id change the clamps to some good ones, easy thing to try elimate,

 

I have all new rubber line from the BD pump to the filter. I know its not air.

thanks