jasvan10

I was just reading the AD installation guide and everything looks like its hooked up correct ,I also am looking for something thats simple since it is very excessive since install I was just trying to do a little pre maintenace and created a big problem

First I like to thank you for the responses ,I dont have the fuel pressure guage installed yet it is in trnsit as we speak I have owned this truck now for almost 14 years now and never had one, did not know of how important it is ,as for how it is wired ,the power source comes from the alternator and I assume that it is hooked into the ecm ,I never had this issue this severe till air dog install

I am having a longer cranking issuse then i ever experienced ,I just had a airdog installed and now have excessive cranking ,now I have exchange a few sentences with one of the mopar members here and this is what I just did, 1st> the truck sat all night, went out unpluged the airdog turned key to start and it fired up about a 1 second or less crank,turned it off right away, 2nd> I plugged the airdog back in and turned the key to start without waiting for pump to prime it took about 1 1/2 seconds to crank over, 3rd my truck is sitting in a driveway with the front faceing up hill when it started the 1st and 2nd time I drove it for about 13 miles and about 30 minutes 5 miles freeway the rest stop and go lights with the truck warmed up setting in driveway front end up again I shut it off and let set for about 15 minutes ,4th I went back outside and put the key in and turned to on position let airdog prime when it shut off I turned key to start it and it cranked for about 3 to 4 seconds before starting left it running for about 6 minutes turned it off ,5th I let truck set for about 25 to 30 minutes I unplugged airdog again turned key to start position and it fired right up 1 second or less.:banghead:

thanks ,are they all bench tested and do they all come with the new updated computer ,thanks for the info I do believe I am capable of changing the vp but not without alot of input from guys like MIke and you or others that have done it before I just want to know before I start looking into a replacement if it sounds like its going bad or is there other probs that I can look at to narrow it down is there a test that I can do with vp installed that will let me know that it is a good candidate for replacement it has 152,plus on it now and its the original and I am the original owner 2wd 5 speed manual dually 3500 quad cab 24v ,thanks again i will check out the web site

Yes , its a long trip indeed but I here it a nice place to visit ,even though I had a issue with longer cranking before the airdog install when engine is hot ? And it got worse when the airdog was installed ! Now I am hereing by the folks that installed the airdog ,thats the vp44 that needs replacing and now that the cummins folks seen it it started to be some other issue and not the VP and now that they charged 5 hundies in looking at it they they are stumped, one of the techs says it can only be the VP, is there any other way that a guy like myself with very little diesel knowledge do without bringing it in to a dealer its a $2100.00 fix at the cummins dealer using there reman injection pump ,do they go through the pumps or do they have them rebuilt by a a bosch certified tec and bench test it and replace all the componets includeing the computer,wow thats alot ,sorry and only give a 6 month warrenty .

I was referred to visit this site by dripely and I was reading all the inputs on the vp44, I by no means claim to be a diesel mechanic but I am intriguied by all the theories being brainstormed here , I just installed a AIRDOG ll on my 98 24v and am experiencing longer cranks than I am used to, prior to the install I experienced the longer cranks only a few times when engine is warm after a run to work stop and get back in , Now it cranks long 2 to 4 seconds or longer wont start then try again then it will start ,I had cummins check fuel pressures and the found it had 25 psi going to the vp44 they called airdog and told them what was going on and they said it was ok the pump is only spec for I think 18psi so they cummins cut the spring down per airdog tch says its common and adjusted airdog ll to reach 15 to 16 psi they say all is good but I am still having long cranks I do not have my gauge yet its on the way .Airdog says when starting dont wait till pump stops just get in and start it ,that works some of the time . any feed back :banghead: would be appreciated thanks