Will Not Start- VP44 Dead? Code P1688, P1693, P0237

[swhicks76]

First off...it is an honor and great relief to have access to this site! Thanks to all whohave made it possible! :thumbup2: I have owned this truck for the past 3 years (35K miles).It is my first Diesel- All this help is very welcome!Sadness- Drove home, low speed cool down last 1/2 mile, parked, slept, woke...same as every return trip from town- but this time- my truck would not start the next morning! I admit I forgot to wait for the heaters the first crank, buteven after several attempts "post heater warm up"- it still would/will not start.Plugged in the block heater, charged the batteries up- gave it another shot...nope...nada! So I went for the OBDII and came up with...P1688 - P1693 - P0237Did I bust it? By not waiting for the heaters the first time around?

[Mopar1973Man]

P1688 - Death Code for the Bosch VP44 Injection pump electronic are brain dead. Replacement is required. http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/59-obdii-error-codes/227-p1688-internal-fuel-injection-pump-failure P0237 - MAP sensor voltage is low. http://articles.mopar1973man.com/2nd-generation-24v-dodge-cummins/59-obdii-error-codes/167-p0237-map-sensor-voltage-too-low As for the P0237 do the diagnostic on it first. Also if you got any modules hooked to the MAP sensor unplug them at re-test.

[swhicks76]

Thanks Mike-

I was dreading making the call on this...I did read the articles, but

guess I needed some confirmation- to deal with the sickies!

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Tips on recent VP44 sale prices?!

Any Suggestions?

Cheers

[flagmanruss]

I don't see in your signature... or did I miss it? What are you running for a lift (fuel) pump? Yes, your VP44 is toast but before you put a new IP on there, be sure you have enough fuel pressure.

[swhicks76]

My Signature is up on my screen...not sure why it is blocked for you?

Good advise...I am installing a DTT Assassin fuel pump- or at least that is the plan-

Just hunting around for a pre-filter to install before the whole new set up. I would

also like to run a Big Line Kit while I am at it.

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I am looking for a filter set up...with the 2 micron filtering suggested

in one of Mike's articles-

Any suggestions or links to others Successfully-Sweet Setups?

Still looking for a sweet deal on I-pumps- any ideas?

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Thanks for the offer Mike-

My trailer would have to be pulled with my Dirt-Bike...

Then again you are south of me...maybe I'll just cost!

[swhicks76]

Bump...any Ideas for a pre filter set up...something that will get 2-3 micron...I want to set it up before my pumps.I will be installing an Assassin Fuel Pumpfrom DTT and I want to protect it and thenew Injection Pump I am also installing.

[rancherman]

Bump... any Ideas for a pre filter set up... something that will get 2-3 micron... I want to set it up before my pumps. I will be installing an Assassin Fuel Pump from DTT and I want to protect it and the new Injection Pump I am also installing.

usually, most lp's can handle the fuel straight from the tank. I can understand why you would want a prefilter in front of your LP; to protect it as well. It's a noble idea, but is inherent problem too! Sucking fuel with a high performance lp through a 'tight' filter isn't the best scenario... In fact, pulling fuel through any filter is problematic. a good screen is normally all that's needed to protect a lift pump. My main problem with running a Pre-filter in front of a pump is cavitation, and increased jelling in very cold weather. I'd just run your good filter(S) after your lp.

[Mopar1973Man]

That's why AirDog's have a 100 micron or so prefilter and not 2-3 micron before the pump. It to filter off the large stuff before entering the pump and protect it from lock ups from large debris.