Airdog throwing check engine light?! - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 7 (permalink) Old 11-05-2010, 10:18 PM Thread Starter
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Question Airdog throwing check engine light?!

I just installed an Airdog II (DF-165) on my 01' Cummins. Now my check engine light is on. It throws the read out codes P-0230 (Fuel Pump Primary Circuit Malfunction) and Code P-0252 Injection Pump Fuel Metering Control "A" Range/Performance (Cam, Rotor, Injector)). Does anybody have any idea why this would be?!

I've checked for air in the lines.
The fuel pressure is 12psi.
The original lift pump is sitting on my tail gate, however there are 2 electrical connections left over. 1, is the H2O sensor 2, Lift pump power supply.

I'm perplexed. HELP!

2001 24v 5.9 Short Bed Quad Cab 103k (08/10)
ATS 5 Star TC, Performance Stage 4 TransDeep Sump Trans Pan
EGT & Trans Temp
Quadzilla Adrenaline
BHAF via AFE - Silencer Ring Removed
4" MBRP Turbo Back
02' Mirrors
12k Regular Tow-er
My TC will slow me from 55mph to 45mph down Monteagle towing 12klbs with no brakes applied. How bout' yours?
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post #2 of 7 (permalink) Old 11-06-2010, 12:50 PM
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The fuel pressure is only 12psi with that pump? Seems pretty low to me. Was getting 17+ with the FP150.

P-0230 - probably has to do with the stock lift pump being disconnected.

At least on the big trucks with an ISX Cummins, if the water sensor is disconnected, it will throw the check eng light. As will low fuel pressure.

I never removed the stock fuel filter housing or lift pump. Both are still plugged in, but neither one is working.

As for the P-0252, fuel inj pump might have finally decided to bite the big one? Mine hasn't thrown any codes, but just limping along.

"Some people are educated beyond their intelligence."

'93 W350 CC, LE, 5spd, HTT modded H1C, 4" DE

Sold- '99 3500 Q/C, SO CTD, 4x4, 5spd.

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'92 W250, LE, CC, CTD w/ tweaked pump (SOLD)


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post #3 of 7 (permalink) Old 11-07-2010, 08:04 PM Thread Starter
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Talking Thanks but here's the update.

The DF-165 has an adjustable regulator built into the side of the pump . I used a gauge to dial it to 12psi. Factory, the pump was at 16psi and after reading I dialed it back to 12psi to be safe. At WOT, it dropped .5psi, so I know I'm safe there.

The code that said "Metering Block Malfunction" was probably due to excess fuel pressure that it could not get rid of. Honestly, I paniced at first. The instructions that I got via phone AND written were all jacked up. I was told that the DF-165 recycles the fuel IN THE PUMP and that there was no need for a return line to the tank. This (I now know) was absolutely the wrong thing to do and after 5 gallons of wasted diesel on the shop floor, everything was ok.

After all that, I drove it for 20mins, went to fill up the tank, and after restarting the idiot lights went off. So far I've drven it 400 miles with no issues, other than a leak (hemorage) of diesel from a fitting. That is the only bug that I had to work on. I looked at it this wat though, as much fuel covered the underside, I won't have to worry about road salt or chemicals eating it this winter. =)

2001 24v 5.9 Short Bed Quad Cab 103k (08/10)
ATS 5 Star TC, Performance Stage 4 TransDeep Sump Trans Pan
EGT & Trans Temp
Quadzilla Adrenaline
BHAF via AFE - Silencer Ring Removed
4" MBRP Turbo Back
02' Mirrors
12k Regular Tow-er
My TC will slow me from 55mph to 45mph down Monteagle towing 12klbs with no brakes applied. How bout' yours?

Last edited by Johnboy11-1; 11-07-2010 at 08:07 PM. Reason: spelling
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post #4 of 7 (permalink) Old 11-07-2010, 10:45 PM
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Programming must be a bit different on the newer ones then. Never saw a CEL with 19psi on my truck.

I saw that the ADII recycles it in-pump. Wish mine did. Would be nice to eliminate the extra return line. Oh well. Keeps the fuel gelling without additives.

"Some people are educated beyond their intelligence."

'93 W350 CC, LE, 5spd, HTT modded H1C, 4" DE

Sold- '99 3500 Q/C, SO CTD, 4x4, 5spd.

Traded off- '97 3500 C/C, 4x4, CTD

'92 W250, LE, CC, CTD w/ tweaked pump (SOLD)


"Obama = Hoax and Chains"

If Obama is the answer, it must have been a stupid question.
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post #5 of 7 (permalink) Old 11-08-2010, 04:35 PM
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Quote:
Originally Posted by Johnboy11-1 View Post
--------------------------------------------------------------------------------
The DF-165 has an adjustable regulator built into the side of the pump . I used a gauge to dial it to 12psi. Factory, the pump was at 16psi and after reading I dialed it back to 12psi to be safe. At WOT, it dropped .5psi, so I know I'm safe there.
My FASS 150/150 is pushing around 20PSI (for almost 3 years now) and I haven't had any issues since my last VP install (2 years ago).

If I were you, I'd consider bumping the fuel pressure up to at least 16PSI where it was from factory. I've heard you don't want more than 20PSI, but you really don't want to run below 10PSI either...Just my .02

Greg
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Bro's Trucks- 97 Dodge Ram 2500 5spd 12V...DDP 90hp Injectors...Half-Cut DV's..0 Plate...starwheel turned..kdp & 5th gear fix...17.5deg timing...SB Feramic 13" clutch

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post #6 of 7 (permalink) Old 11-16-2010, 02:02 AM
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If I were you, I'd consider bumping the fuel pressure up to at least 16PSI where it was from factory. I've heard you don't want more than 20PSI, but you really don't want to run below 10PSI either...Just my .02[/QUOTE]


I agree!!!!! my FASS 95GPH pump is 16 at idle and doesn't go below 11 at full throttle. Never had any codes.
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post #7 of 7 (permalink) Old 11-23-2010, 01:00 AM Thread Starter
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So here's an update and a WTFN? So I reset the regulator at 18psi at idle per so many reccomendations. If a go to take off with the trailer, the pressure remains the same untill 3rd gear/TC lock up (automatic trans), 15-1800rpm or untill boost builds(?). Then the pressure pegs out on the fuel gauge @ 28 psi plus. I was startled at first. I stopped the truck and pulled over. Pressure dropped back to 18psi immediately. I listened for any changes, noises anything at all that would indicate problems. I drove it for 3k plus like this with no issues. I also noticed it rises slightly without the trailer on 19-23psi.

I was pressed for time before a very long 3k road trip with a 10-12k trailer and I couldn't wait any longer to figure the reason why. To understand to 3000 mile trip I just did is to watch National Lampoons-Diesel Vacation starring Clark Griswold himself.

2001 24v 5.9 Short Bed Quad Cab 103k (08/10)
ATS 5 Star TC, Performance Stage 4 TransDeep Sump Trans Pan
EGT & Trans Temp
Quadzilla Adrenaline
BHAF via AFE - Silencer Ring Removed
4" MBRP Turbo Back
02' Mirrors
12k Regular Tow-er
My TC will slow me from 55mph to 45mph down Monteagle towing 12klbs with no brakes applied. How bout' yours?
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