so my hpop went out dealer quoted me 1700 to replace so not an option but i need the truck on the 26 wouldn't be able to buy the Bosch 17° HPOP till the 24 so here is the question I know Clay and His crew are at Riffraff east. i would pay for overnight shipping on the 24 as soon as my paycheck hits at midnight but would i be able to get it on the 25 since the shipping slightly delayed due to the low staff id be pre shipping the old one as soon as i got it out of the truck thanks

 

How do you know your HPOP crapped out?

If you're sure it's gone south, you can always contact Joey at Terminator Engineering and get the T500 directly from him, since Clay is at RRE.

Stewart

 

Do you have a situation where a pimple-faced kid (who wasn't working on diesels when the last 7.3L was made) is saying "HPOP, yeah... that's it", or do you have a frazzled mechanic (with a row of hood-up diesels behind him) explaining how he arrived at that conclusion?

 

i had the dealer run their diagnostics test and they let me know the hpop went out which is why the truck wouldn't start cause the injector dont have enough pressurealso it explains the truck not giving any codes or the ses light isnt on

 

Or you blew a fuel bowl heater fuse or the CPS crapped out on you

 

Replaced the Cps All fuses are good

 

I try not to doubt anyone else's diagnostics, but what information did they give you to believe the HPOP is at fault? It is something that is a very rare failure...IPR is much more common for no or low oil pressure. Depending on the pressure that is being produced while viewed through live data can point to towards the underlying issue that may be the thought of a bad HPOP. But ultimately they can fail...they are just rare for complete failure.

 

Dang it. I was hoping it was something easy as one of those for you.

 

Fuji,


Did you ever figure out why the one all time hot post on the AIH has no power and see if the big terminal on the alternator had power?

Your truck will prob not run without that circuit working as it powers up more than just the aih.

DId this truck run fine before you changed the starter and its fender relay?

 

I'm sorry... I cry foul. The ICP sensor will register low Injector Control Pressure, throwing a code - P1212 to be specific. I have watched my dash and AE on a no-oil crank, and this is what takes place until it starts:

1. WTS clears and I turn key.
2. No oil pressure on the dash gauge as well as no ICP. IPR slowly climbs to 100%. While I'm cranking, the brake, battery, and oil pressure lamps are lit.
3. I'll see the oil pressure gauge on the dash climb and I stop cranking (let the IPR drop from 100%).
4. I crank again and the same lamps are lit, except the oil pressure light is out now. ICP jumps up above 500 PSI (IPR somewhere around 30%-65%) and vroom. The engine bucks a bit as the air works out of the oil... but the AE data slowly stabilizes.
5. After it starts, I check for codes and there's a big fat P1212 staring me in the face.

No codes? No start? That sounds more like an ICP than an HPOP (not ruling out other issues, though).

 

me in Montana, looking to buy a van in Maine. (yeah I know I shouldn't have)
but anyway it had a brake issue. owner took it to a local dealer.

I talked to the dealer and "there guys". was told I needed a new vacum pump. this is after the previous owner installed a brake booster that he bought from a forum member (different forum) installed and still had brake issues.

so I agreed to pay for a new pump so I would have brakes on my trip home. issue DIDN"T go away. well I was already in route to fly out there . previous owner said it was new in the box so I dont blame him.

short shorty was I didn't need a new pump. I drove the van 2500 miles and only blew through one stop sign getting off the hwy in Mich.

I get home and install a new booster and low and behold my brakes worked past one pump on them.

even tried to get an oil change done at one dealer and was turned away cause its to tall....wth

drove down the road to a smaller dealer was happy to oblige and even did the CPS recall. Much better customer service.

just thought I would share.

good luck either way

 

i dont think the hpop is bad sounds more likely what tugly says.
although i had a hpop die cut the truck off never would start back, put antoher pump i had on it and it is running great, i sent Joey the bad pump and he said the blow off valve was bad, so they can die.

 

my van has 332k and it looked like the original. (looked and a guess of course)

curious how many miles on your truck? not that matters cause when they go they go

 

the pump i had died was 195k.

 

Over the years we've had repair shops report bad High Pressure Oil Pumps on dozens of occasions. In all but two cases it was a faulty diagnosis. Usually the actual fault is IPR or ICP related.

However, sometimes the pump actually does fail. In both cases a lab report will tell the story. For $25, I always have the shop send in for a lab report before I authorize an HPOP replacement. Two weeks ago one of our GMC 6500 trucks was stalling when warm and would not re-start (CAT engine with HEUI injection system). The repair shop said the HPOP was bad so I asked for an oil sample. The sample confirmed a bad HPOP. In particular the PQ Index was sky high. If the lab you use looks at particle size (not just PPM count) then it's a great tool to validate suspected pump failures.

EDIT:
In the case of the GMC, we know why the pump failed. About two months ago that truck was making it's way to Phoenix from California and the front crank seal started to work it's way out. A small leak at first but eventually it progressed to the point where the driver had to add a couple of gallons of oil. At that point the engine ran much smoother and engine power was restored. When it arrived in Phoenix we had the seal replaced but there must have been some HPOP damage when the oil supply was reduced. We are trying to get the HPOP covered under warranty since the engine was just overhauled but so far it's been a battle. The shop says the original HPOP was reused so it's failure is a coincidence....I think it's a direct result of running low on oil. Not sure where we are going to end up on this one but I know we won't be using that shop for engine repairs in the future.