Seems to lose half the engine - Diesel Bombers



Ford Powerstroke 99-03 7.3L Discussion of 99-03 7.3 Liter Ford Powerstroke Turbo Diesels

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Old 01-18-2018, 08:03 PM
Diesel Fan
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Join Date: Jan 2011
Location: Apple Valley, CA
Posts: 12
Default Seems to lose half the engine

2001 E350 PSD
Acquired in 2008
Removed fuel filter from engine. Have filters in front of and after pump on frame. Built regulated return fuel supply. 60# at regulator.
Replaced flex oil lines, added crossover line.
Shimmed and safety wired under-valve-cover connectors.
Added pigtails and re-bundled harness so that connectors can be brought out the front.
All that was completed several years ago.

Symptom: check engine light and serious loss of power.
Turn key off, restart, engine runs OK, light out.

It has now happened about six times, always on smooth road, no correlation with road shock.

P1316 IDM codes detected

KOEO: P0267 Cylinder 3 injector circuit low.
Says fault must be present to be found. But engine is running OK at that point.

KOEO buzz: P0267 Cylinder 3 injector circuit low.

KOER balance: P0269 Cylinder 3 contrib/balance fault

And all that was with the engine running OK.

All injector resistance very consistent: 3.5 Ohm cold, 4.0 Ohm hot - just a random meter, nothing special.
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  #2  
Old 03-28-2018, 11:29 PM
Diesel Fan
 
Join Date: Jan 2013
Location: simi valley CA
Posts: 49
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Man just because an injector ohms out dont mean its good. I chased my tail once on an identical situation as you. IDM code and inj code, The owner let a hack "work" on his truck, he ohmed each injector by piercing the plastic on each wire with a tester at the uvhc and at the IDM !!!. I replaces uvhc pigtails and still had problem, after testing wiring from IDM to uvhc, I narrowed it down to bad IDM or bad injector. I put in a new injector and it cured it, mind you it ohmed out well.
Later that night i was messing with it on my patio having a cigar and was able to get it to dead short 0.00 ohms! by moving a pin in one direction the injector would dead short but a quick ohm test would show good. Id start with that injector, Good luck.
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Old 03-29-2018, 11:12 AM
Diesel Fan
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Join Date: Jan 2011
Location: Apple Valley, CA
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Quote:
Originally Posted by wannadrag View Post
Man just because an injector ohms out dont mean its good.
If this was an early pickup I would have long ago swapped an another injector with #3 to see if the problem also swapped. But in a van it is a half day to change gaskets. I am temped to replace the injectors just because they have been there for an unknown time.

But, would/could a single, momentary, injector fault cause the latching off of half the engine? The engine never has a miss fire. I have lost one injector so I know what that feels like. Now it either runs fine or as tho it lost half the engine, and then fully recovers with a restart.
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Old 03-29-2018, 11:34 AM
Diesel Fan
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Join Date: Jan 2011
Location: Apple Valley, CA
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Any suggestions for replacement injectors?
2001 PSD
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  #5  
Old 05-13-2018, 07:13 PM
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Join Date: Sep 2009
Location: nebraska
Posts: 29
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full force diesel sells a quality product.
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