7.3 unreliable recently

[Baker42]

Jacked up truck added two quarts. Low oil pressure was good truck still died. Im kind of relieved. I did not feel like pulling motor in December. Got my ford mechanic coming out to run some tests. I just hope he can pull something because I have no check engine light

 

[woodduck97]

What is your oil temp once warmed up and cuts off? Have you tried unplugging your ICP sensor after it cuts off? What is your duty cycle when it cuts off? Have you checked them? Also what does haveing to pull the motor do with cutting off?

 

[Wackerjr]

someone said it aint a pickup tube

Mechanic aint going to pull anything either.... IF you had a diagnostic tool he could pull the ipr and put it in the pump and it will run to full pressure... my guess is internal pump failure....with everything you have posted.

orings etc.... if they were done 2 years ago, then I highly doubt they are bad.... unless you recently swapped them... then you need to verify that they are not puking oil around them....

 

[Tom S]

This may help you. http://powerstrokearmy.com/forums/showthread.php?t=1818

I would tend to suspect the HPOP has worn out. I would start in that area. You can pressure check the heads to rule that part out. If you have access to a know good spare HPOP I would swap it out as that is not too hard to do.

 

[Wackerjr]

What is your oil temp once warmed up and cuts off? Have you tried unplugging your ICP sensor after it cuts off? What is your duty cycle when it cuts off? Have you checked them? Also what does haveing to pull the motor do with cutting off?

ICP sensor wont do a damn thing... if it sees a problem they will default... and especially oil temps will have nothing to do with a ICP sensor.

I am going to put it out there....

Pressure is good when cold, d/c is a bit more than usual.... as truck gets warm oil temp rising, the d/c starts to slowly increase, until it hits whatever max D/C the tuner is commanded then pressure slowly starts to fall until the truck shuts off....

 

[Baker42]

Injector o rings were just done again two days ago 4 out of 8 oil rings were bad (blue upper)3 on passenger head 1 on driver. I have disconnected ICP after stall to no effect. maybe I need to invest in scan tool.Pickup requires pulling motor (to do it right)oil temp unknown I only have the stock gauges besides autometer HPOP BOOST and EGT.Replacing o rings helped nothing.Thats why I feel like I gave up my good HPOP only to pay 600 for POS. Now let me ask if temperature would affect IPR:shrug:

 

[onebad7.3]

How long ago did you install the HPOP? How many miles on it?

 

[woodduck97]

ICP sensor wont do a damn thing... if it sees a problem they will default... and especially oil temps will have nothing to do with a ICP sensor.

I am going to put it out there....

Pressure is good when cold, d/c is a bit more than usual.... as truck gets warm oil temp rising, the d/c starts to slowly increase, until it hits whatever max D/C the tuner is commanded then pressure slowly starts to fall until the truck shuts off....

Wow your ****ing awesome. Just trying to help but when dick wads like you come around turn people away. I'm out looks like you got this thread under control ass ****. :flipa:

 

[Baker42]

I dont want a pissing match just some info my Adrenaline has about 55K. Seems like it should last as long as a stock International. Also have recently pulled my chip thinking that might be the problem and i do not plan on reinstalling it until I can get this resolved

 

[onebad7.3]

One of your buddies wouldn't have an ipr you could borrow? Interesting to put a different one on and see if it changes anything, if not, i'd be looking at the pump

 

[Baker42]

I know a friend with a 97 going to call him and try Frankenstein his IPR and if it doesnt work HPOP see what happens

 

[Wackerjr]

Wow your ****ing awesome. Just trying to help but when dick wads like you come around turn people away. I'm out looks like you got this thread under control ass ****. :flipa:

Wahhh got your panties in a wad....

Just hate to see a guy spend his time looking where he will be wasting his time.... like changing oil viscosities.....

He has oil blowing by something (on the HPO side), be it he screwed up installing injectors and has stacked crush washers, has ****ty orings on his injectors, ****ty orings on IPR, or has a pump with a scored revolver....or something along those lines.

plain and simple.

sorry I don't have 6000 IDE posts though so carry on with 4 weeks of looking and throwing parts.... or be driving by the end of the night.....

I am out... I wonder why I try to help people anymore.

 

[Wackerjr]

and yes oil temp will cause problems, when it is thick it does not blow through the orings as bad... gets hot and thin then can't make pressure anymore, and runs freely through wherever the problem is... see post above.

 

[Baker42]

This isnt my first rodeo partner. Ive been wrenching on 7.3s,5.9sand 6.6s for a long time just dont have a scanner imp:

 

[Tom S]

Wow your ****ing awesome. Just trying to help but when dick wads like you come around turn people away. I'm out looks like you got this thread under control ass ****. :flipa:

This ends right now! There was nothing posted to warrant that.

 

[Tom S]

Just hate to see a guy spend his time looking where he will be wasting his time.... like changing oil viscosities.....

He has oil blowing by something (on the HPO side), be it he screwed up installing injectors and has stacked crush washers, has ****ty orings on his injectors, ****ty orings on IPR, or has a pump with a scored revolver....or something along those lines.

plain and simple.

I totally agree that this is the likey areas of concern. More oil escapes when it is hot and thin causing the stalling. One other place you can take a peak is to look when the valve covers are off to see if you can see where the oil is seaping out from if the problem is in that area.

Tom

 

[Fly By Night]

Have you tried a known goot HPOP? Just because yours shouldn't be worn out, doesn't mean its not

 

[Baker42]

No but Ill be doing that in the next couple days. Also has any one heard of Aeroforce intercepter scan gauge? My buddy was just telling me about it and sounds cool

 

[onebad7.3]

No but Ill be doing that in the next couple days. Also has any one heard of Aeroforce intercepter scan gauge? My buddy was just telling me about it and sounds cool

Yes, I have one.

 

[Tom S]

No but Ill be doing that in the next couple days. Also has any one heard of Aeroforce intercepter scan gauge? My buddy was just telling me about it and sounds cool

Not a total replacement for a scan tool but very very handy for a have with you all the time one.