Which one is the EOT sensor?
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Junior User
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Which one is the EOT sensor?
Can anyone tell me where to find the EOT sensor on a 97 stroker? I was planning on putting the resistance mod on. I've got leftover resistors from doing the ICP mod, so would my 5.6k ohm resistor do the job or do i need to go down to 4k? Thanks
Post Fiend
Joined: Oct 2003
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From: MICHIGAN
It's sticking out of the back of the HPOP.
The HPOP is the square box on the top, front of the engine.
It has an oil pressure sensor sticking out of the top.
You will need to remove all the oil out of the HPOP if you plan on removing it
or you will have about a quart of oil drain down into the engine valley.
The HPOP is the square box on the top, front of the engine.
It has an oil pressure sensor sticking out of the top.
You will need to remove all the oil out of the HPOP if you plan on removing it
or you will have about a quart of oil drain down into the engine valley.
Post Fiend
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From: Silver Lake Dunes, MI
I wouldn't do it period! Uncontrolled/unknown injection timing change on a diesel.....NO THANKS!
Posting Guru
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I did it on my truck. I have an automatic and did it inline c00n's way. I wouldn't go any bigger than 4.7k just to be safe. Thats all I'm runnin and I'm more than happy with it. Idles a little higher to. I've been running this mod for a year with no problems. So you should be safe
Post Fiend
Joined: Oct 2003
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From: MICHIGAN
from the fuel tables that are written into PCM. I certainly wasn't endorsing the mod
when I gave the location info above. I believe the fuel tables need to be re-written
every time there has been a change made that affects fuel and timing.
That's why custom burned chips are so much better at making HP/TQ than these
'cheap' mods make....the fuel tables have been re-written.
I have been holding back from taking this stance due to the popularity of the
EOT mod, IPC mod or boost foolers. I didn't want to open up a can-o-worms...oppp's I just did. Flame on!
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Postmaster
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From: Levittown
Rod
IIRC 4.7K is in the area of 166/170*f.
I also opt out on EOT mods.
Bill
IIRC 4.7K is in the area of 166/170*f.
I also opt out on EOT mods.
Bill
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Post Fiend
Joined: Oct 2003
Posts: 5,903
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From: MICHIGAN
Bill, that sounds right to me:
3.84K = 176F
5.34K = 158F
7.55K = 140F
The OP wants to add a 5.6K resistor so the PCM will always think the engine oil is
150F?? Just guessing.
If the PCM thinks the EOT is less than 165F the idle will always be higher than normal and he would never be able to do a CCT.
Plus the GP's will not stay activated long enough for a cold start IMO.
3.84K = 176F
5.34K = 158F
7.55K = 140F
The OP wants to add a 5.6K resistor so the PCM will always think the engine oil is
150F?? Just guessing.
If the PCM thinks the EOT is less than 165F the idle will always be higher than normal and he would never be able to do a CCT.
Plus the GP's will not stay activated long enough for a cold start IMO.
Postmaster
Joined: Feb 2004
Posts: 3,266
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From: Levittown
Bill, that sounds right to me:
3.84K = 176F
5.34K = 158F
7.55K = 140F
The OP wants to add a 5.6K resistor so the PCM will always think the engine oil is
150F?? Just guessing.
If the PCM thinks the EOT is less than 165F the idle will always be higher than normal and he would never be able to do a CCT.
Plus the GP's will not stay activated long enough for a cold start IMO.
3.84K = 176F
5.34K = 158F
7.55K = 140F
The OP wants to add a 5.6K resistor so the PCM will always think the engine oil is
150F?? Just guessing.
If the PCM thinks the EOT is less than 165F the idle will always be higher than normal and he would never be able to do a CCT.
Plus the GP's will not stay activated long enough for a cold start IMO.
If a resistor is wired to replace the sensor it will allways see a set temp. (NFG!!!)
If its acrossed the sensor it will only set a min temp.
Example
5.34K would tell the PCM 158*F.
But now as oil temp rises the oem sensor will over ride the installed resistor.
Resistance decreases as oil temp increases.
The EOT has a major input in the fueling/timing tables.
Has a working range of -40 to 300
Bill
Postmaster
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From: Levittown
Here 2!!! 
The injection system is very primitive when it comes to emissions.
What is known as a EOT mod just opens a can of worms to other
issues.
Bill
The injection system is very primitive when it comes to emissions.
What is known as a EOT mod just opens a can of worms to other
issues.
Bill
Posting Guru
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From: Ft Scott
Bill do you remember Andrew (ASmith) from Ford-Diesel.com? He was the originator of the 10k mod, the EOT mod and the HX crossover. If you were to search the TDS archives from around 2000 there should be a bunch of posts by him and LarryS about the EOT mod and the problems it created, especially in auto trucks because certain resistors wouldn't let the TC lock up because the PCM thought the oil never got up to temp.
Postmaster
Joined: Feb 2004
Posts: 3,266
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From: Levittown
Bill do you remember Andrew (ASmith) from Ford-Diesel.com? He was the originator of the 10k mod, the EOT mod and the HX crossover. If you were to search the TDS archives from around 2000 there should be a bunch of posts by him and LarryS about the EOT mod and the problems it created, especially in auto trucks because certain resistors wouldn't let the TC lock up because the PCM thought the oil never got up to temp.
Also different issues per DPC Family.
Bill
Post Fiend
Joined: Apr 2004
Posts: 12,835
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From: Silver Lake Dunes, MI
Jim I didn't take your post as endorsing the mod. You just answered the question.
As far as 10K mods, EOT mods and what not just cause you truck is running fine with more power than before doesn't mean everything is on the up and up. When I removed my 10K mod I felt firmer shifts from the trans....Why?....Cause tricking the PCM makes it think there is less HP there than there really is, so the PCM doesn't take that into account when making decisions about other things such as transmission control and what not.
Feel free to do the mod but I will not recommend it. The EOT mod can change injection timing. How much? NO idea and nor does any one else. Too much change and you slowly kill your pistons and rods due to high cylinder pressures. Its possible for sure.
As far as 10K mods, EOT mods and what not just cause you truck is running fine with more power than before doesn't mean everything is on the up and up. When I removed my 10K mod I felt firmer shifts from the trans....Why?....Cause tricking the PCM makes it think there is less HP there than there really is, so the PCM doesn't take that into account when making decisions about other things such as transmission control and what not.
Feel free to do the mod but I will not recommend it. The EOT mod can change injection timing. How much? NO idea and nor does any one else. Too much change and you slowly kill your pistons and rods due to high cylinder pressures. Its possible for sure.