Which one is the EOT sensor?
#1
10-20-2008, 03:16 PM
#2
10-20-2008, 04:14 PM
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.
#4
10-20-2008, 09:41 PM
#5
10-21-2008, 08:22 AM
#7
10-21-2008, 08:59 AM
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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#8
10-21-2008, 09:06 AM
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#9
10-21-2008, 09:40 AM
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.
#10
10-21-2008, 10:03 AM
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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
#12
10-21-2008, 11:12 AM
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#13
10-21-2008, 12:17 PM
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.
#14
10-21-2008, 04:36 PM
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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
#15
10-21-2008, 05:58 PM
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.