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Oct 31, 2009 | 01:07 PM

#16

Hussler

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From: Medford Oregon

EOT sensor resistance should be the following ...

0 F = 250K
32 F = 98K
50 F = 59K
----------
160 F = 5.32K
170 F = 4.48K
180 F = 3.75K
190 F = 3.17K

Any radio shack cheap 1/2 watt would work.

Oct 31, 2009 | 07:11 PM

#17

F350-6

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From: Texas

Quote:

Originally Posted by muddyforeman

Blowby, A constant push of smoke coming from the dipstick tube. Looks like a fog machine out of the dipstick tube. flipped the oil cap, doesn't blow it off, just kinda vibrates there with the motor.

This is great news. Now ignore the smoke as it has nothing to do with your issues. Let us know what you find on the cold CCT once you get the resistor wired in. You might as well write down the rotational velocity numbers too.

Oct 31, 2009 | 09:30 PM

#18

muddyforeman

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From: london KY

Thanks for all the help so far, I'll pick up a resistor at the shak tommorrow after church and check it out as I have to return the Genisys monday

.

Ill also take some brake cleaner and clean out the box on the driver's side v/c and see if that has any affect on the issues.

The smoke rolling up out of the dipstick tube does concern me quite a bit though.

Oct 31, 2009 | 09:47 PM

#19

F350-6

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From: Texas

Quote:

Originally Posted by muddyforeman

The smoke rolling up out of the dipstick tube does concern me quite a bit though.

Start a poll. You'll be surprised at how many 7.3's have smoke. As long as you don't have any pressure from combustion, you're fine. Mine smokes. It has for at least the last 100,000 miles. I can't really remember when the smoke started. I can tell you the amount of smoke, and the odor of the smoke changes with different types of oils. The ones I've used checked out fine with Blackstone, but I can say Valvoline Premium Blue smokes more than most, and Mobil Delvac stinks pretty bad after about 4,000 miles.

Ignore the smoke and see what the scanner tells you.

Nov 1, 2009 | 05:59 AM

#20

DZL JIM

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From: North East Ohio

Quote:

Originally Posted by Hussler

EOT sensor resistance should be the following ...

0 F = 250K
32 F = 98K
50 F = 59K
----------
160 F = 5.32K
170 F = 4.48K
180 F = 3.75K
190 F = 3.17K

Any radio shack cheap 1/2 watt would work.

Ok, help me out here.
Does this mean you put in a 4.48k resistor if you want the sensor to put out a signal that it's seeing 170*?
And you'd use a 98k resisitor if you want it to put out a signal for 32*?

Do you know which wire this would go in (there are 2)?

__________________
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4

Nov 1, 2009 | 06:50 AM

#21

Hussler

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From: Medford Oregon

Quote:

Originally Posted by DZL JIM

You would put the resistor across both wires with the sensor unplugged. You can also unplug the sensor and measure the sensor resistance if you know the oil/water temp to see if it is functioning properly. I have done the latter.

Here is a complete listing for future reference ... Sorry, can't remember where I got it from.

-32F 826K
-30F 785K
-22F 575K
-20F 525K
-10F 365K
-4F 300K
0F 250K
10F 192K
14F 173K
20F 139K
30F 103K
32F 98K
40F 64K
50F 59K
60F 43K
68F 37.3K
70F 33.6K
80F 26.8K
86F 24.3K
90F 21.5K
100F 17.2K
104F 16.1K
110F 13.9K
120F 11.2K
122F 10.9K
130F 9.34K
140F 7.55K
150F 6.28K
158F 5.34K
160F 5.32K
170F 4.48K
176F 3.84K
180F 3.75K
190F 3.17K
194F 2.8K
200F 2.68K
210F 2.2K
212F 2.08K
220F 1.87K
230F 1.56K
240F 1.33K
248F 1.19K
CEL 0.38K

Nov 1, 2009 | 08:02 AM

#22

Talyn

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From: Ashland City, TN

oh, your taking the sensor out completly and fooling it cause the sensor works on resistance.

Yea, just unplug the sensor then and shove the Resistor in the end of the plug.

Nov 1, 2009 | 08:25 AM

#23

Hussler

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Joined: Sep 2007

Posts: 4,195

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From: Medford Oregon

Quote:

Originally Posted by Talyn

oh, your taking the sensor out completly and fooling it cause the sensor works on resistance.

Yea, just unplug the sensor then and shove the Resistor in the end of the plug.

Correct, the sensor is just a thermistor (variable resistor) sensitive to temperature. Don't know how well the truck will start cold if the PCM thinks oil is hot though.

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Nov 1, 2009 | 08:32 AM

#24

Talyn

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From: Ashland City, TN

Depending on how long it takes to smooth out.
lets say, it has to idle for 10 mins to smooth out.
start it and let the oil warm slightly, then shut off and plug in the resistor and start again.

I don't think the sensor is really doing anything but letting the truck know whats going on.
Everything on motor's is usually controlled by coolant temps.

Nov 1, 2009 | 11:47 AM

#25

DZL JIM

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From: North East Ohio

Quote:

Don't know how well the truck will start cold if the PCM thinks oil is hot though.

Quote:

Everything on motor's is usually controlled by coolant temps.

Truck should start fine with the resistor in a cold motor, just not have the correct timing or fuel available, but should be OK for a CCT.

And it's the Engine Oil Temp that sets the fuel tables, not coolant. In fact, there's no coolant input anywhere to the PCM.

__________________
'96 7.3 F-350 Reg Cab 4x4 - bought new.
'04 6.0 E-350 custom 4x4
'08 6.4 F-550 Reg Cab 6 spd 4x4
'17 6.7 F-250 KR ccsb 4x4

Nov 1, 2009 | 12:35 PM

#26

muddyforeman

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Junior User

Joined: Feb 2005

Posts: 96

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From: london KY

Well hereis how stands now. Not plugged In. 60 degree ambient temp. Glow plugs are working fine, truck will not start. Cranks and barely hits every 3rd od 4th rotation. Whitish grey smoke from the tailpipe. But refuses to start. All the glow plugs ohm out at the vc harness the glow plug relay

is working fine.

Usually I can ug the truck in for a few hrs it will start then be rough till it get all the way warm

Nov 1, 2009 | 03:32 PM

#27

muddyforeman

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Joined: Feb 2005

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From: london KY

Sorry for the typos in the first post, (iphone). I finally got it started after cranking the weeeeee out of it, It finally hit and fired up to a rough chug. I put the resistor in the EOT plug, tool showed it to be 185. Ran the CCT truck died. Restarted and tried again, Truck died, and a code for the EOT Sensor flagged.

I plugged the EOT back in, Started the truck warmed it up to get the EOT past 160, truck started running a little better. Ran the CCT truck died for a split second, scan tool again popped up and EOT code.

Im beyond stumped at this point, please help