ECT/EOT deltas way high

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Nov 2, 2012 | 05:08 PM

BRay09

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Cargo Master

Joined: Oct 2008

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From: Elyria, OH

ECT/EOT deltas way high

My 06 f250 has been running down the highway at 75 for 45 mins. I checked the deltas and ECT is at 190 ( new thermostat) and EOT is at 252. Now the other day after a cold soak of two days at 45 degrees, the EOT was at 90 before starting. The air intake temperature is at 187. Is that right? It's only 36 degrees out. Right now, EOT voltage is at 0.57v. Anything else I should look at?

Nov 2, 2012 | 05:30 PM

69cj

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Joined: Jul 2005

Posts: 13,834

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From: Middle Tn.

Quote:

Originally Posted by BRay09

How are you taking those readings? You have problems with your readings to start with. Get them straightened out then go after your deltas.

Nov 2, 2012 | 05:33 PM

gwg42

Senior User

Joined: Sep 2012

Posts: 220

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From: Central TX

I have similiar issues although the deltas are not as large. There is thread under my user name that you can see responses to my delta issues. Are you using a ScangaugeII?

Nov 2, 2012 | 05:51 PM

BRay09

Thread Starter

Cargo Master

Joined: Oct 2008

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From: Elyria, OH

I am using a Mac tools mentor scanner under the datastream. What am I doing wrong?

Nov 2, 2012 | 05:53 PM

Misky6.0

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Joined: Oct 2010

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From: Ouray, CO

Quote:

Originally Posted by BRay09

I am using a Mac tools mentor scanner under the datastream. What am I doing wrong?

I think the eot is in c* vs f* for ect.
The iphone threads show a formula
Since it is user programable.
The sg2 works properly.

Nov 2, 2012 | 05:55 PM

grantpage

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Joined: Mar 2008

Posts: 213

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From: Raleigh, NC

The EOT sensor could be bad, The 2 sensors are the same, so you can swap the 2 sensors and see what the readings are.

Nov 2, 2012 | 06:07 PM

BRay09

Thread Starter

Cargo Master

Joined: Oct 2008

Posts: 2,308

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From: Elyria, OH

I will have to look at that.

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Nov 2, 2012 | 06:12 PM

Rusty Axlerod

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From: L.A. (Lower Alabama)

Bottom pic

Nov 2, 2012 | 06:19 PM

#10

BRay09

Thread Starter

Cargo Master

Joined: Oct 2008

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From: Elyria, OH

Nice, easy to get to. Thank you rusty

Nov 2, 2012 | 06:26 PM

#11

Misky6.0

Lead Driver

Joined: Oct 2010

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From: Ouray, CO

I think eot that high would trigger the fan to go on super high...

Nov 2, 2012 | 06:39 PM

#12

BRay09

Thread Starter

Cargo Master

Joined: Oct 2008

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From: Elyria, OH

I don't ever really hear the fan come on though. Can you hear it in the truck when it comes on?

Nov 2, 2012 | 06:39 PM

#13

cheezit

Post Fiend

Joined: Oct 2009

Posts: 12,123

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From: N. Fort Worth, tx

check aginst iat2. do not use iat1 as it has a maf heater

Nov 2, 2012 | 06:57 PM

#14

BRay09

Thread Starter

Cargo Master

Joined: Oct 2008

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From: Elyria, OH

Will do. Just checked temps again and both read in degF

Nov 2, 2012 | 07:59 PM

#15

Rusty Axlerod

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Joined: Feb 2011

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From: L.A. (Lower Alabama)

Quote:

Originally Posted by BRay09

Nice, easy to get to. Thank you rusty

Yes Sir! And you will definitely hear it kick up on high (even with the radio on

). When I first got my truck and it kicked up towing on hills, first couple of times it happened I was checking my mirrors because I thought someone was trying to pass!