EGT temps took longer to come down today? - Ford Powerstroke Diesel Forum

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post #1 of 12 Old 11-23-2011, 02:37 PM Thread Starter
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EGT temps took longer to come down today?

I have a CTS and EGT probe. Have had them in for over a week and have been watching them closely as we all should. Turns out I was idling my truck much longer than needed before I got the CTS to bring the EGTs down. Anyway, up until today, I could pull in from wherever I had driven and it only took 30-45 seconds normally for my EGT to drop to 350. Today the high was 62 (not hot by any means), and I had to run an errand (to pick up some fuel additive) this afternoon. It's only 4-5 miles from work. I drove there, pulled up, put in park and waited for my temps to come down. They trickled down MUCH slower than normal. I didn't hot rod it on the way there. 2 miles of it on the highway at 70mph. It finally got into the 370's, briefly hit 368, then back into the mid 370's. I waited several minutes and they never got lower. I finally turned it off, went in, got my stuff and went back to work. Same thing. On the way home, same thing.

I had the heater on. Turned the temp up to 90, fan on full blast, didn't make a difference. Turned it down to 68 and fan on low, no difference.

Why would it cool down slower today?

2005 CCSB 4x4 6.0L Harley
8" ProComp lift, 20" Rockstars, 37" Nittos, Fox Reservoir Shocks, Dual Fox stabilizers, 2008 Tailgate with camera, 4" Straight Piped (no muffs, no kitties), Nerfs, Lights, X3 tuned by IDP, CTS, Optima Red Tops, Line-X, AutoPage

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post #2 of 12 Old 11-23-2011, 02:54 PM
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Did you have your AC or defroster on? It will take a bit longer running your AC pump.

Colin
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post #3 of 12 Old 11-23-2011, 02:55 PM Thread Starter
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Nope, no AC, just the heater. I did have it blowing on defrost though.

2005 CCSB 4x4 6.0L Harley
8" ProComp lift, 20" Rockstars, 37" Nittos, Fox Reservoir Shocks, Dual Fox stabilizers, 2008 Tailgate with camera, 4" Straight Piped (no muffs, no kitties), Nerfs, Lights, X3 tuned by IDP, CTS, Optima Red Tops, Line-X, AutoPage

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post #4 of 12 Old 11-23-2011, 02:56 PM Thread Starter
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The vent it's blowing out of shouldn't matter. Only that the heater is on and AC is off to pull heat out of the coolant.

2005 CCSB 4x4 6.0L Harley
8" ProComp lift, 20" Rockstars, 37" Nittos, Fox Reservoir Shocks, Dual Fox stabilizers, 2008 Tailgate with camera, 4" Straight Piped (no muffs, no kitties), Nerfs, Lights, X3 tuned by IDP, CTS, Optima Red Tops, Line-X, AutoPage

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post #5 of 12 Old 11-23-2011, 03:15 PM
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Not sure about the 05's but some vehicles run the ac when in defrost... Just a thought.
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post #6 of 12 Old 11-23-2011, 03:37 PM
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If you had your defrost on, your AC pump should be running to dry. When it is warmer out, my EGTs take a bit to come down below 400 with that pump running.

Colin
59-68Galaxies, Fairlanes
54 Ford Skyliner Glass Top
60 Country Sedan Wagon
87/93 5.0s 347
Buy/Sell/Trade/Service 40s50s60s cars!
06 F350 Dark Stone XLT FX4
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EGR Cooler gone
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2011 Tailgate
Eaton TrueTrac
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post #7 of 12 Old 11-23-2011, 03:38 PM
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Check your boost tubes(boots mainly), manifolds, and up pipes and see if a small leak has developed. won't hurt anything and won't take too much time.

David

05 f250 ( double your pleasure ) underway

'10 f250 ccsb 4x4, project super mom 366/515 compounds, 200hp sticks, and all the other goodies
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post #8 of 12 Old 11-23-2011, 03:42 PM Thread Starter
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I will turn defrost off tomorrow. Going bow hunting early in the morn. Thanksgiving family tradition. I've got a charged air tube in the mail from a single alternator truck. When it gets here I'll check the rest of the charged air tubing.

I did have my first diesel race last night, another F250, on the highway from 70mph...smoked him. Maybe I blew a tube/hose...

2005 CCSB 4x4 6.0L Harley
8" ProComp lift, 20" Rockstars, 37" Nittos, Fox Reservoir Shocks, Dual Fox stabilizers, 2008 Tailgate with camera, 4" Straight Piped (no muffs, no kitties), Nerfs, Lights, X3 tuned by IDP, CTS, Optima Red Tops, Line-X, AutoPage

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post #9 of 12 Old 11-23-2011, 03:43 PM
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BTW - that truck is great looking!

Colin
59-68Galaxies, Fairlanes
54 Ford Skyliner Glass Top
60 Country Sedan Wagon
87/93 5.0s 347
Buy/Sell/Trade/Service 40s50s60s cars!
06 F350 Dark Stone XLT FX4
SCTX3 Custom Tunes
ARP Head Studs
EGR Cooler gone
MBRP Stright Pipe
Edge Insight
20" Harleys 35" AT2
2011 Tailgate
Eaton TrueTrac
2" Leveling
Black Windows/lights
Blue Spring
03 Turbo
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post #10 of 12 Old 11-24-2011, 12:33 AM Thread Starter
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Quote:
Originally Posted by Galaxie View Post
BTW - that truck is great looking!
Thanks!

2005 CCSB 4x4 6.0L Harley
8" ProComp lift, 20" Rockstars, 37" Nittos, Fox Reservoir Shocks, Dual Fox stabilizers, 2008 Tailgate with camera, 4" Straight Piped (no muffs, no kitties), Nerfs, Lights, X3 tuned by IDP, CTS, Optima Red Tops, Line-X, AutoPage

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