Engine Temp--160 vise 200 deg
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Senior User
Joined: Nov 2003
Posts: 124
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From: Hawaii
Engine Temp--160 vise 200 deg
I've purchased and installed one of the chip programers (no names) and in the instructions they stated the thermostat should be changed from the stock 200 deg to a 160 deg (which they will be happy to sell you).
I was wondering what you thought about running the 5.4L at this lower temp? As for heat in the cab, I live in Hawaii and I've never had the heat "on" (we are always 80 deg here).
I was wondering what you thought about running the 5.4L at this lower temp? As for heat in the cab, I live in Hawaii and I've never had the heat "on" (we are always 80 deg here).
Hotshot
Joined: Aug 2002
Posts: 12,679
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From: BC, Canada
Ken (webmaster) in the Computer Tuning forum, which is a ways further down on the main forum page, knows tons about chips and programmers. He probably has some good advice about thermostats if you want to ask there too.
Logistics Pro
Joined: Jul 2002
Posts: 4,821
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From: South Dakota
MHO.
I'd put money on that the 160 t-stat does nothing more than cause the pcm to think that it's in cold start mode, thus supplying more fuel to the combustion chamber, causing poorer milage, and accelerated engine wear from increased cylinder washout.
Only benefit would be a small increase in power, maybe 1-2 hp max.
Hardly worth the cost of accerated engine wear and poorer milage.
The stock t-stat is well suited for your type of engine.
I'd put money on that the 160 t-stat does nothing more than cause the pcm to think that it's in cold start mode, thus supplying more fuel to the combustion chamber, causing poorer milage, and accelerated engine wear from increased cylinder washout.
Only benefit would be a small increase in power, maybe 1-2 hp max.
Hardly worth the cost of accerated engine wear and poorer milage.
The stock t-stat is well suited for your type of engine.
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From: Hawaii
superrangerman2002
Does the chip programmer re-set the pcm so it doesn't look for the higher temp ? I agree the engine runs allot better meaning it feels like it's getting more fuel thus creating more power.
The change I have is in lower RPM's now. I get better response and torque but this change is only felt by an owner who's had his truck for some time and has become "one-with-it" (meaning your wife doesn't drive it and load it up with carbon--- lol---She'd kill me if she read that).
As a matter a fact, my trucks lifted with huge meats on it / headers / intake blah-blah-blah and I can't keep her butt out of it. She tells me to drive the Honda---
Thanks for your input
Does the chip programmer re-set the pcm so it doesn't look for the higher temp ? I agree the engine runs allot better meaning it feels like it's getting more fuel thus creating more power.
The change I have is in lower RPM's now. I get better response and torque but this change is only felt by an owner who's had his truck for some time and has become "one-with-it" (meaning your wife doesn't drive it and load it up with carbon--- lol---She'd kill me if she read that).
As a matter a fact, my trucks lifted with huge meats on it / headers / intake blah-blah-blah and I can't keep her butt out of it. She tells me to drive the Honda---
Thanks for your input
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Logistics Pro
Joined: Jul 2002
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From: South Dakota
Originally posted by Rusty1
superrangerman2002
Does the chip programmer re-set the pcm so it doesn't look for the higher temp ? I agree the engine runs allot better meaning it feels like it's getting more fuel thus creating more power.
The change I have is in lower RPM's now. I get better response and torque but this change is only felt by an owner who's had his truck for some time and has become "one-with-it" (meaning your wife doesn't drive it and load it up with carbon--- lol---She'd kill me if she read that).
As a matter a fact, my trucks lifted with huge meats on it / headers / intake blah-blah-blah and I can't keep her butt out of it. She tells me to drive the Honda---
Thanks for your input
superrangerman2002
Does the chip programmer re-set the pcm so it doesn't look for the higher temp ? I agree the engine runs allot better meaning it feels like it's getting more fuel thus creating more power.
The change I have is in lower RPM's now. I get better response and torque but this change is only felt by an owner who's had his truck for some time and has become "one-with-it" (meaning your wife doesn't drive it and load it up with carbon--- lol---She'd kill me if she read that).
As a matter a fact, my trucks lifted with huge meats on it / headers / intake blah-blah-blah and I can't keep her butt out of it. She tells me to drive the Honda---
Thanks for your input
I highly doubt that your chip would over ride any other pcm controls, with the exception of speedo calibration, and other exceptions for highly modded engines (like maf, headders, blowers, nos, etc.).
Changing to a lower t-stat is generally deterimental to the overall life of the motor, and I'd strongly reccomend against it. Going with a lower t-stat also keeps your oil from burning of condensation and other junk as quickly.