180 Hypertech on stock tune?
Thread Starter
On The Tree
Joined: Aug 2016
Posts: 141
Likes: 2
180 Hypertech on stock tune? 2001 LS1 TA. Can you run a 180' thermostat on a stock tune? I'm running 231 temps routinely in 85 ambient air temperature and looking to cool it down with a flush, trans cooler and SLP fan switch. Thoughts? Thanks!
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The car warms up just fine, but a may take a few minutes longer. As far as emissions go I can't say if it changes that to any significant degree. If you have very strict testing in your area it may or may not make a difference. Here in MI where I'm at we don't have to worry about that
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TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
try to bleed air out (at steam crossover tube);
check for leaks (use pressure tester, detects internal leakage);
check radiator and A/C condenser for airflow blockages;
check airflow deflector for damage.
Thread Starter
On The Tree
Joined: Aug 2016
Posts: 141
Likes: 2
Thanks. I just checked it. There doesn't appear to be air in the system.
With the car idling in park she went up to 230. Its 68 degrees outside. Normally driving in this temp it would be around 190. I didn't hear the low speed fan but the high speed came on approximately 225 degrees. The rad isn't being obstructed and the car has good heat. I recently saw post stating the low-speed fans coming on in the low 200s in the high speed fan switching on around 226-230.
I will shortly be removing the factory ps and trans coolers and will install Derale aux coolers. I will also be cleaning the outside of the rad for good measure. I think now these numbers are due to he 187 factory stat and fan temps. They should drop with the installation of the aux coolers. Only the trans cooler will be in front of the radiator so that might help. I think the SLP fan switch could work too but I'm unsure if the low speed fan is operating.
With the car idling in park she went up to 230. Its 68 degrees outside. Normally driving in this temp it would be around 190. I didn't hear the low speed fan but the high speed came on approximately 225 degrees. The rad isn't being obstructed and the car has good heat. I recently saw post stating the low-speed fans coming on in the low 200s in the high speed fan switching on around 226-230.
I will shortly be removing the factory ps and trans coolers and will install Derale aux coolers. I will also be cleaning the outside of the rad for good measure. I think now these numbers are due to he 187 factory stat and fan temps. They should drop with the installation of the aux coolers. Only the trans cooler will be in front of the radiator so that might help. I think the SLP fan switch could work too but I'm unsure if the low speed fan is operating.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
Stock:
fan-low on=226 off=219
fan-high on=234 off=227
If fan-low is not coming on then that may be the problem... there are 3 relays which control the series/parallel configuration of the fans, see attached.
fan-low on=226 off=219
fan-high on=234 off=227
If fan-low is not coming on then that may be the problem... there are 3 relays which control the series/parallel configuration of the fans, see attached.
Thread Starter
On The Tree
Joined: Aug 2016
Posts: 141
Likes: 2
Changed the stat to a "high performance" 180 degree Motorad stat. Ran no higher than 205 w AC off. (AC on around 199). I also bypassed the stock PS cooler. I will probably either get a HPTuner or a Hypertech Hyperpac to adjust my fans. Next will be installing the PS cooler and trans cooler. Looking good so far.
Changed the stat to a "high performance" 180 degree Motorad stat. Ran no higher than 205 w AC off. (AC on around 199). I also bypassed the stock PS cooler. I will probably either get a HPTuner 1or a Hypertech Hyperpac to adjust my fans. Next will be installing the PS cooler and trans cooler. Looking good so far.
Thread Starter
On The Tree
Joined: Aug 2016
Posts: 141
Likes: 2
Just changed the stat to a 180 hi perf. Bypassed the radiator hose PS cooler as well. Car runs 180@hwy speeds to 212 around town. It was definitely the thermostat. With the AC on it stays close to 180 city/hwy - now I'm just getting a Hypertech to do my fans.
Thanks for all the infoðŸ‘
Thanks for all the infoðŸ‘