I found a Hypertech thermostat part# 1008 and Hypertech cool fan switch part# 4026. the 3 Hypertech thermostats 160 I have and if the cool fan Switch will fit im going to order it tonight Thanks

 

Its for a 97 Z28 LT1 350 Thanks

 

Why would you use that switch, rather than simply and correctly reprogram the PCM?

The PCM controls the fans in two stages, both fans low speed at one temperature, and shifts them to high speed if the coolant temperature rises above the low speed temp. It also turns the fans on low speed when the A/C is in use. There is no way that switch can be wired up to replicate the PCM programming. It takes a set of three relays to achieve this control. If those relays are not switched on and off in the correct response to the PCM, you'll get an “SES” light and diagnostic codes that will affect the way the engine runs.

That switch is intended for use on the 3rd Gen TPI engine, because unlike the LT1 they use a switch to control one of the temperatures and the PCM to control the other.

 

I'm new to the LT1 but thank you for the reply

 

Seriously?

You joined in 2011 and all your posts have been about your “97 Z28 LT1 350”. Most of your 74 posts have been in the “LT1 Based Engine Tech” forum. I have responded to many of your threads, trying to help. I gave you a reference to a reliable LT1 tuner.

 

when I say New I mean its the first one i have every worked on. and yes I ask a lot of questions about it i have been working on this car since August of 2016. and just got my motor back from the speed shop about 2 weeks a go. ill be 67 in May had a lot of health problems in the last 8 years. I have had Back Surgery knee meniscus surgery and rotator cuff surgery that will slow you down. Im going to post some pictures of where im at on the car and when i took the motor to R&R speed shop in Huntsville Al. And just got it out about 2 weeks ago. the health problems i had the motor was at the speed shop since August of 2018. so you know im going to post a picture of the bill . but i thank you for helping me anytime i post a ? on here cause it help me under stand thinks .allso i dont under stands like yall do i was in Special Education so i Thank yall when i have a ? for helping me under stand. Thanks to all that has help me.

 

weedog

instead of installing some switch to turn on fans, your PCM can be programed to do that with the lower temp, 160, T Stat.

Given your motor was built, I assume not stock, it will require tuning for that build. The tuner recommended by Injuneer would be the one to contact about that and the tuner will need to know what mods were done to the engine, your gear & tire size, etc. Tuners have a form you fill out with this info

Regarding Hypertech, the only thing they make worth buying is a T stat and their fuel pressure gauge. Their hand held tuner is crap.

 

Yes im going to ship it to Moe Bailey hes going to do it for 160