92 Z28 Running Temp
Thread Starter
Junior Member
Joined: Apr 2001
Posts: 5
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From: Long Island, NY
92 Z28 Running Temp
I just purchased 92 Z28 305 TPI. I noticed that sitting in traffic the temp went to 230 but dropped down to 180 once I started driving. 230 seemed high but I am not sure what the car should run at. Before I have it looked at I would appreciate some info.
Thanks, Stacy
Thanks, Stacy
Supreme Member
Joined: Mar 2001
Posts: 2,030
Likes: 0
From: Naples,Fl.
Yes believe it or not that is totally normal. GM designed it to work that way. So there's nothing wrong.
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'87 Trans Am:
(Engine)
305 TPI
180 Degree Thermostat
JET Fan Switch
TB Bypass
Accel 300+ 8.8 Racing Wires
Accel Super Coil
Bosch Platinium Plugs
Custom Ram Air with K&N
Removed Emissions Equipment & Cat.
(Stereo)
Full Kenwood Excelon System
------------------
'87 Trans Am:
(Engine)
305 TPI
180 Degree Thermostat
JET Fan Switch
TB Bypass
Accel 300+ 8.8 Racing Wires
Accel Super Coil
Bosch Platinium Plugs
Custom Ram Air with K&N
Removed Emissions Equipment & Cat.
(Stereo)
Full Kenwood Excelon System
Member
Joined: Dec 2000
Posts: 180
Likes: 0
From: Raleigh, NC, USA
Car: 91 Firebird
Engine: L03
Transmission: A4
that sounds about right. thermostat should open at 195 (stock, but it sounds like you have a 180* thermostat) and keeps the temp above 195 (or 180 in your case) and the fan comes on around 220-230 and keeps the temp below that.. while driving, there's just enough cool air to keep the temp down at it's low end, and sitting still, it should rise.
Junior Member
Joined: Apr 2001
Posts: 27
Likes: 0
From: Panhandle of Nebraska
220 is when the fan should kick on with the stock chip in the eprom. It is a bit hot for performance though for sure. There are a ton of mods you can do to have your fan(s) manually kick on with the flip of a switch if you search the archives. Water wetter will help some, and get a cooler stat. Your car will thank you!
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1984 Z28 - L69 optioned, 350HO w/ Trick Flow Heads, Drop Forged Lunati Crank, Crane Cam and 1.5 Roller Rockers, Stock Z28 Intake Manifold, Highly Tweaked Rochester Carb(700cfm), K&N Filter, ThermoMaster Chip w/ 160 Stat, Comp Headers, 3" Stainless Dual Exhaust w/ no Cat & Dynoflow Muffler, 4 wheel disc brakes, etc....
God bless us father, son, and holy ghost....whoever goes the fastest wins the most!!
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1984 Z28 - L69 optioned, 350HO w/ Trick Flow Heads, Drop Forged Lunati Crank, Crane Cam and 1.5 Roller Rockers, Stock Z28 Intake Manifold, Highly Tweaked Rochester Carb(700cfm), K&N Filter, ThermoMaster Chip w/ 160 Stat, Comp Headers, 3" Stainless Dual Exhaust w/ no Cat & Dynoflow Muffler, 4 wheel disc brakes, etc....
God bless us father, son, and holy ghost....whoever goes the fastest wins the most!!
Junior Member
Joined: Feb 2000
Posts: 28
Likes: 0
From: Hickory Hills, IL (Chicago)
If you're ambitious, changing the water pump to a high-performance unit like one from Stewart Components can make a world of difference with the fans kicking in sooner.
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- 1997 30th Anniversary SS LT4 #74 with all SLP options and K&N, white gage faces, and Hotchkis shock tower brace - In process: Kenny Brown SFC's
- 1996 Corvette Grand Sport LT4 #509 with K&N, Flowmaster exhaust, Hypertech power programmer, and Baer slotted/cross-drilled brakes, MSD Digital 6 ignition - In process: SLP throttle body and 1-3/4" headers, AFR heads, 4.10 gears, custom Panasonic/Alpine/Audio Control/ADS audio system
- 2000 Chevy TrailBlazer
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