1985 question
Melting Slicks
Joined: Jun 2004
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Le Mans Master
Joined: Feb 2006
Posts: 8,753
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From: Louisiana
On the later L98's these items are located opposite sides. Right side is the coolant guage sender and the left side is the aux fan switch.
EDIT: the main fan is contoled by the ECM only. Settings are burnt into the chip.
Last edited by RRT vette; Feb 19, 2007 at 11:22 PM.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
A few close guesses but no cigar.
In 1985...
On Z51 cars, that coolant temp switch turns on only the auxiliary fan (in front of the radiator) on at 238*F. The main fan is controlled solely by the ECM at 228*F.
On non-Z51 cars, it turns the main fan on at 238*F. (The ECM should already have turned the main fan on at 228*F, so the temp switch is just a backup. non-Z51 cars have no auxiliary fan.)
In 1985...
On Z51 cars, that coolant temp switch turns on only the auxiliary fan (in front of the radiator) on at 238*F. The main fan is controlled solely by the ECM at 228*F.
On non-Z51 cars, it turns the main fan on at 238*F. (The ECM should already have turned the main fan on at 228*F, so the temp switch is just a backup. non-Z51 cars have no auxiliary fan.)
Melting Slicks
Joined: Jun 2004
Posts: 3,032
Likes: 4
My non-Z51 1985 has an auxillary fan.
With no aux fan, it should be a plugged hole, at least thats what my book suggests.
(EDIT: I'm referring to '85's- I have no idea if that applies for other years)
Last edited by mikey whipreck; Feb 20, 2007 at 10:02 AM.
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Instructor
Joined: May 2005
Posts: 143
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From: MESQUITE TEXAS
need help
I have a 1985 vette with a tpi onthe passeners side of the motor by the valve cover there is a little round vacum canster i'm trying to find out what it's for and what it is called i looked at enging bay pic and did not see a good pic of the motor on the passenger side can someone tell what it's called
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Forgot some non-Z cars have the fan option. Oh well.
But ALL 85s have the same coolant switch there, which was my point.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
I have a 1985 vette with a tpi onthe passeners side of the motor by the valve cover there is a little round vacum canster i'm trying to find out what it's for and what it is called i looked at enging bay pic and did not see a good pic of the motor on the passenger side can someone tell what it's called
