low & high speed cooling fan tests? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-18-2003, 04:01 PM   #11
Senior Member
True Car Nut
 
Join Date: Jun 2002
Location: Bedroom, Ontario
Posts: 3,266
Thanks: 0
Thanked 0 Times in 0 Posts
Drifter420 is on a distinguished road
Default

Quote:
Originally Posted by NVSSEI
Drifter,
After looking through my 97 service manual it looks like the "display trick" won't work on the newer cars.
You can't just ground the sensor and/or the relay on the 97, it will turn on the SES light. I found a fix though, the ZZPerformance high low fan switch. http://www.zzperformance.com/zzp/pro...witch_hilo.htm
It is designed for the Grand Prix, but it will work on the Bonneville also. The wiring is basically the same, but the fans will turn off when the key is off instead of continuing to run as stated in their description. Because of this you don't need the timer module . I just installed it on my 97 and I have low speed or high speed fans when I want or I can turn it off and the ECM controls it.
thanx NVSSEI .. you da man.. so I guess I"m stuck payin the 50 bux USD for it
Drifter420 is offline   Reply With Quote
Old 07-18-2003, 04:40 PM   #12
Senior Member
True Car Nut
 
Join Date: Feb 2003
Posts: 3,684
Thanks: 0
Thanked 0 Times in 0 Posts
smellbird is on a distinguished road
Default

Hmmm. Anyone have this? I'm tempted to try it out.
smellbird is offline   Reply With Quote
Old 07-18-2003, 05:08 PM   #13
Senior Member
True Car Nut
 
Join Date: Sep 2002
Posts: 3,392
Thanks: 0
Thanked 0 Times in 0 Posts
fuddyduddy121 is on a distinguished road
Default

I'm surprised the 95-99 climate controls won't display the coolant temperature.

The PCM controlls the fans with the info it receives from the engine coolant temperature sensor.
fuddyduddy121 is offline   Reply With Quote
Old 07-18-2003, 06:48 PM   #14
Senior Member
Posts like a 4 Banger
 
Join Date: Oct 2002
Location: Las Vegas, NV
Posts: 131
Thanks: 0
Thanked 0 Times in 0 Posts
NVSSEI is on a distinguished road
Default

Fuddy,
This is direct from the 1997 Service Manual
Automatic Control Air Conditioning page 1C-15
DISPLAYING DIAGNOSTIC TROUBLE CODES
The only way to display diagnostic trouble codes (DTC'*) is by using a scan tool. There are no provisions for "ON-BOARD" diagnostics.

Smellbird,
If you are referring to the switch, I have it installed now and any time the ignition is on I have the choice of manual Low speed, manual High speed, or computer controlled.

Drifter,
If you go that route PM me. I have some suggested changes in the directions they send.
NVSSEI is offline   Reply With Quote
Old 07-18-2003, 07:31 PM   #15
Senior Member
True Car Nut
 
Join Date: Feb 2003
Posts: 3,684
Thanks: 0
Thanked 0 Times in 0 Posts
smellbird is on a distinguished road
Default

How hard to install? Just splice into some wires, run some wires, and mount the switch?
smellbird is offline   Reply With Quote
Old 07-18-2003, 09:33 PM   #16
Senior Member
Posts like a 4 Banger
 
Join Date: Oct 2002
Location: Las Vegas, NV
Posts: 131
Thanks: 0
Thanked 0 Times in 0 Posts
NVSSEI is on a distinguished road
Default

That'* pretty much it. If you decide to do it let me know and I'll help you around the Grand Prix directions. You mount the switch on a grounded screw, splice a hot wire to a key on source and splice two wires to a wire on each relay and then cut the wire you spliced them to. (put the switch inline to the relay ground)
NVSSEI is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
$&)$&*)#&+()#%& )#@(%&#)%*(&+_ Maymybonnieliveforevr Lounge 6 05-02-2007 07:07 PM
High speed fan mod... BonneMeMN Everything Electrical & Electronic 2 06-04-2004 10:02 PM
High speed blower fan on A/C bantaj 1992-1999 5 07-17-2003 10:13 PM
High Speed Fan switch for L27 Allmachtige Performance, Brainstorming & Tuning 3 07-01-2003 02:56 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 07:50 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.