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Question

Hi speed fan is always on even when the car is cold with no A/C on ?

Submitted: 57 days and 2 hours ago.

Category: Pontiac

Value: $15

Status: CLOSED

Year : 1995
Make : Pontiac
Engine : 5.7L

Already Tried:
new coolant sen new temp sen checked all relays and fuses i even replace the PCM because one of your mechanic name NICK i believe told me that i should replace the PCM?

Posted by Dan 57 days and 1 hours ago.

Info Request

Hello wchaudhry,

I was reading the other questions you had with nick, If you replaced the PCM and its still acting up, You have either a wire shorted to ground to the fan relay or you have something else wrong that is making the PCM turn the fan on. I can instruct you on how to check the circuit from the PCM to the relays to see if they are grounded or not. To check to see if something else is making the fans to come on, you need a scan tool that can read data from the PCM.

Have you had codes checked on this yet?

56 days and 22 hours ago.

Reply

no i did not because there is no check engine light on so no code to read

Posted by Dan 56 days and 7 hours ago.

Answer

Its always good to check. There may be a code that does not set the light off.

56 days and 4 hours ago.

Reply

no code there i hv to take it to the dealer i hv spent too much money on it already .well may be u can help me with the other one same car my driver side power door lock dont work i hv installa new door acuator all fuses are fine i dont see any relay for the power door unless they are not under the hood with other relays.

Posted by Dan 56 days and 4 hours ago.

Info Request

Yea, It needs a scan tool hooked up to see what is out of range and causing the fans to come on.

DO the unlock and lock both don't work?
How about passenger side?

56 days and 4 hours ago.

Reply

the passanger side work with both side buttons

56 days and 4 hours ago.

Reply

so you think i should take the car to the dealer because i took it to the AAMCO transmission shop they have the ASE certified mechanis but they could not figer it out .

Posted by Dan 56 days and 4 hours ago.

Answer

Here are a couple of possibilities on the fan issue:
The wire is shorted to ground between the PCM and fan relay
There is high resistance in the coolant temp sender circuit for computer.
The a/c pressure switch circuit is shorted.
Or a bad program in the PCM.

AS far as the door lock problem, Give me a few minutes to look up the wiring for it. A lot of times I see a broken wire in the boot between the door and the body.

56 days and 4 hours ago.

Reply

well i did unpluhg the AC pressure switch i did install the new coolant sensor neither one worked .and i have just instal the brand new PCM.well i guess then there is short some where in the wire from pcm to relays

Posted by Dan 56 days and 3 hours ago.

Info Request

So the drivers lock switch will work the passenger side lock but not the drivers side?

56 days and 1 hours ago.

Reply

yes both side swirh lock and unlock the passanger side door but neither do the driver side.

Posted by Dan 56 days and 1 hours ago.

Answer

You need to check the wiring to the actuator. Pull the connector off to the actuator and hook a test light up to the 2 wires in the connector and cycle the locks and see if it light the test light. If it lights the test light, The new actuator is at fault. If it does not light the test light, ohm the gray wire and the tan wire from the lock actuator to the drivers window switch. The wires go from the actuator to the switch on the drivers side with a splice in it that goes to the passenger side. So if the passenger lock works, you have either a faulty lock actuator or a short or an open wire between the splice and the actuator.

55 days and 4 hours ago.

Reply

okay the gray wire do light up the test light but the tan one dont i have try to follow the tabn wire all the way in side to the car but did not find any short or broken wire even in the boot between door and body s i gues i am half way now ?

Posted by Dan 55 days ago.

Answer

Both the tan and the gray wire willl have a ground with the switch not pushed. When push lock The Gray wire will have power and when push unlock, the tan should have power.

54 days and 23 hours ago.

Reply

no tan dont have any power when pushed unlock ? i have tried many time do u think i might have a bad driver side switch?

Posted by Dan 54 days and 10 hours ago.

Answer

If the drivers side switch was bad, the passenger side would not unlock. Since the passenger side lock works when you push the unlock button on the drivers side, you have an open wire in the tan wire between the connector for the actuator and where the passenger side wire splices int that wire going to the lock switch.
Did you find the splice when you traced the wire in the door?

54 days and 8 hours ago.

Reply

NO I DID NOT BUT I DID FIND THE SPLICE IN THE GRAY WIRE . I WENT ALL THE WAY INSIDE TO THE CAR I TOOK THE BOT OFF AND STILL NOT SEE THE SPLICE IN TAN WIRE SO IF YOU CAN TELL ME IF IT MIGHT BE IN SIDE THE CAR OR IT HAS TO BE IN DOOR PLZ LET ME KNOW.

54 days and 3 hours ago.

Reply

Mr dan i am waiting on you let me know if u can help i hv check the wire but i did any splice unless it might be in passanger side door ?

Answer

Here is a picture Splice S504 is on the gray wire and Splice S503 is on the tan wire. A splice is where 3 wires come together. It is taped in the harness on the drivers door. Sorry it took so long to reply.

View Full Image

Edited by Dan on 9/30/2009 at 2:28 AM

Accepts:
Expert:	Dan
Pos. Feedback:	100.0 %
Answered:	9/30/2009

ASE Certified Technician

20 + years working on cars 9 years GM Tech

Posted by Dan 53 days and 1 hours ago.

Info Request

Any luck yet?

52 days and 21 hours ago.

Reply

no i have open all the wire even in to the car but no splice yet i have taken out nost of the stuff from car but now i dont know witch way those wire goes its to many wires all over i too it to the dealer to day they said it hase to be inside some where behind the fire wall or in body panel i have to pay $225.00 for there labor but got nothing done

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Question

Hi speed fan is always on even when the car is cold with no A/C on ?

Optional Information

Year : 1995Make : PontiacEngine : 5.7L Already Tried: new coolant sen new temp sen checked all relays and fuses i even replace the PCM because one of your mechanic name NICK i believe told me that i should replace the PCM?

Info Request

Reply

no i did not because there is no check engine light on so no code to read

Answer

Its always good to check. There may be a code that does not set the light off.

Reply

Info Request

Yea, It needs a scan tool hooked up to see what is out of range and causing the fans to come on.DO the unlock and lock both don't work?How about passenger side?

Reply

the passanger side work with both side buttons

Reply

so you think i should take the car to the dealer because i took it to the AAMCO transmission shop they have the ASE certified mechanis but they could not figer it out .

Answer

Reply

well i did unpluhg the AC pressure switch i did install the new coolant sensor neither one worked .and i have just instal the brand new PCM.well i guess then there is short some where in the wire from pcm to relays

Info Request

So the drivers lock switch will work the passenger side lock but not the drivers side?

Reply

yes both side swirh lock and unlock the passanger side door but neither do the driver side.

Answer

Reply

okay the gray wire do light up the test light but the tan one dont i have try to follow the tabn wire all the way in side to the car but did not find any short or broken wire even in the boot between door and body s i gues i am half way now ?

Answer

Both the tan and the gray wire willl have a ground with the switch not pushed. When push lock The Gray wire will have power and when push unlock, the tan should have power.

Reply

no tan dont have any power when pushed unlock ? i have tried many time do u think i might have a bad driver side switch?

Answer

Reply

NO I DID NOT BUT I DID FIND THE SPLICE IN THE GRAY WIRE . I WENT ALL THE WAY INSIDE TO THE CAR I TOOK THE BOT OFF AND STILL NOT SEE THE SPLICE IN TAN WIRE SO IF YOU CAN TELL ME IF IT MIGHT BE IN SIDE THE CAR OR IT HAS TO BE IN DOOR PLZ LET ME KNOW.

Reply

Mr dan i am waiting on you let me know if u can help i hv check the wire but i did any splice unless it might be in passanger side door ?

Answer

Here is a picture Splice S504 is on the gray wire and Splice S503 is on the tan wire. A splice is where 3 wires come together. It is taped in the harness on the drivers door. Sorry it took so long to reply. View Full Image Edited by Dan on 9/30/2009 at 2:28 AM

Info Request

Any luck yet?

Reply

Related Pontiac Questions

Year : 1995
Make : Pontiac
Engine : 5.7L

Already Tried:
new coolant sen new temp sen checked all relays and fuses i even replace the PCM because one of your mechanic name NICK i believe told me that i should replace the PCM?

Yea, It needs a scan tool hooked up to see what is out of range and causing the fans to come on.

DO the unlock and lock both don't work?
How about passenger side?

Here is a picture Splice S504 is on the gray wire and Splice S503 is on the tan wire. A splice is where 3 wires come together. It is taped in the harness on the drivers door. Sorry it took so long to reply.

View Full Image

Edited by Dan on 9/30/2009 at 2:28 AM