Question about 2001 Pontiac Grand Prix

1 Answer

When turning the fan on it only speed 2 and 5 work, whats wrong?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 521 Answers

Could be a problem wiht the fan switch, fan motor, or a part called blower motor resistor.

Posted on Oct 02, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

I have 2007 Suzuki XL7. I replaced radiator and fan assembly. Fans do not work. Is there a relay? If so, where is it?


Most fan and Ac relays are located in the under hood fuse and relay box. Adequately marked in owners manual or on plastic cover

Sep 03, 2016 | Suzuki XL7 Cars & Trucks

2 Answers

FANS WONT COME ON ,,ALL FUSES,RELAYS AND ELECTRIC FAN MOTORS ARE NEW,,THERMOSTAT IS GOOD,,WHERE IS ELECTRIC FAN TEMP SENSOR LOCATION


op
why not post symptoms first and not a barrage of parts.
must we decode that to a symptom,. kinda hard right.

I will not guess. what is wrong, nor what is not working on your car. now what fans you are talking about, up to 4 fans on cars.

cab blower fan (wild guess blower is ok) and so is HVAC, ?
radiator fans
Condenser fan.

my wild guess to , engine over heats?????????
if yes, the scan it first. no not last FIRST.
it dont work like you think its not a 1988 Samurai.
sorry,
on modern cars, they got smarter, the engine goes
gee the PCM knows water temp why have a fan temp regulator.
hark , now it dont. (saves cash on useless parts)
but has a relay , (well until you have my car and the relay is now 100% electronic, called a huge transistor)
we've used this tech in industry for years, but car makers just learning how still.
i digress. but evolution and history helps diagnosis.
what is there?

Ill look for you, ive posted this 100s of times
the book is 4 bucks to see online. the real deal
lets look now.
XL-7 (the dash matters big time)
answering for , overheats engine, and fans on RAD dead.
(some are staged, PCM brains... now. and also chain ops based on if A/C is on or not) facts.
first I see 2 fans... ok.
the next page shows nice block diagram of the fan system
yup, NOT Simple.

ill post those words for you.
"The engine cooling fan system consists of 2 electrical cooling fans and 3 fan relays. The relays are arranged in a series/parallel configuration that allows the engine control module (ECM) to operate both fans together at low or high speeds. The cooling fans receive positive voltage from the cooling fan relays which receive battery positive voltage from the underhood fuse block.
During low speed operation, the ECM supplies the ground path for the low speed cooling fan relay which is fan 1 relay through the low speed cooling fan relay control circuit. This energizes the low speed fan relay coil, closes the relay contacts, and supplies battery positive voltage from the fan 1 fuse through the cooling fan motor supply voltage circuit to the left cooling fan. The ground path for the left cooling fan is through the series/parallel relay which is fan 2 relay, and the right cooling fan. The result is a series circuit with both fans running at low speed.
During high speed operation the ECM supplies the ground path for the low speed fan relay through the low speed cooling fan relay control circuit. The ECM grounds the high speed fan relay, which is fan 3 relay, and the series/parallel relay, which is fan 2 relay through the high speed cooling fan relay control circuit. This energizes the series/parallel relay coil, closes the relay contacts, and provides a ground path for the left cooling fan. At the same time the high speed fan relay coil is energized closing the relay contacts and provides battery positive voltage from the fan 2 fuse 1 on the cooling fan motor supply voltage circuit to the right cooling fan. During high speed fan operation, both engine cooling fans have their own ground path. The result is a parallel circuit with both fans running at high speed.
When the request for fan activation is withdrawn, the fan may not turn OFF until the ignition switch is moved to the OFF position or the vehicle speed exceeds approximately 16 km/h (10 mph). This is to prevent a fan from cycling ON and OFF excessively at idle.
end quote.

i bet you didnt scan it , like 99.9 % of all posters here dont.
DTC Descriptors
DTC P0480: Cooling Fan Relay 1 Control Circuit
DTC P0481: Cooling Fan Relay 2 Control Circuit
DTC P0691: Cooling Fan Relay 1 Control Circuit Low Voltage
DTC P0692: Cooling Fan Relay 1 Control Circuit High Voltage
DTC P0693: Cooling Fan Relay 2 Control Circuit Low Voltage
DTC P0694: Cooling Fan Relay 2 Control Circuit High Voltage
Diagnostic Fault Information

is the ECT showing overheat, yes no?
if yes, it must operate a fan or 2.
the book even covers all tests for fans dead, in a large truth table.
both the FSM and alldata.com have that, its no secret ,its published in 4 major places.

lets back up
if the engine coolant is low (no that side tank the engine and rad)
the ECT will lie. if that happens the fans may not come one
that is because the ECT is useless measuring air, for water.
that water must touch ECT for ECT to work.
this is FIRST
then scan the ECT does it show overheating, IT must if it IS overheating. fix that next if it lies to you,(IR gun in hand)

The system has staged fans.
i cant find the trip points in my crappyy online pages.
but is like 225f then 250f trips. is my guess...
about. if the engine over heats, check fuses first then scan it.
it will simply tell you why its bad.
eg, fan1 output dead.
or if you hot wire a fan and its dead, then it is.
(only on cars with non modulated fans,,hot wire them,else not.)

now the link to the 4 buck real book.
the non dash XL7 (my guess) you this pick yourself... cant see car.
https://suzukipitstopplus.com/Products/10182-2007-xl7-service-manual.aspx

this is how it really works
the ECU has software that decide trip points for fans.
hard coded, this is. based on how hot it is and if A/C is on not.
its way smarter than 1988 and better.
the DTC errors can see an open line, shorted to ground or stuck 12v.(runs all time error)
(tells you relay is good or not)

25839272-0kjd5huq4lpr130nt243wle5-3-0.jpg no scanner no joy , sorry, tis a fact.....

25839272-0kjd5huq4lpr130nt243wle5-3-2.jpg

Aug 27, 2015 | 2007 Suzuki XL-7

1 Answer

FLUTTERING TEMP GAUGE I8N 2003 SATURN VUE


Well son, there are MANY reasons that might cause "fluttering" in your gauge. Mine started doing that, then I started getting a warning LIGHT for overheating. My solution for that was a fault in my fan. There are 2 speeds on my VUE'S electric fan. The one that required attention was speed/high (the speed/low was working). If your getting an intermittent short, watch both the temperature and fuel gauges to make sure it's not a real (both will do the "fluttering at the same time if it's faulty short) overheating problem. If you have an OCD-2 reader, plug it in under the driver's dashboard and go to function "live" read the engine temperature. If that's normal it will be between 120F-200F.
Faults may be relays in the under-hood fuse panel (there either good or bad, you can't see anything like other fuses) and there are the 30 amp or 10 amp fuses inside the same fuse block for that electric fan.. I've found that if I open the hood and start your car, after it warms up, there are tree things that could happen.
1: the low fan starts up, then start your A/C, the high fan speed comes on (normal, check your temp gauge).
2: After you warm it up, the low speed fan starts up, but with the A/C on, the high speed fan isn't coming on (bad high speed fuse or relay).
3: after warm up, the low speed fan doesn't come on, but starting the A/C the low speed fan comes on (bad sensor I think).

I've had a ghost in my VUE since I bought it, gone through 3 computers, CVT sensors, key won't turn without destroying the key. One time, I used the horn to get some deer off the road and the damned thing wouldn't shut off. While I was under the hood trying to get it to turn off, TWO cops stopped, they shined their flashlights on the fuse block and one on the diagram for me to pull the right fuse. I took it out, plugged it back in and it worked again! The shop didn't find a thing wrong with it, but the thing works still.s

Aug 13, 2014 | 2003 Saturn VUE

2 Answers

My cooling fan will not turn on. What could this be? I had someone tell me the water pump, but it does not leak.


Step 1:

This cooling fan circuit has 2 cooling fans and 2 cooling fan relays, both cooling fan relays are located in the BJB (battery junction box, underhood fuse box) there is a low speed or main cooling fan relay in cavity location # K-46 and the high speed relay is location # K-47! Also check the main cooling fan power fuse # 2 in the same BJB, The fuse is a MAXI-FUSE (large one) it is blue in color and is rated at 60amps!

Step 2:

Also check the coolent tempature sensor thats what signals the fan to turn on.

Step 3:

Do the fans turn on when you turn the a/c on. if not may have bad fan motor

Feb 27, 2013 | 1998 Ford Contour

1 Answer

2004 Kia Optima fan operates erratically.


problem could be in the switch if fan control speeds off.

Oct 09, 2012 | 2004 Kia Optima

1 Answer

Alrighty my fans arent working when my car grand prix gt is on... the fans only work when i turn the ac or defrost on... we just changed the censors, temp gage, thermostat, pump,fuses, .... and still not...


Turn the key on and unplug the coolant temp sensor to see if the fans will turn car does not need to be running. There should a few relays hi speed fan, lowspeed fan. It is also possible that the fan motors are bad as well. The different speeds are opertating at different voltages and when high speed kicks in enough voltage is supplied to power up the fan however the lowspeed may be requiring to much voltage to operate with in the fans parameter. Attached is your fan circuit wiring diagram a3de536.gifIf you remove the relays one at a time a run a jumper wire between terminals 87 and terminal 30 on the relay you should get the fans to come on. This should work with both relays but make sure to only try what at a time. The terminal numbers will be located on the relays. Pay close attention to the lowspeed relay because when you jump the high and it works but jumping the low does not it may be the actual fans.

Oct 09, 2010 | 1998 Pontiac Grand Prix

1 Answer

2004 Galant: Only 2 speeds work on the heater a/c fan?...


might be due to a hot spot on the part of the switch mechanism inside of the instrument panel. when you turn the switch to various speeds, a small metal prong from the turn switch touches different metal contacts on the inside of the switch, each one is a different speed. hot spots or electric archs could have burnt out all but two of the speeds. filing or sodering the individual metal contacts may work, or you may have to buy a new fan speed switch. try a salvage yard. probably 30 dollars or so

May 18, 2010 | 2004 Mitsubishi Galant

1 Answer

My brake fluid has turned black, why?


the fan switch needs to be replaced it is worn out on the lower speeds ..maybe youre brake fluid needs to be flushed and new brake fluid put in

Dec 02, 2009 | 2002 Pontiac Grand Prix

1 Answer

'88 Camry AC buttons not working


fan speed controler could be bad, fan motor rellay could be bad.

Apr 14, 2009 | 1988 Cadillac Sedan DeVille

Not finding what you are looking for?
2001 Pontiac Grand Prix Logo

Related Topics:

58 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts

yadayada
yadayada

Level 3 Expert

75117 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7772 Answers

Are you a Pontiac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...