Question about 2001 Pontiac Bonneville

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2001 pontiac bonneville coolant fan run all the time

Serive engine light on also

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 5 Answers

SOURCE: Radiator Fan's Run All The Time

There are 2 things that will cause this to happen. 1. The thermostat needs to be replaced and, 2. The coolant sensor can be bad. When I had this problem, I changed them both at the same time, she been just fine since then. Also, I had the check engine light on, and got the code from AutoZone (it's free!)

Posted on Apr 15, 2009

hankfan18436
  • 62 Answers

SOURCE: 2003 Pontiac Grand Prix SE 6 Cyl - Cooling Fan Not Operating

the fan motor could just be bad, you can test this by removing the fan and connecting a wire to each terminal and to a battery. the wires hooked up one way will spin the fan and the other way will spin the fan backwards so you cant hook it up wrong. I hope that helps you out!

Posted on Jul 17, 2009

  • 15 Answers

SOURCE: 2001 pontiac cowl pack not fireing.

Here is a diagram of the firing order for you 3800 engine. Cylinders 1 and 4 are misfiring because the operate under the same "Coil Pack" and the coil pack has unfortunately gone bad. O'Reilly sells them for between $30-50 depending on the amount of warranty coverage you want. To replace, simply unscrew the screws that hold the coil pack in place. WAIT before unplugging the plug wires. Place the old coil pack and new coil pack next to each other, unplug one plug wire, then plug it to that same port on the new coil pack. then do the same for the other plug wire. Then screw your new coil pack in place, and start you car. should run fine!

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Posted on Dec 14, 2009

Mustgo
  • 2359 Answers

SOURCE: 97 pontiac bonneville se airbag light stays on all

Here's a quick check list for most common cost of SRS / Air bag problem.

Dirty contacts on driver and passenger seat belt buckles

Dirty contacts on seat belt connectors (under seats)

Dirty contacts on driver and passenger sides weight sensors (under seat)

Seat covers

Weight on passenger seat
(Example: grocery package trigger SRS / Air Bag light on the way home.)

I recommend you to pass an vacuum over the contacts and use CRC electronic parts cleaner to rule out connectivity problem.

I DO NOT recommend disconnecting the negative battery connector to clean the code(s).

Without the code(s) the dealer will takes "BILLABLE" time to reproduce the problem.

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Please rate my answer if it is useful to you.

Cheers,

Mustgo

Posted on Dec 16, 2009

  • 1 Answer

SOURCE: 2001 pontiac bonneville SSEi 3.8 l supercharged.

I have a 2000 Bonneville - I had a problem with the car stalling out - then it did not want to start back up. (When it did it would idle up and down and then die) I changed out the mass air flow sensor - now I have not had a problem. Good luck with it.

Posted on Mar 17, 2010

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1 Answer

Engine coolant Temperature gauge fluctuates


Watch the temp gauge when the electric radiator fans come on. The temp sensor that controls when the fan comes on may be faulty.

Oct 11, 2012 | 2000 Pontiac Bonneville

1 Answer

The cooling fans on my 2004 Pontiac Bonneville only run when the A/C is on. It is causing problems with Transmissionn shifting when they aren't running. I know the ****** problem is due to overheating...


The PCM is controlling the fans. It is looking at the coolant temp sensor. Once it sees the coolant temp get around 225 degrees it starts turning on the fans.

What temp does the vehicle get to?

Have you compared the reading on the gauge to the actually reading that the PCM is seeing with a scan tool? Many times the vehicle temp will be fine but the gauge will be wrong. Sometimes the opposite.

What engine do you have 3.8 or 4.6 liter?

Oct 02, 2011 | 2004 Pontiac Bonneville

2 Answers

The electric cooling fans on my 2004 pontiac bonneville do not turn on. What do I do?


I would check your relays first. Usually your problem is the relay. You may have a Service Engine Soon light on also. This can indicate that your coolant temperature sensor isn't working therefore the sensor isn't telling the computer to turn the fans on. Another quick easy test is to start the car and while it's idling either turn on the a/c full blast or the heater defroster. This should cause the fans to kick on for a length of time. (The length of time can very) If they do come on it would lead me to believe that you have a coolant temp sender problem. If they still don't come on after a few mins, I would definitely look into the relay.

Feb 07, 2011 | 2004 Pontiac Bonneville

1 Answer

I have a 1998 pontiac bonneville it over heats cause the fans want come on but when i unplug the coolant temp sensor they run all the time


Replace the coolant sensor,and bleed the air out of the cooling system.Sense you are in there,it would be a good idea to replace the thermostat.If this was at all helpful,please rate,thank you.

Jul 22, 2010 | 1998 Pontiac Bonneville

2 Answers

1993 pontiac bonneville electric cooling fans relay location


Hi, check.........I need to know which fuse runs the cooling... on this forum thread. Its not a fuse if the fan turns but could be fan relay. Unplug the coolant temp sensor lovated just below the thermostat houing and see if the fans come on. If they do, it might be the coolant sensor that is bad.

Apr 13, 2010 | 1993 Pontiac Bonneville

1 Answer

2000 Bonneville runs rough when cold


you need to get it scaned.auto zone will do it for free but most of the time it a o2 sensor or coolant sensor

Jul 17, 2009 | 2000 Pontiac Bonneville

2 Answers

Radiator Fan's Run All The Time


There are 2 things that will cause this to happen. 1. The thermostat needs to be replaced and, 2. The coolant sensor can be bad. When I had this problem, I changed them both at the same time, she been just fine since then. Also, I had the check engine light on, and got the code from AutoZone (it's free!)

Feb 27, 2009 | 2001 Pontiac Grand Am SE

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