Question about 1996 Pontiac Grand Am

1 Answer

My 1999 pontiac grand am shuts down when it reaches 3 knot past the middle temp gage never fails .i change o2 censor ,fan relays and brake booster. it's a 2.4

Posted by on

  • jmottavega1 Jul 18, 2009

    i got a new ecu matching the vin and it still shuts down . new spark plugs, new intake gasget and new heat sensor.

  • jmottavega1 Jul 18, 2009

    where are the coils located?



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 2,187 Answers

The ECU have may have detected an error. A scanner would tell you the error code is to determine accurately the problem. If the gauge checks out OK, the car's computer may be faulty that it causes the shutdown early. If you know someone who has the same car and engine and try out the ECU on your car to check if it is not a ECU malfunction. If it is not the ECU it could be a blown head gasket or worn out. It could also be the ignition system, the sparks may not be firing when the temp increases on your engine. An ignition coil or distributor that is on its way to break down may nor work properly due to heat. You may want to have it tested either by observing the sparks or trying out another unit, a spare or a borrowed unit.

Posted on Jul 18, 2009

  • Nicolo Carlo Parazo Jul 18, 2009

    I would suggest to focus on the other electrical part such as the ignition coil, distributor and the sparks. Heat would affect the performance, especially the coils and the springs of the distributor. A test unit you can borrow would shorten the time of troubleshooting as well as save you from buying a unit and doing a trial and error.

  • Nicolo Carlo Parazo Jul 18, 2009

    its a white plastic housing normally bolted to the aluminum cover.



1 Suggested Answer

  • 2 Answers

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

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.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

2004 Pontiac Grand AM Cooling motors wont work.

Can you jumper the relay to make the fans run ? The computer sends a ground to the relay to power the fans when the coolant temp reaches 220 degrees or when the ac pressure reaches 200 psi on the high side.

Jul 29, 2012 | 2004 Pontiac Grand Am

3 Answers

1999 pontiac grand am cooling fans not working

Thanks for choosing FixYa and welcome to the site. If your coolant fans are not working, you need to check your fuse first. Make sure it is not blown and the fuse housing is getting power. You can test the wires on the fan to see if the fan is getting power also. You may have a bad wire or break in the harness. If you have power to the fan after this test, go ahead and change out the fan. You can also run a wire directly to the battery to the fan. If the fan is good, it will come on when the wire touches the battery.

Jun 06, 2011 | 1999 Pontiac Grand Am GT

2 Answers

Engine does not reach normal operating temp.

Pretty likely either the thermostat is stuck open or the electric fan is staying on. Replace thermostat or replace fan relay, depending upon what you find.

May 19, 2011 | 1999 Buick LeSabre

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

My jeep 1999 has an electric fan and it keeps

have you checked that the rad is clear and air can flow through it freely,,,is it blocked up so the water cant flow through it freely ,is the fan realy working or sezed up so it cant turn round??
if all this is ok, they changing the temp censor or for a test run,,,short the fan temp censor plug out with a bit of whire this should start the fan up,,,(watch your fingers when doint this) go for a run to see if the motor stayes cool

Jun 29, 2010 | 2000 Jeep Grand Cherokee

1 Answer

Coolant fan not coming on, change motor, relay, censor & fuse sti

if the fans are not broken, here is a way to check them--- disconnect fans at wiring connection, then run a wire from positive on fans to positive post on battery,then run other side to ground if nessesary. if the fans are ok they will turn on. if not the coolant temp sensor is bad. or a short in wiring.

Aug 22, 2009 | 2000 Pontiac Sunfire

2 Answers

95 grand am radiator fan only runs with AC on

Cooling Fan Temp Sensor is the First thing You Check (with what you have described) Cooling Fan Should ALways come On When The A/C is turned On as A/C Adds A Load to Engine, If Temp Sensor is Faulty it Will Not Give GROUND Signal to ECM >For COOLING FAN >RELAY to Give ground and turn ON The Fan.
There ARE 2 temp Sensors that Serve Different Purposes 1 is for Dash READING GAGE & Or TEMP LIGHT the Other is For ECM or Fan Relay (SAME Thing) you Said>""can disconnect the sensor and fan continues to run" < This Leads me to think you Changed the Wrong One. Not Questioning your Skills Just Here to Help.
TEMP SENSOR FOR 3.1L V6 is Located upper RH rear of engine compartment, near exhaust system. Temp SENSOR for 2.3L Engine is Located in LH rear of engine compartment.
I Hope this Helps Lead you to a NON-OVERHEATING Pontiac.
Good Luck and Have A Great Evening. rejakwilson

Feb 04, 2009 | 1995 Pontiac Grand Am

Not finding what you are looking for?
1996 Pontiac Grand Am Logo

62 people viewed this question

Ask a Question

Usually answered in minutes!

Top Pontiac Experts


Level 3 Expert

79186 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8836 Answers

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

Answer questions

Manuals & User Guides