Question about Cars & Trucks

1 Answer

'05 Grand Am 3.4 V6 Temp Gauge not Working all of a sudden.

Just did a cylinder head job on my 05 Grand am. Got everything put together. Drove it two days and all of a sudden the temp gauge dropped to 100 and sits. Both fans are running full speed. I changed the Temp Sensor and the same is still happening. Thermostat is only 2 weeks old. Is there a fuse? Is it the Thermostat? Temp sensor? Any suggestions?

Posted by on

  • Stephen Sickels
    Stephen Sickels Apr 07, 2015

    No check engine light. Coolant was at the top of the whole when I changed sensors last night.?? Would the computer need to be cleared? It is possible that I have a bad sensor as it was one I had in a previous vehicle.

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Cars & Trucks Master
  • 21,873 Answers

Sounds like a temp sensor or wiring problem.
You may only have one sensor for both the gauge and the engine computer.
If the computer temp sensor fails, or is not sending a signal to the engine computer, the fans will run as a precaution to keep the engine from overheating.
If you have replaced the correct sensor, it could be a wiring problem, or the engine coolant could be low enough to not touch the sensor.
If the coolant sensor is not sending a signal, the check engine light should also be on.

Posted on Apr 07, 2015

Testimonial: "Quick Clear answer. Thanks Stephen for your help."

  • Stephen Sickels
    Stephen Sickels Apr 07, 2015

    No check engine light. Coolant was at the top of the hole when I changed sensors last night.?? Would the computer need to be cleared? It is possible that I have a bad sensor as it was one I had in a previous vehicle.

  •  Stephen
    Stephen Apr 07, 2015

    I would want to know what the sensor is sending to the computer. I have a scanner that would tell me if the sensor is working. If you unplug the sensor, the check engine light would come on, and the fans would run. So if the fans are running, and the light is not on, something is not right. You could have a faulty sensor, or perhaps the wrong sensor. In years past, you would have two, one for the gauge and another for the engine computer. You might try unplugging the sensor and see if the check engine light comes on.

×

Ad

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

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I need the easiest possible directions to replace the coolant temperature sensor in my 1999 Chevy Lumina ltz 3.8 v6 car please.


The coolant sensor temperature is usually found just beneath the cylinder head, on the engine block.

You just disconnect the 1-2 wires and then undo it with a wrench.
The sensor will look like one of these:
1999 Chevy Lumina ltz 3 8 v6 coolant temperature sensor Google Search

Just be aware .. you may have TWO such sensors on your vehicle.

One sensor (usually with 3-4 electrical pins) is near the thermostat and works in conjunction with other sensors to regulate fuel/air according to engine temperature.

The other type of sensor is in the block near the cylinder head. It sends a signal to the temperature gauge on your dashboard ONLY. If your temp gauge constantly reads too hot or too cold .. this one is the culprit.25939754-r0ibht2u2t2rhetbyfvb2pry-5-0.jpg
If it's a running fault .. speed .. rough running .. fuel. It may look like this:
25939754-r0ibht2u2t2rhetbyfvb2pry-5-1.jpg

Nov 03, 2015 | Cars & Trucks

3 Answers

I HAVE DONE EVERYTHING FROM ENGINE HEAD CHECK PRESSURE TEST RADIATOR REPLACEMENT, THERMASTAT REPLACEMENT, WATERPUMP REPLACEMENT. THE COOLING FANS KICK IN, AND THE CAR STILL RUNS HOT ...WHAT'S NEXT?


ok , but no engine stated. which one>??
hot = lying dash gauge or real hand held pyro IR gun? a $20 tool.
did the scan tool ECT reading show too hot, Yes/no.

no new cap, really?
is the cam timed right?
is the spark timed right.?
is the ECU stuck in limphome mode? (huge heat to cylinder walls)
thermostat not upside down.
or thermostat not with bleed hole up hill trapping air below
making it lie and the dash gauge lie too, (the gauge can not measure air, period)

id not do squat with no IR gun. not me. its super accurate too.
and dirt cheap and saves burned hands,
and finds clogged rad tubes saving useless $250 new rad.
one tool. use it. and win.


i this this dang I6 engine, that loves to trap air?
had 3,now, over 500k miles on them. 1988 to present.
and never overheated but once, pin hole in heater core hose
ran bypass and drove home.
i have a 08 wrangler 6sp, 3.8L v6 , nice rig. easy to fix too.

there are 2 parts. (3 really)
engine make too much heat, (limphome or timed wrong)
air in system.
cooling system.

the rad pressure test pass and the green/blue test passes

no water in engine oil
no oil or carbon seen in the engine coolant , all places look.

how hot, ??????
200f
260F
280F"?
numbers matter, in all ofscience. they talk to you.
at what exact temp did the fans, kick in,?
the FSM shows you this, and how to do that. how to make sure the
fans kick in happen, RIGHT. some are 2 staged with A/C.
not just kick. (when)

Aug 29, 2014 | 1997 Jeep Grand Cherokee

1 Answer

How do I remove the cylinder head on a 2.2 engine?


You take the bolts out of it but then you have to put it back together and you will needs new head bolts, a torque wrench, the torque specs, new head gasket.......It's a big job if you know nothing about working on a car engine. Actually replacinbg the head gasket is the easiest part of the job. getting to the head and getting everything disconnected and MARKED is what takes the time.

Oct 26, 2013 | 2006 Chevrolet Cobalt

1 Answer

Overheating


Check that the wire to the temp sender unit has not come off and is shorting out on the head.It it is it will read as overheat on the gauge straight away

Jan 27, 2013 | 1998 Volkswagen Beetle

2 Answers

Where is the coolant temp sensor on a suzuki grand vitara


If it's a 2.0 it'll be on the back of the cylinder head on the intake side, sort of between the engine and the firewall - it is a single unit with two separate and independent sensors, one for the dash guage, the other for the ECU.

14125348-oblnfpr4i2sne222pzvsk125-4-0.jpg

Aug 26, 2012 | Suzuki Grand Vitara Cars & Trucks

1 Answer

'92 Nissan hardbody temp gas gage don't work any


Check for the the temp unit on cylinder head. put the wire on cylinder head and check if the gauge is working

May 17, 2012 | 1992 Nissan Pickup

1 Answer

2002 Malibu,V6, approx 120,000 miles. Air cond, heater & defrosters do not work. Couple of days ago, car overheated suddenly. Drove car after water was added to resevoir. Drove & temp spiked &...


white smoke usually means blown head gaskets,have radiator fan checked,water pump,check coolant for oil in coolant,could be blown in between cylinders,causing coolant to go out exhaust,have compression check done on cylinders.

Dec 31, 2010 | 2002 Chevrolet Malibu

2 Answers

Coolant over flowing while driving, not overheating, 2000 deawoo


change cylinder head gakate and check cylinder head that not bend from heat.

Jan 16, 2009 | 2000 Daewoo Nubira

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

100 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts

yadayada
yadayada

Level 3 Expert

76846 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22246 Answers

Randy Ohler

Level 3 Expert

14585 Answers

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

Answer questions

Manuals & User Guides

Loading...