Go Back   Honda Civic Forum > Honda Civics by Generation > 7th Gen > Mechanical Problems/Vehicle Issues and Fix-it Forum
Register Forgot Password?
Register Photo Gallery FAQ Members List Search Today's Posts Mark Forums Read Experience Used CarsGarageVendor Directory
Welcome to Honda Civic Forum

Mechanical Problems/Vehicle Issues and Fix-it Forum If you've got a problem you just can't figure out, a noise you can't diagnose, or a Check Engine Light that won't go away, ask about it here!


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
Old 02-22-2011   #1 (permalink)
Registered!!
 
Join Date: Oct 2010
Posts: 7
iTrader: (0)
Rep Power: 0
Vinnx is an unknown quantity at this point
Temperature Gauge Fluctuating

So today I was driving along, there was pretty heavy fog, I turned the car on, and did 2 laps around the community at very low rpms to warm up before I head off. I had the inside air temp set for heat, turned the fan about mid way, and turned on the rear defogger. About 15 mins into my journey when I looked down to check my speed my temperature gauge was in the RED, nothing felt different with the car, but I came off the gas and slowed down and made a right turn and pulled over the side of the road and shut the car off. At this time I realized my hazard lights don't work.. I touched the top of the hood, but it felt cold, then I opened the hood and that too didn't seem to hot :/ I checked my oil and that seemed fine, just yesterday I added 1qt of Mobile 1 Synthetic oil in. Couldn't check the coolant cuz the car was hot. But after the car sat for a while I started it, and after a while the temperature started to rise then fell a little, then I turned it off again. Now I turned it back on and went for a test drive, the temperature gauge was... moving around slowly I watched it rise to 3/4 to overheat then fall back to the half way point over the course 4 seconds. So I drove the car back home and only twice on my journey did the gauge move weird, it rose a little then fell, going about 40mph. But then on the main road I just said screw the gauge downshifted into third and gave it some gas to pass some trucks and went about 80 mph, and the temp didn't even budge! I slowed down, made my left, floored it in second, took it to red line and again the temperature didn't budge! But when I entered the community, after about 1 mins of driving at 25 mph the temp started to rise then fell a little, then started to rise while I was pulling in to park.

Ok, so I feel pretty confident it's probably faulty wiring or temp gauge, or sensor. But any ideas of how to diagnose the problem my self to figure out where the problem lies? I really don't want to drive the car knowing my temperature gauge isn't working properly..
Vinnx is offline   Reply With Quote
Old 02-22-2011   #2 (permalink)
Registered!!

 
lazlong's Avatar
 
Join Date: May 2010
Location: Funkytown, Tx
Posts: 3,662
Points: 17,778, Level: 84
Points: 17,778, Level: 84 Points: 17,778, Level: 84 Points: 17,778, Level: 84
Level up: 86%, 72 Points needed
Level up: 86% Level up: 86% Level up: 86%
Activity: 58.6%
Activity: 58.6% Activity: 58.6% Activity: 58.6%
iTrader: (0)
Rep Power: 93
lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of
Re: Temperature Gauge Fluctuating

1. Push and hold the trip/reset button
2. Turn the lighting switch on
3. Turn the ignition to ON(II)
4. Within 5 seconds, turn the lighting switch OFF, then ON and OFF again
5. Within 5 seconds, release the trip/reset button, then push and release the button 4 times

The beeper sounds 5 times. Then all the indicators blink. Then the odo/trip segment blinks 5 times. Then all the needles sweep from min to max back to min. Then it will run a communications check and display either all 8's or the word error. 8's are good, error means the connection between the cluster and ECM/PCM is bad. If anything doesn't work properly in test mode replace the cluster.
lazlong is offline   Reply With Quote
Old 02-22-2011   #3 (permalink)
Registered!!
 
Join Date: Oct 2010
Posts: 7
iTrader: (0)
Rep Power: 0
Vinnx is an unknown quantity at this point
Re: Temperature Gauge Fluctuating

Ok I tried that 4 times word for word and nothing happened.. maybe I'm missing something?

Any ways I took the car for another test drive, took it around the roads, went to 70mph held it, took it into the high rev's slowly a few times, and nothing happened... the car felt fine, and the temp didn't shift at all. Then after all this I took it around the neighborhood around 20-25 mph, and the temperature started to climb, then drop, another lap, it rose fairly high, then dropped. Something is faulty ><
Vinnx is offline   Reply With Quote
Old 02-22-2011   #4 (permalink)
Registered!!

 
lazlong's Avatar
 
Join Date: May 2010
Location: Funkytown, Tx
Posts: 3,662
Points: 17,778, Level: 84
Points: 17,778, Level: 84 Points: 17,778, Level: 84 Points: 17,778, Level: 84
Level up: 86%, 72 Points needed
Level up: 86% Level up: 86% Level up: 86%
Activity: 58.6%
Activity: 58.6% Activity: 58.6% Activity: 58.6%
iTrader: (0)
Rep Power: 93
lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of lazlong has much to be proud of
Re: Temperature Gauge Fluctuating

I just tried it and it works fine. Use your right hand to hold the trip/reset while you work the lighting switch and ignition. And by lighting switch I mean the one for exterior lights, not your dome light.
lazlong is offline   Reply With Quote
Old 03-01-2011   #5 (permalink)
Registered!!

 
Join Date: Nov 2010
Posts: 3
Points: 605, Level: 12
Points: 605, Level: 12 Points: 605, Level: 12 Points: 605, Level: 12
Level up: 10%, 45 Points needed
Level up: 10% Level up: 10% Level up: 10%
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%
iTrader: (0)
Rep Power: 0
blackrandom is an unknown quantity at this point
Re: Temperature Gauge Fluctuating

I tried this on my car too and it worked, I had to do it a few times because the trip/reset button wasn't working very well. I got all communications working properly, still have to check for a bad head gasket though which I hope it is not
blackrandom is offline   Reply With Quote
Old 03-01-2011   #6 (permalink)
Whachya lookin at?



 
BlueEM2's Avatar
 
Join Date: May 2009
Location: Canada
Age: 29
Posts: 6,297
Points: 85,524, Level: 100
Points: 85,524, Level: 100 Points: 85,524, Level: 100 Points: 85,524, Level: 100
Level up: 0%, 0 Points needed
Level up: 0% Level up: 0% Level up: 0%
Activity: 80.0%
Activity: 80.0% Activity: 80.0% Activity: 80.0%
iTrader: (1)
Rep Power: 171
BlueEM2 has a reputation beyond repute BlueEM2 has a reputation beyond repute BlueEM2 has a reputation beyond repute BlueEM2 has a reputation beyond repute BlueEM2 has a reputation beyond repute BlueEM2 has a reputation beyond repute BlueEM2 has a reputation beyond repute BlueEM2 has a reputation beyond repute BlueEM2 has a reputation beyond repute BlueEM2 has a reputation beyond repute BlueEM2 has a reputation beyond repute
Dont think so WTF is twitter? Pardon? Im so confused... what box? ...
Re: Temperature Gauge Fluctuating

It's probably not a faulty sensor. You probably have air in your coolant system. You need to bleed the coolant system and find out how the air got in there. Is your overflow at the correct level or is it too full ? too empty ?

Don't just to a head gasket conclusion when it could just be a rad cap
__________________
2007 Ford Edge -- Stock!
2005 Honda Civic EX Coupe, almost stock!

Lower Ball Joint DIY
How to set up TDC during timing belt install
Overheating? Here is why.
Head gasket + timing belt DIY! Incomplete but useful!


With how old this forum is, if everyone searched... Nobody would post any more
BlueEM2 is online now   Reply With Quote
Old 07-15-2012   #7 (permalink)
Registered!!

 
Join Date: Jul 2012
Posts: 1
Points: 752, Level: 14
Points: 752, Level: 14 Points: 752, Level: 14 Points: 752, Level: 14
Level up: 52%, 48 Points needed
Level up: 52% Level up: 52% Level up: 52%
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%
iTrader: (0)
Rep Power: 0
harpf is an unknown quantity at this point
Re: Temperature Gauge Fluctuating

Quote:
Originally Posted by BlueEM2 View Post
It's probably not a faulty sensor. You probably have air in your coolant system. You need to bleed the coolant system and find out how the air got in there. Is your overflow at the correct level or is it too full ? too empty ?

Don't just to a head gasket conclusion when it could just be a rad cap
I have the same basic problem - erratic temperature indications 2005 Honda civic 1.7.

Started by changing the thermostat (no help). It seems to get hot and cold to fast to be engine problem esp with the rapid drop in temp.

My next step was washing out the sensor connector with 'boe shield' T-9. The fault has been not seen since (half hour test drive, via subdivision, hiway, city and back. If it comes back, my next step is to put a thermocouple at the temp sensor and run the wire back into the car to see if the intermittent 'hot' indication is real.

- If temp indications are real I'll change the cap, and make sure the overflow system is working correctly.
- If the indication is the problem I'll change the sensor.




Last edited by harpf; 07-15-2012 at 09:08 PM. Reason: Typo
harpf is offline   Reply With Quote
Old 07-08-2013   #8 (permalink)
Registered!!


 
Join Date: Jul 2013
Posts: 1
Points: 59, Level: 1
Points: 59, Level: 1 Points: 59, Level: 1 Points: 59, Level: 1
Level up: 18%, 41 Points needed
Level up: 18% Level up: 18% Level up: 18%
Activity: 5.3%
Activity: 5.3% Activity: 5.3% Activity: 5.3%
iTrader: (0)
Rep Power: 0
Robdynamite is an unknown quantity at this point
Re: Temperature Gauge Fluctuating

Have the same problem did that solve the issue? Using the "bowshield" where exactly did you spray the bowshield?

I have a service light on which started to come on but goes on and off.


Codes:
PO135 - O2 sensor Heater Circuit Malfunction Bank 1 Sensor 1
PO134 - O2 sensor Circuit No Activity Detected Bank 1 Sensor 1
Robdynamite is offline   Reply With Quote
Old 07-12-2013   #9 (permalink)
Civicless

 
noJeepshere's Avatar
 
Join Date: Jun 2013
Age: 29
Posts: 62
Points: 1,112, Level: 18
Points: 1,112, Level: 18 Points: 1,112, Level: 18 Points: 1,112, Level: 18
Level up: 12%, 88 Points needed
Level up: 12% Level up: 12% Level up: 12%
Activity: 8.7%
Activity: 8.7% Activity: 8.7% Activity: 8.7%
iTrader: (0)
Rep Power: 0
noJeepshere is an unknown quantity at this point
Re: Temperature Gauge Fluctuating

I have a similar problem to the OP, the gauge will climb towards the red zone only around idle. I tested it in a parking lot today, let it sit (after fully warmed up) and waited for the fans to come on (2 min) yet the needle climbed, even after I turned the heater to full hot. There wasn't even warm air coming out of the vents. I revved it to 2,500-3,000 rpm and the vents suddenly became hot and the needle dropped to where it should be.

Back at idle the vents cooled off and the needle started climbing again, so I went to the top of a hill and let it warm up again (needle in top half of range) and coasted down the hill for nearly a half mile (I have a manual trans so it's ok) and it did not cool off until I put it in gear and let it engine brake at 3,000 rpm, at which it promptly cooled down to normal.

I know it's not lack of cooling capability, as I can climb a mountain pass with it in 3rd gear, 3,000 rpm, full throttle, a/c on, 95* day, and the needle will barely get over the halfway point. I'm thinking either air in the system (flushing on Tuesday with new thermostat and rad cap) or a bad water pump. I'm hoping it air in the system and flushing it will fix it.
noJeepshere is offline   Reply With Quote
Old 07-12-2013   #10 (permalink)
7th Gen Civic DIY Enthusiast!


 
Matt_75's Avatar
 
Join Date: Sep 2011
Location: Honolulu, HI USA
Age: 38
Posts: 748
Points: 4,804, Level: 44
Points: 4,804, Level: 44 Points: 4,804, Level: 44 Points: 4,804, Level: 44
Level up: 27%, 146 Points needed
Level up: 27% Level up: 27% Level up: 27%
Activity: 17.2%
Activity: 17.2% Activity: 17.2% Activity: 17.2%
iTrader: (0)
Rep Power: 44
Matt_75 is a jewel in the rough Matt_75 is a jewel in the rough Matt_75 is a jewel in the rough Matt_75 is a jewel in the rough
Re: Temperature Gauge Fluctuating

Air in the system or a blown head gasket. Try to bleed it and see if the problem returns.
__________________
Common sense is so rare these days that it should be classified as a super power.
Matt_75 is offline   Reply With Quote
Old 07-20-2013   #11 (permalink)
Civicless

 
noJeepshere's Avatar
 
Join Date: Jun 2013
Age: 29
Posts: 62
Points: 1,112, Level: 18
Points: 1,112, Level: 18 Points: 1,112, Level: 18 Points: 1,112, Level: 18
Level up: 12%, 88 Points needed
Level up: 12% Level up: 12% Level up: 12%
Activity: 8.7%
Activity: 8.7% Activity: 8.7% Activity: 8.7%
iTrader: (0)
Rep Power: 0
noJeepshere is an unknown quantity at this point
Re: Temperature Gauge Fluctuating

Definitely air in the system. When I pulled the thermostat housing, the rubber gasket/o-ring was brittle and cracked. Not sure what happened there... and the system had green coolant in it, which I guess was put in with a head gasket replacement. Funny the things you learn when you start digging... I made sure to flush it well and put Asian vehicle specific coolant (safe for aluminum engines) in it, with a new cap and thermostat. After getting all the remaining air out of the system and taking a test drive, I let it sit nearly a 1/2 hour with no issues at idle.
noJeepshere is offline   Reply With Quote
Old 07-21-2013   #12 (permalink)
Registered!!


 
Join Date: Sep 2010
Posts: 293
Points: 3,401, Level: 36
Points: 3,401, Level: 36 Points: 3,401, Level: 36 Points: 3,401, Level: 36
Level up: 34%, 99 Points needed
Level up: 34% Level up: 34% Level up: 34%
Activity: 0%
Activity: 0% Activity: 0% Activity: 0%
iTrader: (0)
Rep Power: 51
anibis will become famous soon enough anibis will become famous soon enough
Re: Temperature Gauge Fluctuating

I hope the problem doesnt return, but knowing how these cars eat through HG's I would bet it will.
anibis is offline   Reply With Quote
Old 07-21-2013
CivicForums
Honda Civic




Paid Advertisement
 
 
 
Reply


Tags
2000 , 37 , camaro , civic , erratic , fall , faulty , fluctuation , gauge , honda , moving , rise , si , slight , temp , temperature

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

  
User Login
Our Partners


used new
Top 10 Threads
Maintenance required light
Who's had a bad transmission? *UPDATED*
Is your Check Engine Light, SRS Light, Or ABS Light On? If so, Please Read
P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
Your answer may be here! TSB / Honda Complaint Address / Etc...
DRL Problem
DIY: replacing power window motor assembly on my civic coupe
If you have idle issues look here before posting!!!
ODB II Codes
Overheating common causes - reference


All times are GMT -5. The time now is 08:30 PM.

   
Advertising - Privacy Statement - Terms of Service - Jobs
Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.5.2
All Content Copyright 2007 CivicForums.com
Emails Backup