How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Skyvisions Your Own Question

Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 12924
Experience:  Toyota Master Diagnostic
Type Your Toyota Question Here...
Skyvisions is online now
A new question is answered every 9 seconds

TOYOTA COROLLA: temp gauge..radiator..the instrument panel..alternator

Resolved Question:

My TOYOTA COROLLA 1990 has both FUEL and WATER TEMP gauges going up further than they normally do.
The tank is almost empty but the fuel gauge says half full. The water temp gauge got off the top of the scale when in traffic but yet no steam out of the radiator.
Curious thing is no warm air from the heater, but the engine radiator is very warm.
This has just happened.
I suspect some sort of voltage regulator in the instrument panel that is now supllying too much current to the two meters.
Measured alternator voltage. 14.2 - slighly high too.

Is there a regulator inside the instrument panel (- before I take it out) ?

Any thoughts ?
Submitted: 4 years ago.
Category: Toyota
Expert:  Skyvisions replied 4 years ago.

Thank you for choosing JustAnswer and allowing me to help you resolve your Toyota questions!

 

The last time I had this happen I had to replace the gage unit as an assembly to fix it. If you are certain the temp is not hot and the coolant level is full and circulating the issue will be related to the unit in the combination meter. If you can post a picture of the gages I can tell if it is the same style. The only other test you can do is the resistance test of the sending unit in the tank and the temp sensor in the engine. 14.2 volts is normal.

 

Skyvisions

Customer: replied 4 years ago.
My problem is that both gauges are high but both have separate earths.
The only thing that is common is the 14v supply and the instrument panel circuitry.


Basic. 1.3 liter engine think its a E3 or something.

The instrument panel has MODEL E29 written near the bottom of the SPEEDO.
Gauges panel has door/heat-rear-window lights on the left
Seedo on left-centre
IGN, OIL, BRK lights in a square
FUEL and TEMP on right
RED-FOG light on far right side.

I'm happy that you've confirmed the supply voltage, so it looks like the instrument panel is coming out next !!

Do I "pay you now" or whats the procedure ???

Expert:  Skyvisions replied 4 years ago.

You can accept when you are satisfied that the help I have provided was useful. If you can get the Vehicle Identification Number I may be able to look up some other info. What country are you from? .

 

 

Skyvisions



Edited by Skyvisions on 4/6/2010 at 9:36 PM EST
Expert:  Skyvisions replied 4 years ago.
.
Customer: replied 4 years ago.
sorry for delay...its dark here in Ireland had to go find torch.
I'm good at most things...but seeing in the dark isnt one of them.


Thanks for all the info so far.
I owe you a few more 'dollars' by now.
Let me know how to do that.

VEHICLE ID IS JT1EOEE9000256425 MAYBE JT1E0EE9000256425

MODEL ID EE90R-AEMDSW

Expert:  Skyvisions replied 4 years ago.

Rt hand drive? Auto Trans? EFI 2EE engine?

 

No rush it just kept popping up on my end saying you where requesting me.

 

Skyvisions

Customer: replied 4 years ago.
Oh yes..right hand drive. Manual trans.

As for engine I dont know.
Its a 1296cc 4 cylinder
- maybe a sticker that said E12 on the rocker-cover one time - just dont know now



Expert:  Skyvisions replied 4 years ago.

That is a different combination meter then what is used here in the USA. If they both started acting up at the same time I would check the common earth points. then check the resistance of the sending units and make sure they are in line. My wiring info is limited on the world market Toyotas. If you would like I can transfer this to the UK category.

 

Skyvisions

Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 12924
Experience: Toyota Master Diagnostic
Skyvisions and other Toyota Specialists are ready to help you
Customer: replied 4 years ago.
Nahhhh relax... you've done enough for now.

Thanks,

I'll pull the dashboard apart and inspect.
I have a HAYNES manual (not as in-depth as I hoped) here and from what it says, the
two meters are on separate grounds with common supply so it has to be inside the
instrument panel.

OK - listen man... thanks for your help.
I'll call it closed.
Thank *YOU*
Expert:  Skyvisions replied 4 years ago.

You are welcome. If you need anything or a second opinion let me know.

 

Skyvisions

Customer: replied 4 years ago.

Hello there..

See PDF file for solution to this in pictures.

http://homepage.eircom.net/~pkearn/toyota-fuel-temp-guage-overread.pdf

Expert:  Skyvisions replied 4 years ago.

Nicely done, makes perfect sense, great pictures, good job.

 

Skyvisions

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
< Last | Next >
  • THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU! Jughead USA
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    278
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Auto Technician

    Satisfied Customers:

    278
    16 years of experience
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    ASE Certified Technician

    Satisfied Customers:

    167
    ASE & Bosch Master Tech. 30 years experience.
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    Toyota Technician

    Satisfied Customers:

    1132
    ASE Master Technician advanced level specialist. Wisconsin certified emissions state inspector
  • http://ww2.justanswer.com/uploads/CA/caprio23/2014-4-30_201741_20121205122939.64x64.jpg Anthony's Avatar

    Anthony

    ASE Certified Technician

    Satisfied Customers:

    373
    ASE Master Automobile Technician with over 20 years exp. in this field.
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    9
    Toyota tech. ASE Certified Technician
  • http://ww2.justanswer.com/uploads/SK/skyvisions/2012-6-9_23736_JACropped3.64x64.jpg Skyvisions's Avatar

    Skyvisions

    ASE Certified Technician

    Satisfied Customers:

    11403
    Toyota Master Diagnostic
  • http://ww2.justanswer.com/uploads/genchigenbutsu/2009-05-09_003043_cimg16431.jpg Genchi Genbutsu's Avatar

    Genchi Genbutsu

    Toyota Master Technician

    Satisfied Customers:

    3425
    Toyota Certified Master Diagnostic Technician, ASE Master Technician with L1 Advanced Engine