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 thebesthonda Your Own Question

thebesthonda
thebesthonda, ASE MasterTechnician
Category: Honda
Satisfied Customers: 3084
Experience:  26 years experience
Type Your Honda Question Here...
thebesthonda is online now
A new question is answered every 9 seconds

1993 civic: coolant..speed, changed radiator, changed gasket..odometer

Customer Question

ok let see. i have a B16 A9 no VTEC in 1993 civic SI. show all the time to be hot at full almost, but the engine is running fine, the fan run at time and stop. Things i had make: changed sensor coolant, changed termoswitch, changed fan for speed, changed radiator, changed gasket in head cilinders, and refinish in presision taller, cheacked all electric harnees, changed odometer in dash.

so what is my meastake?
Submitted: 4 years ago.
Category: Honda
Expert:  thebesthonda replied 4 years ago.

Hello and welcome to justanswer. My name is XXXXX XXXXX X can assist you with this.

If you disconnect the temp sensor at the head, does the gauge fall back to cold? Also, what color wire do you have connected to the temp sensor?

 

graphic

Customer: replied 4 years ago.

thanks thebehonda.

 

answer:

If you disconnect the temp sensor at the head, does the gauge fall back to cold?

YES, already i did, and the gauge fall completly down, like cool.

 

Also, what color wire do you have connected to the temp sensor?

ok, this a few dificult to describe, my car is 93 and has been many time running, i think the real color is yellow with a line blue or green over there. i checked all the line, step by step into the harness, at the end install a tester ohmeter betwen the two terminal points and register 0,102 ohm digital tester. and checked the panel too.

 

 

 

 

Expert:  thebesthonda replied 4 years ago.

My pleasure. Yes, that is correct. It should be yellow/green.

 

Ok, we know the wire is correct and we know the wire is not shorted to ground since when you disconnect it, the temp gauge falls to cold, otherwise, it would stay hot.

 

Did it start doing this just after the engine swap, or all of the sudden?

Customer: replied 4 years ago.

Did it start doing this just after the engine swap, or all of the sudden?

 

NO, my car have original engine since a bougth, is japanese. i did not do a swap.

 

first time, i saw a hot condition almost a medium hot to 3/4 when was in a stop signal (example), after that return to almost 1/2 position in gauge. after that mantain 3/4 all the time, here began my troubles, but i identifiqued that the engine was in correct temperature, i think so.

Expert:  thebesthonda replied 4 years ago.

Ok, sorry. I didn't realize it was JDM.

 

I think we are actually looking at a problem with the engine. You seem to have verified all the electrical items, so let's be certain the engine temperature is correct.

 

When you let the engine warm up until the fan comes on, do both the upper and lower radiator hoses feel pretty close to the same temperature?

 

Do you have an "point and shoot" thermometer so you can check the engine temperature at various locations? If not, a regular thermometer submerged in the radiator fill hole will verify the coolant temp.

Customer: replied 4 years ago.

When you let the engine warm up until the fan comes on, do both the upper and lower radiator hoses feel pretty close to the same temperature?

 

I already changed thermostat part. look diagnostic acquired.

A- i started the engine in cool, the gauge is completly down. 0 time.

B- the gauge move to 1/4 at 2 minutes.

C- the gauge move to 1/2 at 10 minutes.

D- the gauge move to up almost red line at 18 minutes.

E- the fan start running at 24:00 minutes.

G- the fan stop running at 24:52 minutes. the gauge came down 1/8.

H- temperature increase to D again at 26:10 minutes.

I- cicles repeated since D, almost the same with diference times.

 

 

Do you have an "point and shoot" thermometer so you can check the engine temperature at various locations? If not, a regular thermometer submerged in the radiator fill hole will verify the coolant temp.

 

No sorry, i did not find anyone. i did: run engine 30 minutes and stop, living engine get cool a few, by 2 minutes, open radiator (no problem to open cap, no pressure, no gas, just a few liquid spended) and introduce a normal thermometer, it show 120° F, the maximus at thermometer is 150° F.

 

i did not try it again seen to be dangerous in case of the cristal blow up.

 

Expert:  thebesthonda replied 4 years ago.

How about the radiator hoses? I have seen radiators clog causing improper flow from the top hose to the bottom.

 

As for testing the sending unit, CLICK HERE The above readings you gave me don't correspond with the readings on this chart. Did you buy the sending unit from Honda or an auto parts store?

 

 

Customer: replied 4 years ago.

How about the radiator hoses? I have seen radiators clog causing improper flow from the top hose to the bottom.

 

i wrote at begining " i changed the radiator", so it´s not correspond at case, but thanks is a possibility to take.

 

i think, i have not change the water pump, because i observe the water flow ok. will the pump work impropely.

 

As for testing the sending unit, CLICK HERE The above readings you gave me don't correspond with the readings on this chart. Did you buy the sending unit from Honda or an auto parts store?

 

A- i can not open the short cut, so can you send me the link.

B- i read the technical manual of honda 92-95, and are to similar to my reading, but i never found the correspond manual with B16 A9, just D16, so thought are similars in part.

C- i bought it in ower honda dealer& distributor representative in my country, because i live in Costa Rica.

 

let me explain a few of me, i am electric ingenier, but my hobbie is the mechanical cars, i don´t have to much experience, but i research a lot of possible when i get something like this, so be patient with me please.

 

Expert:  thebesthonda replied 4 years ago.

Ok, I overlooked where you said you replaced the radiator.

 

I seriously doubt a water pump problem, although the temperature of the top and bottom radiator hoses would confirm circulation. Is the temperature pretty close to the same on both hoses?

 

No problem at all. You are doing great. Let me try to attach the link another way. See the image below.

graphic

 

 

 

Customer: replied 4 years ago.

Is the temperature pretty close to the same on both hoses?

when the engine start between 3 or 5 minutes only the down hose in radiator is hot, at 10 minutes the up hose began to increase temperature until the fan run the first time. after that if i stop the engine, both hoses are at same temperature.

 

i knew that because i passed sunday making test at radiator.

 

image: well is the same, that i have in my manual, so i made that test, is ok too, when i realized this test, was when i decided to follow all harness in order to find a damage in cables.

 

i figure out, in my manual is a D16 engine instead of B16 A9 JDM, but my readings was lower than in the image. and are opposed to the failure.

Expert:  thebesthonda replied 4 years ago.

Ok, at this point we are going to need to know the actual engine temperature. It sounds as though everything is in order, yet we still have this problem. We need to verify the engine is not truly overheating and the only way to do this is with a thermometer. If the engine is within specs, one of the parts you installed has to be bad.

Did you replace the entire gauge assembly or just the temperature section? Was it new or used?

Customer: replied 4 years ago.

well in order to test correctly the temperature, will i need a special tool? because the thermometer was old one in my father house, that i used, if this is the case i need to find or buy one. i don´t want to take a risk now, is hot water and pressure.

 

i asked to a friend to use my old parts, in a civic hacthback D16 Y8 Vtec, and are working, just a few difference in gauge metering, is showing low temperature than his parts, but without heatings troubles.

 

about my gauge metering, is second hand, i couldn´t find a new one, only if i ask by representative honda to carry from japam. and i just need to confirm that mine is in bad condition. in my friend car is not equal, but the old one work equal. SO!!

i have a headache with this.

 

sorry if i introduce you in this too, but i need help really, and you are the best.

 

sunday at night, i decided to running engine until stop by hot temperature but run almost 2 hours without trouble, so i stoped and go bed tired at the end.

 

will ECU produce this failure?

 

 

Expert:  thebesthonda replied 4 years ago.

Any thermometer that will go up 220 F will be fine. I use a point and shoot infrared, but have used the other types also. Just place it in the coolant and let the engine idle until the cooling fan turns on. If it is getting over 212, we have an overheating issue.

Measure the temperature and keep me posted. I will be here when you need me.

No, an ecu will not cause this problem.

Customer: replied 4 years ago.

ok, i know who has a "point and shoot infrared" FLUKE, but i do not know the maximun of temperature possible to check, he use it in air conditioners. i will visit today later.

 

send me a places of points to check in the engine when reach hot temperature. in this form you will completly sure of my measurements.

 

i appreciate your professional interest, thank very much. i will in contact.

 

 

 

Expert:  thebesthonda replied 4 years ago.

Sounds good. Check it at the thermostat housing, top and bottom radiator hoses, at the cylinder head and the top radiator tank.

 

The Fluke should work fine.

Customer: replied 4 years ago.
ok, will be tomorow if i get the instrument today, thank very much. what now?
Expert:  thebesthonda replied 4 years ago.
When you check the temperatures, simply repost to this thread.
Customer: replied 4 years ago.

HI MR. .... i don´t know your name.

yesterday went to look the FLUKE, but is only in range -70° F to 85°F is small tester for air conditioner only.

so i going to look for one today, i will be in contact.

 

my best regards.

 

P.D. tell me if i push ACCEPT now, will i continue talking to you?

Expert:  thebesthonda replied 4 years ago.

I'm sorry. My name is Chuck.

 

Sounds great. No, don't worry about the accept until we get the problem resolved. I'm in no hurry.

Customer: replied 4 years ago.

ok

just a observation, if you are thinking in check and fix the head or cilinder cap, in my first part i wrote " i refinished the head in a precision taller"; (Rectifed in precision workshop);i did that, because the mechanical man in HONDA/CR told to do that, was the first tink i did by recomendation of my mechanical man.

 

but it did not work, since this, almost a month ago, i have been doing many checks a test on the car in order to fix it. Now i am hoping you can help, i don´t want to loose this car in special, is partner for me, has run many kilometers with me.

 

I have in mind to do a swap as a last resort.

Customer: replied 4 years ago.

thanks Chuck. i did not see your name in your answer.

 

one question, is about honda partner CRX 87, with which the steering wheel can be replaced? if you can answer over here is just a question no more.

Expert:  thebesthonda replied 4 years ago.

What I'm actually trying to verify is if the temperature is actually getting to hot, or if we have a gauge that is mis reading. Also, checking the temperature at various points will let us know if the coolant is circulating properly.

 

 

Expert:  thebesthonda replied 4 years ago.
You want to know what other Honda steering wheels will fit an 87 CRX?
Customer: replied 4 years ago.
yes
Expert:  thebesthonda replied 4 years ago.
Any 84-87 CRX will interchange, also any 84-87 Civic will work. They look a little different, but will bolt on.
Customer: replied 4 years ago.

i am late sorry, but i have now the information request. i will included by diferents pictures, i think are clearly.

graphic

graphic

graphic

graphic

 

i used a METEX Temp. by link reader, is like a thin cable with sensor in a xtreme.

i hope this are more information for you

Expert:  thebesthonda replied 4 years ago.

That was awesome! Perfect! Ok, the good news is that your engine is not overheating. At no point is it over 212F so that is perfect.

 

That only leaves a problem with the sending unit, gauge, or the wiring. Disconnecting the sending unit and the gauge dropping to cold eliminates the wiring.

 

Testing the sending unit eliminates it.

 

That only leaves a problem with the gauge itself. There's nothing else left. The one you have is either bad, or the sending unit and the gauge are calibrated wrong between F and Celsius maybe.

Customer: replied 4 years ago.

well, when i was looking for new gauge, just a second hand i got, but this one, was instaled in a honda 95 automatic japaness version too. can it be diferent? in C° or F°, this look like the same.

what other form i have to confirm the temperature instead of use the gauge in my dash!

 

 

 

 

Expert:  thebesthonda replied 4 years ago.
Is your Civic an automatic or manual?
Customer: replied 4 years ago.
manual
Expert:  thebesthonda replied 4 years ago.
Ok, they are different between the automatic and the manuals for sure. There are different wiring configurations. I would try one from a manual.
thebesthonda, ASE MasterTechnician
Category: Honda
Satisfied Customers: 3084
Experience: 26 years experience
thebesthonda and 5 other Honda Specialists are ready to help you
Customer: replied 4 years ago.

ok

 

Expert:  thebesthonda replied 4 years ago.

Have a great evening.

Customer: replied 4 years ago.

yoy too, thnaks a lot.

Expert:  thebesthonda replied 4 years ago.
My pleasure.
Customer: replied 4 years ago.

hi chuck, some days we don´t talk.

 

well, my car is working in the same condition and he doesn´t stop run over the way.

i think may be the panel is failing, i need to find some iqual to interchange for.

 

do you find something about cable and guage information, relationing at model?

 

my best regards.

Expert:  thebesthonda replied 4 years ago.

So you haven't swapped the panel yet? If not, they are the same from a 92-95 Civic with manual transmission.

The only difference is that some have the rpm gauge and others do not. Either will work, but of course the one with the rpm gauge is the most popular.

Customer: replied 4 years ago.
yes my panel original is with RPM gauge, but i couldn´t get one yet, so i continue look for one.
Expert:  thebesthonda replied 4 years ago.
Ok.
Customer: replied 4 years ago.

good night chuck, i hope you read this.

 

i finished today to fix my car, is running like new. First at all, i send to you my sincerily apologies, you was right since the beginning.

 

i found a second guy with a car identiquly at mine and he was very attend to interchange parts.

the worst parts were: the thermostat switch, and the temperature sensor bulb. those were new, but was working incorrectly i guest, for that reazon i bought diferent brand "YENBO" germany, it fix like a mercedez, and are more exacts.

 

well, at the end i ought to change the fuel pump, because a diference in speed ralenty was imposible to fix, so this fixed ok.

 

well i aprecciated your time and patient, next time i will be more positive and follow your tips.

thanks very much.

 

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 very much for saving my daughter and her family a lot of money on her Honda. You are definitely on my list for future help. Thanks, again. Fred USA
< Last | Next >
  • Thank you very much for saving my daughter and her family a lot of money on her Honda. You are definitely on my list for future help. Thanks, again. Fred USA
  • I just heard from my mechanic. You were right...a $45.00 job. THANK YOU!! Your response was received in less than 10 minutes!! Linda B. USA
  • Your answers were clear and the diagrams were perfect. Dealer wanted $87 for an hour of labor and even I did it in 15 minutes. Ed USA
  • HONDA PLATINUM was great. I really appreciate his help. I was ready to trade my new Honda until he told me to wait until I got 3,000 miles on it and my gas mileage would get much better. Summer USA
  • I took the Power Steering O-Ring service bulletin linked from JustAnswer to my Acura dealer, and not only did they no-charge the o-ring, they also replaced the power steering pump at no cost. Gary R Stevenson Ranch, CA
  • 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
 
 
 

Meet The Experts:

 
 
 
  • Kyle N.

    Honda Master Tech

    Satisfied Customers:

    3627
    Honda Dealer Tech, ASE Master Auto Tech
< Last | Next >
  • http://ww2.justanswer.com/uploads/hondatech/2010-05-03_025935_resized_work_pic.jpg Kyle N.'s Avatar

    Kyle N.

    Honda Master Tech

    Satisfied Customers:

    3627
    Honda Dealer Tech, ASE Master Auto Tech
  • http://ww2.justanswer.com/uploads/hondacb77/2008-10-27_165606_me3.jpg John G.'s Avatar

    John G.

    Honda Technician

    Satisfied Customers:

    2643
    Dealership tech since 1982. ASE and Honda Master Technician.
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Technician

    Satisfied Customers:

    204
    16 years of experience
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ron's Avatar

    Ron

    ASE Certified Technician

    Satisfied Customers:

    175
    ASE Certified Tech 34 years.
  • http://ww2.justanswer.com/uploads/EU/eurotec/2012-6-11_13153_mpjaphoto.64x64.JPG Marty's Avatar

    Marty

    Bosch Master Tech

    Satisfied Customers:

    113
    Bosch Certified Master Technician
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    ASE Master Technician

    Satisfied Customers:

    1112
    ASE Master Technician advanced level specialist. Wisconsin certified emissions state inspector
  • http://ww2.justanswer.com/uploads/TH/thebesthonda/2011-1-15_04510_Photo022009005.64x64.jpg thebesthonda's Avatar

    thebesthonda

    ASE MasterTechnician

    Satisfied Customers:

    2299
    26 years experience