Newbie to Mr2s - Page 2 - MR2 Owners Club Message Board
Reply
 
LinkBack Thread Tools
post #21 of 25 (permalink) Old January 8th, 2017, 23:31 Thread Starter
Registered User
 
Join Date: Dec 2016
Location: Mountain City, Tn.
Posts: 11
OldTrader Rating: (0)
Random Tox, thank you very much for the manuals. i searched and searched but really couldnt find much. This will really help.

Ok, latest on the Mr Twotle saga. The wife and I had to go to Johnson City(TN)(30+ miles away) first of last week. Nice day so we took the mr2. It did the usual, not changed into over drive. This was the wife's first drive leaving Mountain City going west. There's a section of road that we think is very comparable to The Snake(hwy 421) that we call The Jungle. A very tight, twisty, fun rural road. The mr2 never made it out of 3rd gear but it was fun. Then on the highways, 3rd gear, revving at 3k rpm at 55 or so, really made the fuel economy suck. But once we just about got to our first destination in Johnson City, it SHIFTED into OD. By this time, the engine was at temperature. Since we had 3 places to go and all were withing 2 blocks, we never got up to speed for OD change. Then, on the way back home, this car shifted like a dream. About 2k rpm doing 60+ mph. Never used a drop of fuel(it didnt look like). We really, REALLY liked the feel of the car then. So I'm guessing the engine temp just got up to normal range from the long drive.
Now, the gauge, after the first 10-15 miles, it raised up above the C, but only for a very short time(a few minutes), then dropped back down below C. It stayed there the whole day. Then when we get back home, I get out to close the gate and I hear the radiator fan on. I'm suspecting that the drive up our hill made it 'struggle' a bit(we live on a mountain). But when I walked back down the drive to the car, fan was off and there was NO odor of over heating.
Oh, since we were over in JC, I called the Toyota dealer to inquire if they had a stock thermostat. They didnt and couldnt get one until (last) Friday. That meant another 35 mile(each way) drive. Plus, our weather was forecast to be in single digits and SNOW starting, so no trip to JC. We did get about 7-8 inches of snow so now we're stuck on the mountain for a few more days. Anyway, with the cold and snow, the thermostat will have to wait as the car's sitting under the carport out of the weather. I have an aftermarket thermostat which I want to try first and see what happens. If it does the same, I'll order a Toyota one and change it then. But with the nearest Toyota dealer 35+ miles way, it takes time.
So, thanks again for all the input. It has to be just the thermostat. If it was anything else, it would not shift into OD after driving 30 miles and work like a charm.
As it warms up and we change the thermostat, I'll update. Thanks again.
Racing Dreamz is offline  
Sponsored Links
Advertisement
 
post #22 of 25 (permalink) Old January 10th, 2017, 11:29
Registered User
 
Join Date: Aug 2008
Location: Salt Lake City
Age: 49
Posts: 854
OldTrader Rating: (4)
Garage
I was looking at the AT troubleshooting section of the BGB and noticed the first step is very easy and will eliminate a lot of possibilities if false. Just disconnect the AT computer and see if it goes to OD while manually shifting up through the range. A quick test, though I do think you problem lies elsewhere in the thermostat or engine temp sensor.



The radiator fan is controlled by the radiator temp sensor, and it's normal for the fan to kick on during a drive and remain running for a minute after shutdown. Normally you'll notice it in stop/go traffic where the airflow is interrupted. The fact that this is the first you've experienced it does indicate thermostat is stuck open. Common result of cheap thermostats.

Note that there is also an engine bay temp sensor that controls the side port fan in a similar manner.
random_tox is offline  
post #23 of 25 (permalink) Old January 10th, 2017, 22:58 Thread Starter
Registered User
 
Join Date: Dec 2016
Location: Mountain City, Tn.
Posts: 11
OldTrader Rating: (0)
Where is and how do I disconnect the AT computer? Then, how do I test the circuit voltage?

I'll first change the thermostat first and go from there. This is getting technical over my head.
Racing Dreamz is offline  
post #24 of 25 (permalink) Old January 19th, 2017, 01:56 Thread Starter
Registered User
 
Join Date: Dec 2016
Location: Mountain City, Tn.
Posts: 11
OldTrader Rating: (0)
UPDATE!!! We have OD!!!

Finally, I got the thermostat replaced. Sorry it's taken so long to update. Anyway, after(I have to confess severe stupidity here) finally finding the damn thermostat, I decided that I didnt want to replace it in my driveway. So I took the MR2 to a shop that our charity uses(Homer's Auto Repair) and had the mechanic do it there. I did use an aftermarket unit as the dealers near us did not have them in stock. So I wanted to try this anyway.
After the thermostat was replaced, upon driving it home, it took almost a mile for the car to warm up. The temp gauge actually worked. As it climbed to the temp, doing about 50 mph at 3000 rpm, it suddenly shifted into OD.
I slowed down, it downshifted back down to 2nd, I sped up and it shifted like butter, in ALL the gears.
I am a happy man. So, thank you EVERYONE that submitted suggestions and help. I really appreciate it.

Now, any suggestion on how to make this little car a Canyon Carver? We live in the county here in Tenn., that has the twisty road called The Snake(not to be confused with The Dragon). Actually the Snake is only a few miles away. When we had our 944 and took it there, we were actually very disappointed. Our AWD Toyota Previa van actually does better than the 944 did. But I'm really looking forward to taking the MR2 there.
Is there a bar that can be purchased that goes between the rear shock mounts to stiffen the rear? The car already has slotted and drilled rotors. Any goodies to look at?

Again, thank you everyone for your input. You REALLY made a difference.
Racing Dreamz is offline  
post #25 of 25 (permalink) Old January 19th, 2017, 16:59
Registered User
 
Join Date: Dec 2004
Location: Austin, TX
Age: 56
Posts: 1,678
OldTrader Rating: (2)
Quote:
Originally Posted by Racing Dreamz View Post
Is there a bar that can be purchased that goes between the rear shock mounts to stiffen the rear?
I am not a believer in the rear strut tower brace on the Mk1 MR2s. If you look a the construction, there is a very rigid box built around the engine. The struts towers are part of this box and are therefor quite well reinforced.

Cusco used to make a rear bar.
AustinTXmr2 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the MR2 Owners Club Message Board forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: (0 members)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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

 
For the best viewing experience please update your browser to Google Chrome