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I have a 1996 Import with an automatic gearbox.
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The gearbox has two settings on ECT-S, MANU and PWR.
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MAN
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PWR
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However, the PWR light is on all the time, its hard to see it as its so dim.
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Is there something wrong here?
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Any advise would be appreciated
![Smile :)](./images/smilies/icon_smile.gif)
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Mullen wrote:Hey, yes the overdrive button is the one on the side of the shifter.
As I'm sure you've noticed when it's disengaged there's an O/D Off light on the dash& when it's engaged the light goes out
& the revs drop while maintaining current speed.
There is no O/D On light.
At the risk of immediately looking on the bad side, it's entirely possible that driving it for the last month in Manu mode has not done it any good at all, although as the previous owner told you the gearbox was a bit iffy it may well be that it wasn't in the best of health to start with and it's just brought that to your attention.
This could just be down to an electrical problem between the various components or something more serious.
I'm not a mechanic but if it was me before I spent any money on components I'd take it for a drive,[shifter in D]
until it was up to temp then disconnect the battery for a couple of minutes to reset the ECU.
.
.
Then take it for a spirited drive for 20 mins 1/2 hour with the power button on.
From a standing start with the pedal flat to the floor it ought to rev to 7/7.5k before changing down at around 45MPH
& then you should really feel it start to pull again as it heads up to 70 odd
& the revs should be around 4.5k as you hold it at that speed.
Then check the O/D button works, you should hear
& feel the revs drop back to 3k while maintaing speed, turn it off again and feel the engine braking and the car should slow somewhat.
If it doesn't work like that, check for error codes when you get home-
- you don't need a special tool, any old bit of wire or a paperclip will do.
edit// for some reason it wouldn't let me post this with a link to the error code how-to, but if you google,'mr2 how to check error codes' there's a link to a tutorial if you don't know how to do it already.
Mullen wrote:With the O/D button off- fully out on the shifter, there is a dash light that says
'O/D Off'.
With the O/D button on- fully depressed on the shifter, the dash light goes out.
There's no'O/D on' dash light.
Yes, it's only really noticeable above 50MPH.
The ECU is not under the drivers seat, that's a different thing altogether,[it escapes me what, something to do with the factory alarm or radio I think
& not all auto cars have them anyway]
The ECU is in the boot on the left hand side of the firewall behind the carpet, same as all MR2's.
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Mullen wrote:I read somewhere recently that some of the dash lights shouldn't be changed for LEDs as the resistance from the oem type bulbs is needed.
You should only change the 5 large bulbs& the indicators.
No, just the main ECU.The one's for Auto are marked A.
Manuals are labelled M/T.
Mullen wrote:Hey, yes the overdrive button is the one on the side of the shifter.
As I'm sure you've noticed when it's disengaged there's an O/D Off light on the dash& when it's engaged the light goes out
& the revs drop while maintaining current speed.
There is no O/D On light.
At the risk of immediately looking on the bad side, it's entirely possible that driving it for the last month in Manu mode has not done it any good at all, although as the previous owner told you the gearbox was a bit iffy it may well be that it wasn't in the best of health to start with and it's just brought that to your attention.
This could just be down to an electrical problem between the various components or something more serious.
I'm not a mechanic but if it was me before I spent any money on components I'd take it for a drive,[shifter in D]
until it was up to temp then disconnect the battery for a couple of minutes to reset the ECU.
.
.
Then take it for a spirited drive for 20 mins 1/2 hour with the power button on.
From a standing start with the pedal flat to the floor it ought to rev to 7/7.5k before changing down at around 45MPH
& then you should really feel it start to pull again as it heads up to 70 odd
& the revs should be around 4.5k as you hold it at that speed.
Then check the O/D button works, you should hear
& feel the revs drop back to 3k while maintaing speed, turn it off again and feel the engine braking and the car should slow somewhat.
If it doesn't work like that, check for error codes when you get home-
- you don't need a special tool, any old bit of wire or a paperclip will do.
edit// for some reason it wouldn't let me post this with a link to the error code how-to, but if you google,'mr2 how to check error codes' there's a link to a tutorial if you don't know how to do it already.
Mullen wrote:Have you checked for error codes yet?
I'm not finding a great deal of help apart from people mentioning O/D is dependent on the thermostat working correctly.
Also there is no 4th gear on the autos.It's a 3 speed box.
That's what O/D is for: eg, on the motorway with O/D off you'll be doing 80 mph
@4k revs in 3rd, with O/D on it'll stay in/drop down to 2nd
@ 2.8k whilst maintaining speed.
Pauln wrote:Here's a link to another error code how to thanks hosted by forum member Shinny, which shows the pins you need to short to read off the code:
How to read error codes
Paul