Check Engine Light & Warning light on
 

I don't know why my check engine light and warning light (on top of speedometer) are on. I have a 93 na supra. The first time they came on for about 10 secs then turned back off. The next day after, it turned on continously. Today I thought I felt the engine idling wierd at a stop. Can anyone please help me out with this?

Almost sounds like an O2 sensor on it's way out ,but before you run off and buy one you should get the diagnostic codes from the car to be sure.

You should be able to check the code using this procedure:
http://www.mkiv.com/techarticles/eng...bd1_codes.html

Check Engine Light & Warning light on
 

hello mine did the same yesterday and when it started it felt like it was misfiring then when i turned it of and back on it was ok should i go down the same check list as you suggested ?
thanks for the help

Did your check engine light come on when it was misfiring?

light
 

yes the red light in the middle of the rpm stayed on and the engin light stayed on i have taken the car back to the place i got it from and they are going to check the ecu on saturday

looks like you were spot on m8t thanx for all your help

engine warning light :(
 

i too have the same problem, but not only does that light go on but others aswell including oil light, battery light, i think heating? (looks like a cat with heat waves coming out) and i think rear lights..

first of its very weird because i know the car has been serviced reguarly by toyota, i recently bought the car and yeh shes mechanically A1 besides the lights which only come on every now and again..

i was browsing around and came across this.. http://www.mkiv.com/techarticles/eng...bd1_codes.html

"The ECM stores the code(s) until it is cleared by removing the EFI No. 1 fuse with the ignition switch off."

First off i know that oil is fresh as i change it every 3000kms with motul chono v, and replace the oil filter and use e30 engine treatment. and i know the oil is at the right level.

next is if that cat symbol with the heatwaves means coolant/overheating thats impossible because the cars temp gauge does not show any overheating, however though when i do turn the car of i hear gargling sounds.. coming from the coolant pipes. if anyone has something to add on that please do.

with the rear light symbol, i guess thats my rear lights which work well except for the small centre brake light with the leds, i have about 4 which arnt working but im pretty sure that shouldnt show up as a fault?

and battery, car starts up fine everytime, alternator is good.. though i do have a sub connected (previous owners) maybe some faulty wiring.

Ok, this is what im planning to do..

oil change & new oil filter plus e30 engine treatment and oil flush
coolant flush, then coolant chnage and bleed out any bubbles
spark plugs iridium ngk's im thinking BKR6EIX-11
flush brake fluid via bleeding, then new dot 4 fluid
transmission oil change castrol vmx, with nulon g70 treatment additive
and last but not least air filter clean

after all this i plan to disconnect the battery, then reconnect it start her take her for a spin.. and if i still get the warning lights ill refer to "The ECM stores the code(s) until it is cleared by removing the EFI No. 1 fuse with the ignition switch off." and give that a go.. if the lights still come on im screwed guys :(

PLEASE DO add any suggestions or comments!

Gurgling means air in the coolant system. It'll either bleed itself out (if you fill your overflow tank), or you've got a leak somewhere.

The taillights will show a fault if a bulb is burned out, or if the bulb used is the incorrect resistance.

Don't clear the code(s) - these are the keys to fixing the underlying problem(s). Tell us what the code number(s) is/are that you get, and we'll help figure out the problem. Most likely it's not related to the fluids or plugs...

how do i find out the codes? sorry for the noob questions, im new to the 2jz's

Just count the flashes, as it describes in the tech article:
http://www.mkiv.com/techarticles/eng...bd1_codes.html

Quote:

Originally Posted by pwpanas (Post 68486) Just count the flashes, as it describes in the tech article:

"The diagnostic trouble code can be read by the number of blinks of the malfunction indicator lamp when TE1 and E1 terminals on the data link connector 1 or 2 are connected. When 2 or more codes are indicated, the lowest number (code) will appear first. "

i dont have the data link?

If you've got an mk4 supra, you've got a data link connector. It's below your steering wheel, partially under the dash, to the left (on us-spec mk4s).

I know but i dont have the "thing" to plug into it so i can read the codes... nor can i get my hands on one.

You don't need to plug a "thing" into it. Just bridge the two pins indicated with a wire or a paper clip! That's what the article means when it says:
"2. Connect terminal between TE1 and E1 of data link connector 1 or 2."
(if you needed an OBD-reader, the article would probably have mentioned that. ;) )

ok i connected the terminals up and ran a diagnosis.. the result was weird:

i was expecting all those lights would blink etc but it didnt, that problem has pretty much gone away for a while now.

however just yesterday a different light came on it was the engine warning light.

so yeh i ran the diag and the engine warning light blinked in this sequence

( blink - blink blink blink ) and yeh kept repeating that, should i have waited longer?

so what sthe problem?

Looks like you have a code 13. Did you look that up in the tech article?

yeh i did, i didnt know what i could do about it though.. then the next day the light dissapeared never to be seen again.. all this stuff is starting to annoy me.

Engine codes will disappear when they no longer occur (they still stayed stored in the ecu though).

Car owners that don't have the patience to methodically go through the troubleshooting steps usually end up taking their cars to a mechanic to get work done. On the other hand, if you're interested in learning how to do all of it yourself, we'll get you pointed in the right direction...

sorry I know this is an old thread...I only got the O2 sensor error code...cleaned the connector and that was fixed...i replaced the sensor anyway lol...so now the CEL just blinks at me...but the car bogs at lower rpm...no real improvement to the car...do I have to clear the ecu codes?

No, something is still wrong with your car - that's why the CEL is blinking. Based on the symptoms, I'd guess a boost leak in your intercooler piping.