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-   -   1982 supra troubles (http://www.toyota-supra.info/forums/mkii-supra/495-1982-supra-troubles.html)

tonster 03-09-2005 08:07 PM

i got a 1982 supra almost 2 yrs ago with a rebuilt engine that had been sitting for a while and for the most part ive gotten everything to work again (even the retractable headlights which would have been easier had i known about the lil module behind the instrument panel not in the chiltons book, but was in the toyota wiring book that i got from the prev own AFTER i fixed it, ha). anyway, there are a few problems i havent been able to figure out. one is that it idles high at about 1200 rpms and chiltons says i need a special service tool (09842-14010). do i really need this or can i get around it? also i cant seem to get the timing right, the closest i can get is 13 BDTC because it swings wildly as i turn the distributor and i cant fine tune it, but maybe that is because of the idle? the temp gauge also reads high. the biggest problem i have is that the car stalls sometimes and i think its some sort of fuel delivery problem because the only way for me to start it is to put more gas in the tank and spray starter fluid in the intake. now the tank is never near empty. usually the car acts a little rough at first and then the gas pedal stops responding and i have to pull over. it will idle for a bit and then die and won't restart unless i do the gas and starter fluid. if i try to pump the gas while its idling, the engine starts to fail until i let up and then it idles again. now the fuel pump, sock, and filter are all new and had a fuel injector cleaner service done. i checked for and didnt find any holes in the pick up line. it happens around a half a tank, but it used to happen around a quarter, but ive had the car running and siphoned the gas out to only a gallon or two and the car never stalled, but then i drove it a few miles and it did. i disconnected the fuel line after the pump assembly and silencer and shorted the check connector to see the flow and the gas came out intermitent, but i cant figure out why? what does the silencer do anyway? i changed the adjustment on it and that caused the change in the trouble position from the quarter tank to half tank mark. the cruise control and ac dont work either if anyone has any suggestions how to fix them, but i can live without those. another thing ive noticed is that the car doesnt have much pickup until 2000 rpms or so. any help would be greatly appreciated cause im trying to keep this car running til i finish with college.

hangsupra 03-16-2005 11:20 PM

well....when to go on first gear...if the idle below 2000 rpm then its kind of slow...like it didnt burn the gass enough or it soudns like back-fire right....and then after you go over 2000 rpm then its running smooth right...is that right...well if thats how it is than....it just that you need to adjust your air follow meter from the throttle body and the air flow metter (next to the air filters )...cause....it didnt flow right... try that first and see if it work....before i can tell you something else alright.... :P

tonster 03-23-2005 12:46 AM

the idle is around 1200 when the book says it should be like half that, but it doesnt sound like a back fire or anything. its just that the car doesnt have a lot of acceleration until 2500 rpms or so. i had checked the afm near the air filter a while ago and it was fine according to chiltons. i dont know of one near the intake on the EFI? any suggestions about the gas problem? i can live with the car running a little sluggish, but my cars died on me a few times in the mountains because fo that which is no fun.

monkihead 04-02-2005 05:31 PM

since you've already checked afm, check for vaccum leaks. toyotas of the 80's are notorious for power loss when vaccum lines are incorrect or busted. as for the fuel, did you check the tank for any debris?? as a bad prank my friend (not me!) would shove small balloons into the gas tank so when the fuel would reach around half way mark, the balloons would surround and choke the fuel pump. creating pressure loss, stalling the car. what engine model is it? 5me or 5mge??

tonster 04-03-2005 12:15 AM

it's the 5mge. ill try to check all the vacuum lines, there are so many! there was a lot of debris in the tank when i first got the car and i think i got it all out, but i didnt have it boiled out cause i dont want to invest much more money into it since i dont plan on keeping it for more than another year or two. the fuel pump on this one is outside of the tank and has a new filter sock on the pick up line which looked fine the last time i took out the tank and tried a few things. maybe its a lost cause lol i can avoid it if i just fill up more often.

monkihead 04-03-2005 04:06 PM

at least you cant say that you'll ever run out of gas....

tonster 04-06-2005 01:22 AM

HA! well i actually got a lil over 140 miles on the way back without any troubles, didnt want to push my luck any further even though before i would get over 200. i took out the idle adjustment bolt and there was a lot of build up on it so i cleaned it off and now the adjustment actually does something and i can get it to idle really fast if i want lol but still not lower than 1200 rpms. its a quirky lil car.

monkihead 04-06-2005 02:42 PM

have you tried adjusting the throttle cable to lower the idle?

tonster 04-17-2005 03:50 PM

tried adjust the throttle cable this weekend, didnt do anything. so i tried the two stop adjustments and made a lil difference, but even at the max adjustment it still idles around 1000 rpms.

suprra_girl 04-18-2005 10:23 AM

the the engine sound particularly whooshy... like sucking alot of air in?

i would say you could have an intake manifold leak... try getting some engine start/ether/starter fluid (can't remember what you call it there) and spray that all around your intake manifold and vacuum lines
if your idle picks up in a certain place you spray you have found your leak... fix that then try the process again

you ign timing being advanced will also up your idle... i would suggest putting it back to 10deg and see how your idle is... just try moving your dizzy ever so slowly and see how you go

let us know how you get on ;)

Vanbao 05-10-2005 05:45 PM

Please help.

I am new here and I am in desperate need of some expert help. I own an early 1986 Supra which gave out on me while I was driving it on the freeway 2 weeks agao. What happened was that out of the blue while it was running nicely, it started choking and loosing power. Fortunately, I was able to get it to crawl off the freeway to a safe place to park. From that point on, I have not been able to get it to run. It would idles okay but if I step on the gas peddle, the engine would loose power and dies. My friend suggested that I should check for cracks and vacuum leaks . So I checked the air intake hose (the hose that is connected to the air filter and the air flow meter) and did not see any cracks. I also replaced the existing airflow meter with a different one from a wrecking yard. Unfortunately, that did not seem to make any difference. I checked the wires connecting to the airflow meter and found it to be working. I say it is working because when I unplugged it while the engine was idling, the engine would died. Some people also suggested that the problem could be the throttle sensor. I don't know how to find out if this sensor is working or not. However, when I unplugged the wires connecting it while the enginine is idling, nothing happened. The engine continued to idle. From this fact, I am thinking that the throttling sensor might be bad but I am not sure.

Other suspects could be the gas filter or the gas pump. What is strange is that when I applied the gas very slowly, then the engine would rev up and the rpm increased to a certain point. Tthen the engine would choked and lose power again. When let go of the gas after that, the engine settled back to idling.

During all these, the check engine light came on.

This is an old car I have bought when I started going to college. I don't think it is worth taking it to the dealer for repair. Thus, I am trying to figure out what the problem is and repair it myself if it is not too difficult.

Please help me if you know what is going on with my car.

Thank you so much in advance.

KingDiamond 05-10-2005 09:58 PM

hey vanbao your best bet would be to put that into a new topic, you'll get more attention to your problem that way. Some people don't like tryng to answer and read one persons problem, and then in the middle of the same post a new topic pops up from another user about a different car.

jza80 Supra C-I TT 05-12-2005 12:18 AM

i have never seen a mkii so i wouldn't know and plus that thread is HUGE!! i might as well read the instruction manual.

hangsupra 05-17-2005 09:23 PM

Quote:

Originally posted by suprra_girl@Apr 18 2005, 10:23 AM
the the engine sound particularly whooshy... like sucking alot of air in?

i would say you could have an intake manifold leak... try getting some engine start/ether/starter fluid (can't remember what you call it there) and spray that all around your intake manifold and vacuum lines
if your idle picks up in a certain place you spray you have found your leak... fix that then try the process again

you ign timing being advanced will also up your idle... i would suggest putting it back to 10deg and see how your idle is... just try moving your dizzy ever so slowly and see how you go

let us know how you get on ;)

you only find air leak if the air sucking in only... if the air is leak n blow it out... the carbu. spray wouldnt help at all... it only help you when you find a leaking air that sucking in only tho.

monkihead 05-22-2005 03:40 AM

Quote:

Originally posted by hangsupra@May 17 2005, 03:23 PM
you only find air leak if the air sucking in only... if the air is leak n blow it out... the carbu. spray wouldnt help at all... it only help you when you find a leaking air that sucking in only tho.
1.the dont have a carb. 2nd if it has a vaccum leak, spraying carb cleaner or throttle plate cleaner will cause the idle to rise. doing so, lets you know if you have a leak. if you dont, nothing happens to the idle.

hangsupra 05-29-2005 05:17 AM

Quote:

Originally posted by monkihead@May 22 2005, 03:40 AM
1.the dont have a carb. 2nd if it has a vaccum leak, spraying carb cleaner or throttle plate cleaner will cause the idle to rise. doing so, lets you know if you have a leak. if you dont, nothing happens to the idle.
well thats true. the idle will increase if you find the leak. hope you get to work.


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