82 Supra No Power/Backfiring

my sons supra · 12-27-2005, 04:05 AM

Have an 82 supra my son got from his grandmother that had been sitting for about 10 years. Replaced plugs, fluids, fuel filter and it was not accellerating well and would die occasionally. Smelt exhaust so thought it might be a leak messing with the O2 senser. A dealer replaced that and the catalytic converter and exhaust system. Ran OK for a while.

Recently it started cutting out when I'd accellerate (at about 30 mph) and it got worse and started backfiring when I push the gas to the floor. Checked the timing tonight and it is fine. My book says to check the EGR valve. Any other suggestions?

New member. Thanks in advance for the help!

hangsupra · 12-27-2005, 05:12 AM

well.... first is it auto or manual.

my sons supra · 12-27-2005, 08:13 AM

Automatic. Fuel injected DOHC.

KingDiamond · 12-27-2005, 12:26 PM

how long has the gas been sitting, my car say for a year or so without running, and it ran like crap, finally i ran it out of gas, and put fresh in and low and behold problem solved.

hangsupra · 12-27-2005, 04:28 PM

ok.... well... can you get the car starting... or you cant even get the car start... if you get the car start... n it run for awhile n do it should off.... well i use to have this problem tho....

i convert from automatic into manual.... n the rpm were too high... and i adjust the afm n the thorttle body.... n in some point or some how.... i cant get it to work.... so cant make the afm n the thorttle body air flow to match... so it give me back fire to... but first.... i get my car start. n it run smooth... till i do a test drive... n at first... it go slow n you can hear like the engine almost died on the road... n once the i keep up with the speed n when the speed goes higher to a certain speed limet then the car run smooth again... n no more backfire... so if you dont mind double check on your afm n the thorttle body first... n also.... when i get this done... i upgrade my fuel injecter n run to rich.... n sometime it give me backfire to when i make a stop at stop light or stop sign.... well... hope this help you little big... n i sorry if my grammer is poor alright. cause this is not my language... this is my second language so its kind of hard for me to. but i try my best telling you alright.

12-27-2005, 04:05 AM	#1
my sons supra Stock Join Date: Dec 2005 Posts: 3	82 Supra No Power/Backfiring Have an 82 supra my son got from his grandmother that had been sitting for about 10 years. Replaced plugs, fluids, fuel filter and it was not accellerating well and would die occasionally. Smelt exhaust so thought it might be a leak messing with the O2 senser. A dealer replaced that and the catalytic converter and exhaust system. Ran OK for a while. Recently it started cutting out when I'd accellerate (at about 30 mph) and it got worse and started backfiring when I push the gas to the floor. Checked the timing tonight and it is fine. My book says to check the EGR valve. Any other suggestions? New member. Thanks in advance for the help!

12-27-2005, 12:26 PM	#4
KingDiamond 12psi boost Join Date: Apr 2005 Location: West Milford, NJ Posts: 357	how long has the gas been sitting how long has the gas been sitting, my car say for a year or so without running, and it ran like crap, finally i ran it out of gas, and put fresh in and low and behold problem solved.

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12-27-2005, 05:12 AM	#2
hangsupra 12psi boost Join Date: Jan 2005 Location: 209 area in cali. Posts: 397	well.... first is it auto or manual.

12-27-2005, 08:13 AM	#3
my sons supra Stock Join Date: Dec 2005 Posts: 3	Automatic. Fuel injected DOHC.

12-27-2005, 04:28 PM	#5
hangsupra 12psi boost Join Date: Jan 2005 Location: 209 area in cali. Posts: 397	ok.... well... can you get the car starting... or you cant even get the car start... if you get the car start... n it run for awhile n do it should off.... well i use to have this problem tho.... i convert from automatic into manual.... n the rpm were too high... and i adjust the afm n the thorttle body.... n in some point or some how.... i cant get it to work.... so cant make the afm n the thorttle body air flow to match... so it give me back fire to... but first.... i get my car start. n it run smooth... till i do a test drive... n at first... it go slow n you can hear like the engine almost died on the road... n once the i keep up with the speed n when the speed goes higher to a certain speed limet then the car run smooth again... n no more backfire... so if you dont mind double check on your afm n the thorttle body first... n also.... when i get this done... i upgrade my fuel injecter n run to rich.... n sometime it give me backfire to when i make a stop at stop light or stop sign.... well... hope this help you little big... n i sorry if my grammer is poor alright. cause this is not my language... this is my second language so its kind of hard for me to. but i try my best telling you alright.