Help !!! sputtering, no power, red cats,shaking.!!
#1
Driver School Candidate
Thread Starter
Help !!! sputtering, no power, red cats,shaking.!!
I have a 1995 Lexus sc300 260k miles (straight Piped) ( no Air Filter box) , the car was sitting for like 3 months then i started it ran outta gas. Put some gas in it drove it to get the wheel bearing fixed. well after this i went filled up the tank with 91 oct and lucas fuel injector cleaner. on the way home the car started sputtering i had no power when i would floor it would go nowhere.it shaking bad my cats are red hot
symptoms
-sputtering
-shaking
-crazy fuel comsumption
-low idle (shakes at idle also)
-red hot cats
-no power
- missing then it will run fine for a second then have no power again
-smells like gas bad
-No Cel
So i was driving with the headers disconnected for about half a day then the problem started so i realized it might be a good idea to connect them so since theyre hot i go to a muffler shop he tells me all my cats all plugged up and thats the reason im running like this.
So i take the car to get the cats deleted and i am still having the problem. i need this fixed as it is my dd for work
Please help soon
symptoms
-sputtering
-shaking
-crazy fuel comsumption
-low idle (shakes at idle also)
-red hot cats
-no power
- missing then it will run fine for a second then have no power again
-smells like gas bad
-No Cel
So i was driving with the headers disconnected for about half a day then the problem started so i realized it might be a good idea to connect them so since theyre hot i go to a muffler shop he tells me all my cats all plugged up and thats the reason im running like this.
So i take the car to get the cats deleted and i am still having the problem. i need this fixed as it is my dd for work
Please help soon
#4
Driver School Candidate
Thread Starter
well my battery should be fine its a brand new battery, although at one point the car was soo dead it wouldnt stay on. but could that be it if i didnt hold the gas it would die.
#5
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Join Date: Nov 2011
Location: tx
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95sc3, there could be multiple reasons going on here, but I will just give my experience…sounds like possible computer issues. I have found when these cars sit for awhile and then used, the juice running through the capacitors/resistors fries them and leaks on your ecu board. Sounds like the ECU is having trouble with the injectors which is causing the gas smell. Too much gas in the cylinders, getting washed down to the cats and burning in there which is causing red hot cats. Try searching these issues…ECU problems, red hot cats…there is a lot of information here….hope this helps
#6
Driver School Candidate
Thread Starter
cb95sc i understand exactly ehat your getting at it just sounds like its kinda weird that the ecu is the culprit of all this mess ? i will see if i can borrow someones laying around. Pleas if anyone has anyother knowledge.
Also if i ever revved the car hard it would die after if i didn toucht the gas
Also if i ever revved the car hard it would die after if i didn toucht the gas
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#15
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iTrader: (1)
That "running rich" smell could be from clogged cats. That would recycle fuel through the evap system and overwhelm the filter for the system. I've never seen this happen on a Lexus and I'm not intimately familiar with the evap system on an SC but the glowing cats sure lead me in that direction!