|
|
06-12-2010, 04:29 PM
|
#1 |
|
3" Exhaust
Join Date: Nov 2009
Location: NYC
Posts: 231
 |
Turbo Backfiring
i changed my exhaust system to a 3in downpipe, test pipe and a blitz cat back...the car runs fine but when the turbo builds up pressure, that when i get a jerk...the gauge used to read at -4, now it stays right above the 0mark, exactly above the 0 mark...the gauge was reading and i saw it go straight to above the 8mark...its weird because the turbo seems to be building up more pressure, but gets to a certain point where it starts backfiring and the car starts jerking...also the engine light goes on only when the turbo acts up
any ideas? |
|
|
|
06-12-2010, 04:45 PM
|
#2 |
 Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
 |
yup, knock or a bad knock sensor. what diagnostic coss do you have? 52?
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal.  Tip Jar --->  |
|
|
|
|
06-12-2010, 05:15 PM
|
#3 |
|
3" Exhaust
Join Date: Nov 2009
Location: NYC
Posts: 231
|
Idk dude, i dont have the computer to tell me codes and mechanic doesnt have 1 for an 89
i changed a rod knouck sensor before, could it be the other 1, or is there more than 2? |
|
|
|
|
06-12-2010, 09:01 PM
|
#4 |
|
Intake
Join Date: Dec 2009
Location: Pearl City, HI
Posts: 33
|
See following link to check your codes:
http://cygnusx1.net/Supra/TechTips/e...ror_codes.aspx And yes, there is 2 knock sensors for 7MGTE. |
|
|
|
|
06-12-2010, 11:18 PM
|
#5 |
|
Toyota Racing Development Join Date: Apr 2007
Posts: 5,038
|
If there's a code 52 the most common cause is bad wiring.
__________________
If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar ---> |
|
|
|
|
06-13-2010, 12:54 AM
|
#6 |
|
3" Exhaust
Join Date: Nov 2009
Location: NYC
Posts: 231
|
if its not?
|
|
|
|
 |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| HELP PLEASE | Nick0887 | Non-Generation Specific Questions | 4 | 02-28-2009 07:26 AM |
| Dream Offer | Karma_Supra | MKIV Supra | 22 | 10-17-2007 03:04 PM |
| Sequential Turbo Question | suprapoweredsoarer | MKIV Supra | 1 | 06-06-2006 12:13 AM |
Hybrid Mode
