Excuse my ignorance with this question but my car (92 Turbo Supra with 121k) has been running great to this point (about 800 miles since purchase). Here is what is happening: As I accelerate and shift into third gear when I see the boost gauge coming up, the car will buck real hard one time, the check engine light will come on but if I get out of it the light goes off and car appears to run fine. It only does this so far when I really try to bring the boost up in third gear. I have checked vacuum hoses, tightened the silicone hoses for the intake, turbo etc but am about to lose my mind with this thing. Any suggestions?? Any advice will be greatly appreciated!!
Help! What causes car to buck in 3rd when boost comes up?
- Thread starter scrappin
- Start date
is it all stock|? because if you are running stock piping, then you need to check for crack... literally remove the piping and squeeze them, etc.. sounds
have you checked for codes? (your check engine light does not need to be on to have stored codes)
have you checked for codes? (your check engine light does not need to be on to have stored codes)
This was happining to me when I had a boost leak. Make yourself a tester and find it. The bucking is fuel cut, that is why the check engine light is coming on. There are a couple how-to's on this forum on making a tester. Hope this helps, Good luck!
No the piping is that silicone stuff by Spectre. It has a HKS intake on it. I called myself making sure that all of the clamps were on the piping correctly and not leaking but everything looks good to me...Obviously I have missed something. I thank you for the reply, I will tackle this thing again tomorrow.
---------- Post added at 09:00 PM ---------- Previous post was at 08:58 PM ----------
No, I don't have a boost controller. The gauge shows 8 lbs of boost
---------- Post added at 09:00 PM ---------- Previous post was at 08:58 PM ----------
kamikazemkiii;1585970 said:
No, I don't have a boost controller. The gauge shows 8 lbs of boost
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&P=23
Add that site to your favorites, it will come in handy a lot of times. That is how to check what codes you are getting. All you need is a paper clip or a piece of wire.
Add that site to your favorites, it will come in handy a lot of times. That is how to check what codes you are getting. All you need is a paper clip or a piece of wire.
89supraa;1586006 said:
yea doing the codes is easy..I even carry a paper clip with me where ever i drive
scrappin;1585985 said:
Like stated above, if you have access to a paper clip and have the ability to count you can pull the codes. These are pre OBD-II cars and do not require fancy computers to do such things, thank god.