Cliffs: replaced shims, now car wont accelerate or even rev fast; no boost leak, no clogged IC/intake pipes, all wiring connected, no codes.
Edit: mods include built engine, turbonetics 62-1, hard pipes, upgraded IC, BOV ... nothing else really pertinent.
I just replaced some shims in the supra over about a month (school, getting shims, etc. compounded). I got it back together and now it's acting like I have a huge ass boost leak in the intercooler pipe; it won't accelerate at all when I give it gas. Naturally I idled it right back to my garage to check for an IC pipe that was open or something. I triple checked all the connections (i have hard pipes), so I am certain it is not a boost leak from the IC piping. I triple checked all the hoses and vacuum lines (although if it were a leak, it would have to be pretty big since it bogs worse than when my IC pipe blew apart). I also checked over all the connectors (especially the maf sensor) and everything was fine. I also made sure the BOV was working fine.
The car is not throwing any new codes.
My next idea was that the IC pipe was somehow clogged. I made this assumption because the wastegate was opening like normal when I was flooring it, yet the car wasn't going anywhere fast. The wastegate pulls its signal right off the turbo, so I thought there is an issue between the turbo and the engine.
In order for me to change the shims I had to remove the upper IC pipe. I had blocked off the open pipe with a plastic sack. I also had taken off my K&N to clean it and put it back on during the down time. So naturally I had two more areas to check: clogged IC pipe, or clogged/open intake. I just now got done taking apart my whole upper IC piping from the TB down to the IC, and everything was clear. I also took off my intake and made sure there was a clear path from the filter to the turbo fins. I even stuck a mirror down into the intake manifold and checked each runner.
The only thing that is saying it is not a boost leak is the fact that when I give it gas, it doesn't hesitate or shudder at all; it's completely smooth. Also, when I free rev it, it revs slowly.
My only other guesses are timing and/or fuel delivery. I have not messed with the timing (it was set fine before I replaced the shims). The car idles fine (had it idling and revving for a good 10 minutes) so I don't think I have a fuel supply issue. I am all out of ideas and thus I am posting
.
If anyone can help out, that would be awesome.
Edit: mods include built engine, turbonetics 62-1, hard pipes, upgraded IC, BOV ... nothing else really pertinent.
I just replaced some shims in the supra over about a month (school, getting shims, etc. compounded). I got it back together and now it's acting like I have a huge ass boost leak in the intercooler pipe; it won't accelerate at all when I give it gas. Naturally I idled it right back to my garage to check for an IC pipe that was open or something. I triple checked all the connections (i have hard pipes), so I am certain it is not a boost leak from the IC piping. I triple checked all the hoses and vacuum lines (although if it were a leak, it would have to be pretty big since it bogs worse than when my IC pipe blew apart). I also checked over all the connectors (especially the maf sensor) and everything was fine. I also made sure the BOV was working fine.
The car is not throwing any new codes.
My next idea was that the IC pipe was somehow clogged. I made this assumption because the wastegate was opening like normal when I was flooring it, yet the car wasn't going anywhere fast. The wastegate pulls its signal right off the turbo, so I thought there is an issue between the turbo and the engine.
In order for me to change the shims I had to remove the upper IC pipe. I had blocked off the open pipe with a plastic sack. I also had taken off my K&N to clean it and put it back on during the down time. So naturally I had two more areas to check: clogged IC pipe, or clogged/open intake. I just now got done taking apart my whole upper IC piping from the TB down to the IC, and everything was clear. I also took off my intake and made sure there was a clear path from the filter to the turbo fins. I even stuck a mirror down into the intake manifold and checked each runner.
The only thing that is saying it is not a boost leak is the fact that when I give it gas, it doesn't hesitate or shudder at all; it's completely smooth. Also, when I free rev it, it revs slowly.
My only other guesses are timing and/or fuel delivery. I have not messed with the timing (it was set fine before I replaced the shims). The car idles fine (had it idling and revving for a good 10 minutes) so I don't think I have a fuel supply issue. I am all out of ideas and thus I am posting
.If anyone can help out, that would be awesome.
