boost cut
 

I have a 87 i shimed the wastegate and i get some sort cut out at 5 pounds help just read how to check codes there 34 43 now what

The ECU is telling you that it doesn't care for the shimmed wastegate.

Code 34
* The turbocharger pressure is abnormal.

Trouble Area

• Turbocharger
• Air flow meter
• ECU
• Intercooler system

Code 43 is something totally unrelated in all likelyhood.

* No "STA" signal to ECU until engine speed reaches 800RPM with vehicle not moving.


Trouble Area

• Ignition switch circuit.
• Ignition switch
• ECU

Well, unrelated unless your ECU is going Tango-Uniform.

Most likely you've created a boost leak. Check all of the couplers you've moved and those near them for tears and make sure they're securely fastened.

I didnt unhook anything

Okay... doesn't really change what you need to do as far as diagnostics is concerned.

Is there a way to check all the can i spray starter fluid on it and c if it revs up i ran a getto intake im going to get a real one tomarrow could that b the problem

what are your mods?

If it is a boost leak, ether's only going to cause a bump in the idle if the leak is so bad that it's already affecting the idle... A boost leak can be crap to track as it doesn't actually leak until there's a good amount of pressure. Google "DIY boost leak tester" or something along those lines and you'll find instructions on building a simple test kit.

If you suspect your intake piping then check it. A leak AFTER the air flow meter is what will cause your issues, not one before it... although fuel cut at only 5psi is most likely after the turbo.

I dont have any mods on my car

let me find that post. here you go. started by supralover. goes over some basic boost leak testing
http://www.toyota-supra.info/forums/mkiii-supra/16001-weird-boosting.html


and this one will really help you http://www.fd3s.net/boost_problems.html

lol phonetic alphabet my favorite is Wisky Tango.. (aka WT)