car dies below 3k

[89supra884]

well i just did the headgasket on my friends supra, and i went to start it and it died out. so i started it and reved it, and if i keep it above 3k its fine, buth when i let go of the gas it just dies. i pulled the head off without removing thew distributior, so i dont think its that, i am honestly stumpped. anyone???

thankyou

 

[supra_man87]

It still could have spun and been slightly off, and what about vacuum hoses? http://www.cygnusx1.net/Supra/Library/EPC/291210/catalog.aspx?F=1708&P=4

 

[89supra884]

ya i checked all of them and they are all fine, would an unadjusted throttle cable cause this? the kid wants to pick up his car today and im stumpped. and we plyed around with the distributor and still nothing.

 

[PCguylovesSupra]

Maybe the TPS is not set right. Cable off TPS, cable off AFM, so many possibilities. Any Pics or Vid of what it is doing.

 

[89supra884]

i dont have any videos, but i just hve to keep reving it between 3 and 35k, like as soon as i let off it just bogs down. the oly way it will stay running is at higher rpm's. when i was putting eveyrhting back together i bent the metal fuel line that you put the banjo bolt through on the fuel rail, but i unbent it so i dont think that is th problem. it sounds fine running at at higer rmps, like there is nothing worng at all, just wnen i let off. i dont think a kinked fuel line would let ny fuel flow at all, soi i dont think its that. but i am not sure

 

[89supracrazy]

Did you kink the fuel regulator return line. If that is the one you kinked that would explain why it dies under 3k rpms. It would cause to much fuel pressure on the rail.

 

[89supra884]

i dont belive that it is that one, but i checked the codes just for the heck of it and i came up with a code 52, which is the knock sensor, and i looked at it and the wire that goes into the connector complety came off, would that explain why it would not want to keep running

 

[89supracrazy]

I don't know how the ecu would react with the knock sensor unplugged but you need to fix that first. I have a 7m-gte, which is turbo and the regulator on mine is the only one with the banjo bolt on the metal line. When you said about the banjo bolt that told me that was the return line on my car. Make sure it is not the return line you kinked.

 

[89supra884]

yes i checked and the return line is not kinked. but i had to replace the driver side valve cover with one from aturbo and the whole throttle body is not all the way bolted down because the turbo valve cover does not have the indent in it for the throttle body. its nt a huge vacuum leak but obviously te throttle body not being all the way donw is still a vacuum leak, but would that still make it really hard to stat because it does not want to start at all. the starter is fine, but just keeps like bgging when we try to start it?

 

[hvyman]

Fix 52 and check for vac leaks.

 

[Nick M]

What else did you not unhook when you too the head off? Correctly installing a distributor/CPS is not hard. I think you have a big hole in the intake after the airflow meter.