flooding driving me insane

[twan]

okay so my 1988 na floods randomly. it only happens when i turn it off after it is running at normal operating temp. i go into the store and come back out, it starts no problem then it idels really rough. up and down the tach between 1200 and 0 rpm until it stalls.
i have to floor it to remove all gas from the cylinders then it idels fine. to my knowledge it sounds like leaving the choke on the carburettor on a snowblower. my mechanic says it might be a vacuum leak but i dont think so. maybe the fuel injectors are leaking a little while its off? any ideas appreciated

 

[nick88]

tps?

 

[twan]

umm is that throttle position sensor?

 

[kotu100]

yea tps=throttle position sensor

 

[twan]

its possible but that doenst make sense. i tried to make a vid but of course it didnt do it this time. but im hoping its a sensor with a weak signal. it'll be so much easier to change than something mechanical

 

[IJ.]

Any codes?

 

[twan]

nope. the alternator and brake light come on when the rpm reaches a really low rpm then it jumps back up to 1000rpm and back down

 

[IJ.]

take 2, have you checked for codes?

 

[mattsplat72]

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/

I have not had this problem on a EFI car the last time I dealt with flooding was on my old 225 Slant Six.

This link is the single most important thing in my faviorites. Save it to yours.

 

[twan]

41. ops i guess it is the tps. is there a way to repair it or should i just replace it?

 

[IJ.]

Look up the section in the TRSM on setting it and see if that cures the issue.

No need to jump straight to replacing parts

 

[Poodles]

Cause I'm feeling nice...

To check the TPS: http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=FI&P=101

To adjust the TPS: http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=FI&P=103

 

[twan]

ha ha thanks man