today i drove from socal all the way to vegas with no problems but on my way back some where around barstow there was a hill so i decided to coast down so i shifted to neutral and let it coast i noticed my rpm needle drop all the way to zero than it died ( i was doing 60+ when it just died) i have no idea whats going on with it i get no check engine light..anyway i got to a gas station and i parked i cranked it, it turned over and then it would just die the way i got it back here is that i didnt let go of the gas while it was on idle can anyone help me out thanks
supra dies while driving back from vegas
- Thread starter jo7mge
- Start date
http://cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&P=94jo7mge;1122940 said:
Here's how you check it.
Did you check for ECU codes? Just because the CEL is off doesn't mean there are not codes stored.
i havent checked for codes i dont know how to do it on this car? can you do it with the paperclip? anyway i got it to idle this morning but its very rough i tryed two different afms besides the one that was on and it did the same thing i took a vid but its gonna take time to upload to youtube
Since there are no codes, I suspect the ISCV. Here's the TSRM link to it:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=FI&P=106
Check for proper operation and clean the carbon off the valve and valve seat (you will have to disassemble the ISCV to do this).
If cleaning the ISCV doesn't fix it, I would take a look at the EGR system:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=EC&P=12
If the EGR is supplying exhaust gas to the intake manifold at ilde, it will run like crap.
Neither of these problems will throw a code.
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=FI&P=106
Check for proper operation and clean the carbon off the valve and valve seat (you will have to disassemble the ISCV to do this).
If cleaning the ISCV doesn't fix it, I would take a look at the EGR system:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=EC&P=12
If the EGR is supplying exhaust gas to the intake manifold at ilde, it will run like crap.
Neither of these problems will throw a code.
okay so i fixed it! well it was the intake tube seems like my exhaust manifold was hot really hot doesn't have heat shield...my bad (plus while in nevada heat) melted a hole into the tube the round bulgy part (i have an N/A) so i silliconed it and taped it around(for now..) and it turned on idles like a kitten so i just need to go buy a new intake tube thingy YAY ME!
Your exhaust cooked a hole in the resonator? wow, never heard of that happening. Get a heat shield on that thing.
jo7mge;1123380 said:
LOL...that was easy
Basically you were getting a boat load of unmetered air into the system. Not the AFM like the guys suggested earlier, but damn close.
i know i was panicking i swapped like three different afms (that work perfect) so i was like WTF MATE! i had just about given up on my soupy technically my pops was the one that decided to take of the resonator so the credit go's to him i would have never thought i got a melted hole under there