Help me diagnose what is wrong with my 88 7mgte!

[supra4ever68]

to start off i have codes 41 and 52...the rpm goes up to 1800 but then drops down to about 500 or so and then idles out....another problem i have is that there is this mysterious hose next to the tps that i just don't know where it goes....it's about 1/2 an inch wide....PLEASE HELP ME!!

 

[tlo86]

to start off i have codes 41 and 52...the rpm goes up to 1800 but then drops down to about 500 or so and then idles out....another problem i have is that there is this mysterious hose next to the tps that i just don't know where it goes....it's about 1/2 an inch wide....PLEASE HELP ME!!

hose goes to accordian in front of turbo

 

[supra4ever68]

hose goes to accordian in front of turbo

but the hose is only like 5 inches long??

 

[SevenMKIII]

Connects to metal pipe that runs atop the motor and on the other end of the pipe is another short piece of hose that connects to the accordian before the turbo. Follow the path you'll see.

 

[ATL88Supra]

1st off you are missing a section of pipe it bolts on to the 3000 pipe. the codes and the problem you are disscribeing may be do to the pipe that is not connected re connect that pipe and it should run fine pending any other problems that might pop up on the way and they will :-/

 

[MDCmotorsports]

Pictures please... we are guessing the dark here. We don't know if your engine has ever been loved on, or is stock.

 

[supra4ever68]

ok well here is a pic of the hose that i don't know where it is at...please ask me to take pics of anything you guys wanna look at...
http://i110.photobucket.com/albums/n86/rickdapimp/DSCF0006.jpg

 

[Nick M]

That probably doesn't go to far from where your holding it, don't you think?

41 means the ECU is seeing a TPS signal that is out of range, or does not exist at all. Actually, I don't remember. You need to look it up.

52 is the ECU is seeing a knock sensor signal that is out of range, or does not exist at all.

 

[supra4ever68]

That probably doesn't go to far from where your holding it, don't you think?

41 means the ECU is seeing a TPS signal that is out of range, or does not exist at all. Actually, I don't remember. You need to look it up.

52 is the ECU is seeing a knock sensor signal that is out of range, or does not exist at all.

so what do i need to do?? buy a new tps and knock sensor?? about the hose...i don't see where it goes!! serious...please tell me exactly where it goes...and my radiator light has been on also...it got a little overheated today on warm up...a little over 1/4 of the heat...then i turned it off...next thing i need is an overheated car...and i saw that this plug is all oxydated....can it cause the car to overheat??

http://i110.photobucket.com/albums/n86/rickdapimp/supra1.jpg
http://i110.photobucket.com/albums/n86/rickdapimp/supra2.jpg
http://i110.photobucket.com/albums/n86/rickdapimp/supra3.jpg

 

[ViR2]

it cant cause that, but it's thermal plug, get a new one from toyota

 

[supra4ever68]

k i will get a used one from a junkyard...a lot cheaper...what about the other problems?? also when i have the tps connected it goes no higher than 1800 rpm but when i have it off it acts pretty normal except that it doesn't idle good...could that be a bad tps??

 

[Fletch124]

k i will get a used one from a junkyard...a lot cheaper...what about the other problems?? also when i have the tps connected it goes no higher than 1800 rpm but when i have it off it acts pretty normal except that it doesn't idle good...could that be a bad tps??

Yup thats a bad TPS.

 

[supra4ever68]

ok so now the hose...can someone tell me...im gonna have to take it all apart to put in the tps but just in case i forget lol! also can the thermal plug and bad tps cause one or both of the codes?? also i don't know what this is called but i'm pretty sure it could be a problem... it has a loose wire here are da pics!

http://i110.photobucket.com/albums/n86/rickdapimp/supra4.jpg
http://i110.photobucket.com/albums/n86/rickdapimp/supra5.jpg

 

[ATL88Supra]

ok so now the hose...can someone tell me...im gonna have to take it all apart to put in the tps but just in case i forget lol! also can the thermal plug and bad tps cause one or both of the codes?? also i don't know what this is called but i'm pretty sure it could be a problem... it has a loose wire here are da pics!

http://i110.photobucket.com/albums/n86/rickdapimp/supra4.jpg
http://i110.photobucket.com/albums/n86/rickdapimp/supra5.jpg

LOL i think your car needs some love REALLY bad ok 1st off to fix that wire, sadly there is no way to splice it so you may need to find a junker gte i dont know if that same plug is on a N/A but you may need to cut a junker plug off a good harness or just get a whole new harness to start with cause i even could not do much with that wire..... correct me if i am wrong guys........

 

[supra4ever68]

im pretty sure you are right...the wire is getting oxidated all the way inside also so yeah...imma stick in my boxer and walk right out without having to pay a dime lmfao!!

 

[supra4ever68]

oh btw trust me i love my car but i just haven't had the money to fix it

 

[shaeff]

first, the TPS isn't necessarily bad. it could simply be out of adjustment. set it per the specs in the TSRM: http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&P=100

second, the knock sensors probably aren't bad either. infact, they rarely go bad. (some people are animals and rip them in half, though, so i guess they *do* break on occasion)

you need to rewire your knock sensors using sheilded cable. here's a link on how to do it: http://www.supras.com/06/techcenter/display.php?QID=69

then pull the 15A EFI fuse in the engine bay fuse box for 30 seconds (i always do a minute to be sure) and start the car. run it around a bit, and re-check the codes.

-shaeff

 

[ATL88Supra]

first, the TPS isn't necessarily bad. it could simply be out of adjustment. set it per the specs in the TSRM: http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&P=100

second, the knock sensors probably aren't bad either. infact, they rarely go bad. (some people are animals and rip them in half, though, so i guess they *do* break on occasion)

you need to rewire your knock sensors using sheilded cable. here's a link on how to do it: http://www.supras.com/06/techcenter/display.php?QID=69

then pull the 15A EFI fuse in the engine bay fuse box for 30 seconds (i always do a minute to be sure) and start the car. run it around a bit, and re-check the codes.

-shaeff

i dont think the TPS is bad, as seen in the pictures there is a wire that came right off the harness plug, soo all he might have to do is get a new plug and plice it back to the harness

 

[supra4ever68]

k thanks a lot... so all i need is a ohmeter and a thikness gauge to fix the tps? also how much will the ks connections cost from toyota?? and all i need to do is jack it up right? no engine removal bs

 

[supra4ever68]

i dont think the TPS is bad, as seen in the pictures there is a wire that came right off the harness plug, soo all he might have to do is get a new plug and plice it back to the harness

that wasn't the tps...it was a sensor of some sort but not the tps