94 sc300 single turbo 1jzgte problems, HELP!!!!!!!!!!!!!
10-22-11, 12:24 PM
#1
94 sc300 single turbo 1jzgte problems, HELP!!!!!!!!!!!!!
hey guys,
Yes ive searched! ok ive got a 94 sc300 with a single turbo 1jzgte, i bought the car the way it is, the guy claimed to run outta cash and needed to buy an engagement ring for his gf, so i got a deal on it. when i bought the car it had a number of problems. it has a 2jzge TPS and would rev to 2k and bog down, so i threw my other 1j tps on it, which came off of a motor that has traction control on the tb "if that makes a difference" so boom, it revs higher, but only to 4k and breaking up. so i tried revving it with the fuel return line pinched and it revs to 4k rpm's alot smoother, so i replaced the fuel pump with an aeromotive 340lph stealth in-tank pump. and it still did the same!!! "hey it was worth a shot". now today i replaced the spark plugs with some NGK 4644 "bkr7e" and gaped them to .028... now it revs alot smoother but still at 4k rpm's it almost sounds like a 2step, and no boost.... btw it does the same with the charge pipes off.
things ive replaces:
Crank position sensor
cam angle sensors
fuel pump
tps
spark plugs
Any input with be greatly appreciated!!!!!!!!
HERES A VIDEO OF WHAT ITS DOING!!!!!!!!!!
http://www.youtube.com/watch?v=iC233oMsuEs
Yes ive searched! ok ive got a 94 sc300 with a single turbo 1jzgte, i bought the car the way it is, the guy claimed to run outta cash and needed to buy an engagement ring for his gf, so i got a deal on it. when i bought the car it had a number of problems. it has a 2jzge TPS and would rev to 2k and bog down, so i threw my other 1j tps on it, which came off of a motor that has traction control on the tb "if that makes a difference" so boom, it revs higher, but only to 4k and breaking up. so i tried revving it with the fuel return line pinched and it revs to 4k rpm's alot smoother, so i replaced the fuel pump with an aeromotive 340lph stealth in-tank pump. and it still did the same!!! "hey it was worth a shot". now today i replaced the spark plugs with some NGK 4644 "bkr7e" and gaped them to .028... now it revs alot smoother but still at 4k rpm's it almost sounds like a 2step, and no boost.... btw it does the same with the charge pipes off.
things ive replaces:
Crank position sensor
cam angle sensors
fuel pump
tps
spark plugs
Any input with be greatly appreciated!!!!!!!!
HERES A VIDEO OF WHAT ITS DOING!!!!!!!!!!
http://www.youtube.com/watch?v=iC233oMsuEs
Last edited by soaring72; 10-22-11 at 05:06 PM.
10-22-11, 02:49 PM
#4
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, I came across an old post by CCC-TT that said to cut one of the wires on a body plug. (black wire number 10 on the white plug next to the orange one) It solved the problem immediately.
__________________
On 95s that is how to fix the 3000rpm prob. What is the build date on your car.
__________________
On 95s that is how to fix the 3000rpm prob. What is the build date on your car.
10-22-11, 04:13 PM
#5
, I came across an old post by CCC-TT that said to cut one of the wires on a body plug. (black wire number 10 on the white plug next to the orange one) It solved the problem immediately.
__________________
On 95s that is how to fix the 3000rpm prob. What is the build date on your car.
__________________
On 95s that is how to fix the 3000rpm prob. What is the build date on your car.
As for the revs problem, a major input sensor is probably missing, not working, or not working properly which is causing the rev limit. Any check engine lights? Is the CEL even wired up to the dash? Try pulling codes to see if that leads anywhere.
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10-23-11, 05:06 AM
#8
Lexus Test Driver
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chase the wire on the crank sensor it maybe broken , or the pin might slide out of the connector or not making a good contact.
clear that code and start the car and try to jump E1 and T1 lol i hav ethe same issue with 2jzgte 6 speed swap and i also had the same issue on my car but mine will not go past 3100 rpm lol
Yours is easy fix just go back to the wiring .
I will be on Here most of the day just replort back it's just the wire on the crank sensor i remember last year there was another FL member that had the same issue. I will try to find his thread and post it on here.
clear that code and start the car and try to jump E1 and T1 lol i hav ethe same issue with 2jzgte 6 speed swap and i also had the same issue on my car but mine will not go past 3100 rpm lol
Yours is easy fix just go back to the wiring .
I will be on Here most of the day just replort back it's just the wire on the crank sensor i remember last year there was another FL member that had the same issue. I will try to find his thread and post it on here.
10-23-11, 05:09 AM
#9
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I know he has a 2jz but you can do the same by using you 1jz ecu piniout good luck
https://www.clublexus.com/forums/per...lp-please.html
https://www.clublexus.com/forums/per...lp-please.html
10-23-11, 06:50 PM
#11
Could it be that the fuel pump is wired into the ignition????!!?!? I know this because I blew the ignition fuse when I wired the fans up, and the fuel pump stopped working, previous owner did it, the fuel pump stays on constantly when the key is in the on position!
10-23-11, 09:55 PM
#12
UPDATE: i found 2 wires coming from the harness by the fuse box in the engine bay, 1 goes to the button behind the clutch pedal, and the other one just sits there going nowhere, i touched it down to the positive battery terminal and it triggers the starter causing it to turn over!!!! wtf"? someone please help!
10-24-11, 04:47 PM
#13
that sounds VERY much like the problems i was having when i was wiring my car up, although i didn't have hanging wires all over the place like you did. The first plug you described is part of the neutral start switch, has that been bypassed on your car at all? also where did you find that stray wire? it sounds like touching that wire engages the starter, just like mine did when ever i hooked up my battery. A bit more info is needed
10-26-11, 11:19 AM
#14
that sounds VERY much like the problems i was having when i was wiring my car up, although i didn't have hanging wires all over the place like you did. The first plug you described is part of the neutral start switch, has that been bypassed on your car at all? also where did you find that stray wire? it sounds like touching that wire engages the starter, just like mine did when ever i hooked up my battery. A bit more info is needed
BTW: there is only 1 plug hooked up to the trans, its the one going over the top of the trans. there is also a sensor on the driver side of the transmission with 2 black wires hanging from it. dunno what the hell it is!
10-26-11, 12:22 PM
#15
im thinking about wiring the CPS straight to the ecu..... any helpful info will be greatly appreciated!!!!!!!!
BTW: there is only 1 plug hooked up to the trans, its the one going over the top of the trans. there is also a sensor on the driver side of the transmission with 2 black wires hanging from it. dunno what the hell it is!
BTW: there is only 1 plug hooked up to the trans, its the one going over the top of the trans. there is also a sensor on the driver side of the transmission with 2 black wires hanging from it. dunno what the hell it is!
One is gunna be your speed sensor. The other is the reverse light switch.