currently doing a 88 turbo swap into an 89 non-turbo and once i had the engine and tranny in i found out that the non-turbo didnt have the plug for the turbo sensor (obviously) so i was wondering if anyone would knoe if i need the plug in order for my aftermarket boost guage to work, if i do then can anyone help me with the wirings without changing the whole interior harness. thanks
turbo sensor plug
- Thread starter ThomasV
- Start date
I swapped an 88 7mgte into an 88na. You don't need the turbo pressure sensor hooked up. AFAIK, it's just for the oem gauge, because I've never had any problems not using the sensor. If you hook up an aftermarket gauge, you can choose either an electrical, which comes with it's own sensor, or a mechanical, which only needs to connect to the intake manifold by the supplied tubing.
Exactly. The turbo pressure sensor just works the stock gauge. Sincce I put in a mechanical boost gauge when I swapped a 7M-GTE into my '89NA, I didnt' connect the sensor.
useless sensor for a (nearly) useless guage. ditch it...that's like a 1 oz. weight reduction right there lol.
j3pz;1000514 said:
I'm gonna go ahead and guess 'no', seeing that the ECU uses the AFM to measure airflow into the motor.... :sarcasm:
Actually, I think it sends the signal THROUGH the ECU. I know the ECU doesn't use it, but I'm pretty sure the wire from the engine bay goes into one plug on the ECU and the wire from the gauge goes into the ECU on another plug.
If that were the case, then wouldn't the ECU wiring harness have the plug for the sensor, which it does not.
Now there is, of course the chassis wiring harness that connects to the ECU for things like the instrument panel, but is the turbo pressure sensor on that link?
Now there is, of course the chassis wiring harness that connects to the ECU for things like the instrument panel, but is the turbo pressure sensor on that link?
I think it is... but you're right, it really doesn't matter. Even if it goes through the ECU casing, it certainly doesn't affect anything in there, it's a simple pass through.tlo86;1001103 said:
ok awesome. i know the ecu uses the signal from the oil presure sending unit just didnt know if it used the signal for anything. i was thinking it didnt becasue of the afm. thanks guys
Pretty sure the stock boost sensor only connects to the combination meter (dash instrument) harness through the drive circuit:
http://www.cygnusx1.net/supra/Library/TEWD/MK3/manual.aspx?S=Main&P=136
Looked at the TCCS section and couldn't find any connection for the boost sensor.
Same for the TCCS Service info book I have.
http://www.cygnusx1.net/supra/Library/TEWD/MK3/manual.aspx?S=Main&P=136
Looked at the TCCS section and couldn't find any connection for the boost sensor.
Same for the TCCS Service info book I have.
