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 Re: G-Raider 3.0L Supercharger Project
[Re: FrankR]
#726121
12/10/07 12:16 AM
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Joined: Sep 2006
Posts: 2,712
Roll Me Over
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I spent a bit of time looking about, MS page So Maybe, but inconclusive yet. But One of those GM units sure looks similar. Anyone have a bolt on type to do a trial fitting to see how much machining it will take to mount one to a Mitsu?
Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.
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Re: G-Raider 3.0L Supercharger Project
[Re: OldColt]
#726122
12/10/07 12:51 AM
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Joined: Feb 2004
Posts: 10,238
OP
Web Wheeler
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After your post, I did some reading also and see that folks have problems getting them to work. One of the suggestions was a Bosch auxiliary air valve. It sounds like a simple work-around... one wire and an 8 minute warmup cycle from cold.
Have you had any experience with them and do you think that would work? I can probably find those in a yard.
Frank
'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum
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Re: G-Raider 3.0L Supercharger Project
[Re: FrankR]
#726123
12/10/07 12:54 AM
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Joined: Mar 2007
Posts: 950
Rock Warrior
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Charlie -
I have a similar issue with the TPS. The TPS has 4 pins and the MS wiring diagram shows only 3 wires.... ground, Vref and TPS signal.
The Mitsu manual says pin #1 is ground and pin #4 is sensor power.
When I connect an ohmmeter to pins #1 & #3, I get the smooth increase in resistance, so I assume pin #3 is the variable TPS signal to MS.
Does this look correct?:
pin #1 = ground
pin #2 = Vref
pin #3 = TPS signal
pin #4 = 12v+ switched
Or is one pin unused?
Frank the first-second pin on TPS is the "idle switch" (pin 1 is ground) pin 3 is power, pin 4 is output sounds backwards to me
1989 5 door montero 3.0 auto
stock original Japanese
about 200k miles
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Re: G-Raider 3.0L Supercharger Project
[Re: FrankR]
#726124
12/10/07 01:12 AM
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Joined: Sep 2006
Posts: 2,712
Roll Me Over
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I missed your question on the TPS,
p1= +5V
p2= vref
p3= idle switch
p4= signal ground
For MS pin 3 has no use.
Pin 4 ground is to the ms board, not chassis or engine.
Generally there should not be +12V near any sensor.
Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.
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Re: G-Raider 3.0L Supercharger Project
[Re: generation_one]
#726125
12/10/07 01:13 AM
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Joined: Feb 2004
Posts: 10,238
OP
Web Wheeler
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It might be. There's a lot of confusion to me when I look at the schematic and compare the wiring diagram to the connector plug wire color markings listed just above the TPS in the schematic. The color markings in the manual don't agree and it appears that neither do the pin positions. Frank
'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum
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Re: G-Raider 3.0L Supercharger Project
[Re: OldColt]
#726126
12/10/07 01:31 AM
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Joined: Feb 2004
Posts: 10,238
OP
Web Wheeler
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p1= +5V
p2= vref
p3= idle switch
p4= signal ground
For MS pin 3 has no use.
Pin 4 ground is to the ms board, not chassis or engine.
Generally there should not be +12V near any sensor. I did understand that the ground is floating on the engine and ties back to MS. I am still confused about pins 1&4. The FSM says #1 is ground. I need to check some more with the meter. Isn't Vref the 5v+ connection? I must be confusing some of the terms. Frank
'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum
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Re: G-Raider 3.0L Supercharger Project
[Re: FrankR]
#726127
12/10/07 01:32 AM
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Joined: Mar 2007
Posts: 950
Rock Warrior
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I should probably just shut up...the manual I was looking at(89 montero) contradicts itself, or goes way over my head. I forgot you might be using a stealth TB
1989 5 door montero 3.0 auto
stock original Japanese
about 200k miles
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Re: G-Raider 3.0L Supercharger Project
[Re: generation_one]
#726128
12/10/07 01:44 AM
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Joined: Sep 2006
Posts: 2,712
Roll Me Over
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I should ask what throttle but I am pulling my info from the 92-96 3000gt book 2.
There are two TPS wirings, early where there is a seperate idle switch and the later with integral switch. If I am correct the 6 cylinders all have the later style.
Let me redo this,
p1= +5V ----------- MS pin 27
p2= TPS out ------- MS pin 23
p3= idle switch --- NC
p4= signal ground - MS pin 1 to 19
Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.
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Re: G-Raider 3.0L Supercharger Project
[Re: generation_one]
#726129
12/10/07 01:50 AM
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Joined: Feb 2004
Posts: 10,238
OP
Web Wheeler
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No, I'm using the '89 Montero throttle body. My TPS must be different from Charlie's. Here are the wiring instructions from the MS manual: There are two wires on the external wiring schematic that go from MegaSquirt« into the TPS sensor. These two MegaSquirt« wires are +5 Vref signal and a sense line. There is a third wire going to ground. Assuming that you have a proper potentiometer TPS, then +5 Vref goes to one side of the pot, the other side goes to ground and the sensor line is hooked to the wiper.
To hook up your throttle position sensor (TPS), disconnect the TPS, and use a digital multi-meter. Switch it to measure resistance. The resistance between two of the connections will stay the same when the throttle is moved. Find those two - one will be the +5 Vref and the other a ground. The third is the sense wire to the MegaSquirt« controller. To figure out which wire is the +5 Vref and which is the ground, connect your meter to one of those two connections and the other to the TPS sense connection.
If you read a high resistance which gets lower as you open the throttle, then disconnected wire is the one which goes to ground, the other one which had the continuous resistance goes to the +5 Vref from the MegaSquirt« EFI Controller, and the remaining wire is the TPS sense wire.
Using the MS instructions, these are the connections that are appropriate for my TPS sensor: pin 1 = sensor ground pin 2 = unused pin 3 = TPS signal (sense) pin 4 = +5v Vref Frank
'89 [color:"white"]G-Raider[color:"white"] [color:"black"]Supercharged 3.0L, MegaSquirt 2, lockup A/T, 2.5" exhaust, 172k, Cibie H4s/Oscar SCs, Hella Micro DE fogs, Cobra CB, Superwinch hubs, LSD rear/Aussie Locker front, Bilsteins, Lifeline AGM, Rust-Oleum
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Re: G-Raider 3.0L Supercharger Project
[Re: FrankR]
#726130
12/10/07 01:51 AM
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Joined: Sep 2006
Posts: 2,712
Roll Me Over
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Idle stuff,
I have run a 3 wire Bosch but did not like the way it was wired or reacted, it was a poor setup bandaided to MS.
The latest I have is a billet adapter with a Ford ISC bolted to it. This eliminates the wax element idle control as well. I may be able to get a pic of this.
Looking at the pictures in the MS manual I want to get a GM ISC and see if it will mount into the Mitsu housing.
Cheers, Charlie
If It ain't broke, Modify it!
87 Montero turbo Converted back in Spring1989
95 Montero SR 3.8 DOHC Only one?
93 Pajero 3 door 6G75 Mivec with paddle shifted 5 speed
Then a Gen2 SR with full coil independent suspension.
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