superchiem's Toyota RV 5vz Swap
#141
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I found a solution for my speedo finally. I have a 2 wire ac vss. It needs to be converted to a 4 pulse digital wave for the speed and ecm. Dakota Digital only modified the ac wave. So I was out of luck until now.
http://www.olympiafj60.net/vss-buffer.html
Vss buffer boxes do exactly what I want. They came in Pontiac, Chevy, and GMC during the 80s. We can use the dakota digital to calibrate the ac signal. Then use the buffer box makes a digital signal for our speedo, cruise and ecu!
I hope it comes before Thursday!
Awesome!!!!!
http://www.olympiafj60.net/vss-buffer.html
Vss buffer boxes do exactly what I want. They came in Pontiac, Chevy, and GMC during the 80s. We can use the dakota digital to calibrate the ac signal. Then use the buffer box makes a digital signal for our speedo, cruise and ecu!
I hope it comes before Thursday!
Awesome!!!!!
#142
Depend on the ref, some will over look stuff but some are more "by the book".
Are you going to the one in Fullerton?
Don't be surprise if you do not pass the first time, it took me 3 visit to pass.
Are you going to the one in Fullerton?
Don't be surprise if you do not pass the first time, it took me 3 visit to pass.
#143
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My VSS buffer has not even been shipped yet so doesn't look like I'll be able to put that in before the ref.
#144
I might have extra VSS. give me the part no. you need. I might have it. I didn't use one of the VSS that came with the big honking charcoal canister.
Last edited by anthony1; Aug 28, 2012 at 02:35 PM.
#145
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Hey anthony, where did you solder the resistor? I thought if I turned the potentiometer 20k ohms it would start working, but my tach hasn't worked yet.
#147
There's a picture of the tach mod on here....
https://www.yotatech.com/forums/f160...45/index2.html
Thread # 45.
It's 10K ohm. resistor ...not 20K....
You can't find an analog speedo? Somehow, I have the analog/ cable for speed. I wired the output of the cluster to the ECU and it's happy.
https://www.yotatech.com/forums/f160...45/index2.html
Thread # 45.
It's 10K ohm. resistor ...not 20K....
You can't find an analog speedo? Somehow, I have the analog/ cable for speed. I wired the output of the cluster to the ECU and it's happy.
Last edited by anthony1; Aug 28, 2012 at 03:54 PM.
#148
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There's a picture of the tach mod on here....
https://www.yotatech.com/forums/f160...45/index2.html
Thread # 45.
It's 10K ohm. resistor ...not 20K....
You can't find an analog speedo? Somehow, I have the analog/ cable for speed. I wired the output of the cluster to the ECU and it's happy.
https://www.yotatech.com/forums/f160...45/index2.html
Thread # 45.
It's 10K ohm. resistor ...not 20K....
You can't find an analog speedo? Somehow, I have the analog/ cable for speed. I wired the output of the cluster to the ECU and it's happy.
An anolog speedo would not work because I have an electronic speed sensor. That only has 2 wires. I can not swap for a 3 wire because its totally different.
#149
oh, you got the speedo for auto. You may have to research where that 10K was soldered in the 5spd tach diagram and compare that to the auto diagram. Although I dont' recall seeing separate diagram for auto. It's been a while since I looked at them.
#150
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So I didn't pass the smog referee. 
I didn't notice this, but the exhaust shop put one of the rear 02 sensors inbetween the cats not behind both. So that has to be moved all the way back. I used carb hose that says (not for fuel injections) which mean not for high pressure fuel lines for the filler neck breather, so I have to bring a recite for that.
My ob2 did not say ready for 4 test. It said Inc for:
Catlyst Monitor
EVAP
02 Sensor Monitor
02 Heater Monitor
So I need to fix all these things and try again. Making sure I don't go to Golden West!
All that being said. He didn't care the speedo or tach didn't work. Neither did he care about the carb legal air intake.
Where did you guys all go?

I didn't notice this, but the exhaust shop put one of the rear 02 sensors inbetween the cats not behind both. So that has to be moved all the way back. I used carb hose that says (not for fuel injections) which mean not for high pressure fuel lines for the filler neck breather, so I have to bring a recite for that.
My ob2 did not say ready for 4 test. It said Inc for:
Catlyst Monitor
EVAP
02 Sensor Monitor
02 Heater Monitor
So I need to fix all these things and try again. Making sure I don't go to Golden West!
All that being said. He didn't care the speedo or tach didn't work. Neither did he care about the carb legal air intake.
Where did you guys all go?
Last edited by superchiem; Aug 30, 2012 at 10:38 AM.
#151
So I didn't pass the smog referee. 
I didn't notice this, but the exhaust shop put one of the rear 02 sensors inbetween the cats not behind both. So that has to be moved all the way back. I used carb hose that says (not for fuel injections) which mean not for high pressure fuel lines for the filler neck breather, so I have to bring a recite for that.
My ob2 did not say ready for 4 test. It said Inc for:
Catlyst Monitor
EVAP
02 Sensor Monitor
02 Heater Monitor
So I need to fix all these things and try again. Making sure I don't go to Golden West!
All that being said. He didn't care the speedo or tach didn't work. Neither did he care about the carb legal air intake.
Where did you guys all go?

I didn't notice this, but the exhaust shop put one of the rear 02 sensors inbetween the cats not behind both. So that has to be moved all the way back. I used carb hose that says (not for fuel injections) which mean not for high pressure fuel lines for the filler neck breather, so I have to bring a recite for that.
My ob2 did not say ready for 4 test. It said Inc for:
Catlyst Monitor
EVAP
02 Sensor Monitor
02 Heater Monitor
So I need to fix all these things and try again. Making sure I don't go to Golden West!
All that being said. He didn't care the speedo or tach didn't work. Neither did he care about the carb legal air intake.
Where did you guys all go?
I warned about the Fullerton & HB BAR stations in my swap thread.
Unfortunately, your results are now in the system and you need to make all of the corrections regardless what station you go to.
#152
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Just following some driving procedures I was able to get o2 hearter monitor to READY. Then I got 3 codes. P0500, P0770, and P0750. I believe its all related to the speedo, which makes the trany shift correctly.
#154
#155
I went to the one in El Camino College in Gardena.
Your problems are not that bad, actually. Those things are all fixable. You can get fuel lines all day long at any autoparts stores.
Your problems are not that bad, actually. Those things are all fixable. You can get fuel lines all day long at any autoparts stores.
#156
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I may try El Camino, but fix everything except for the cats.
#158
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Im back! My extension is up on nov 10th. I just got back from the exhaust shop. Moved my 02 sensor to the rear of both cats. I'll post pictures as soon as I upload them.
Next I have to fix my speed. I keep getting P0500, which stops all my emission self tests.
I also just got P0440, P0441, and P0446, which is related to the charcoal canister. I only looked up P0440, but I'm guess the rest go with it.
I have to pass this time! I'm going to print this entire thread to show them what I did. I also am going to the smog referee in Miramar because the smog ref at HB just gave me a bad feeling to begin with.
I'm fired up and ready to finish this sucker. Any help will be appreciated!
Navy
Next I have to fix my speed. I keep getting P0500, which stops all my emission self tests.
I also just got P0440, P0441, and P0446, which is related to the charcoal canister. I only looked up P0440, but I'm guess the rest go with it.
I have to pass this time! I'm going to print this entire thread to show them what I did. I also am going to the smog referee in Miramar because the smog ref at HB just gave me a bad feeling to begin with.
I'm fired up and ready to finish this sucker. Any help will be appreciated!
Navy
#159
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So here is the new exhaust.

I was reading over the notes the Ref wrote and he mention no modifications to the 02 sensor wiring. Funny thing is I never modified the 02 sensor till today.
Here are the results from my previous ref appointment. The hand written notes are from me to figure out what he actually wanted.


I was reading over the notes the Ref wrote and he mention no modifications to the 02 sensor wiring. Funny thing is I never modified the 02 sensor till today.
Here are the results from my previous ref appointment. The hand written notes are from me to figure out what he actually wanted.

Last edited by superchiem; Oct 18, 2012 at 09:34 AM.
#160
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If some of you guy are having trouble with the white vss buffer. I emailed the guy that sold it to me and this is what he said:
Dear superchiem,
Ah, I see your problem now! Your wiring it from scratch and tying to go by the Diag. from Chevy Thunder where they inverted the connectors on the image.If you turn the buffer over and follow the Letter code that is stamped on the connector where the wires terminate you will be fine.
Just to clarify the connections on the main connector for you....
A = Ground
B = Not used
C = 4000 ppm ( Wire color usually Green )
D = 4000 ppm ( Not always present on all connectors ,Wire color varies by vehicle )
E = 2000 ppm ( Not always present on all connectors ,Wire color varies by vehicle )
F = 2000 ppm ( Wire color usually Brown )
G = Not used
H = +12 Volts ( Hot in Run & Ign. on positions )
The VSS input connector on their image should have be below the main connector, NOT on top of it! Unfortunately no one has ever corrected it and now its all over the Net confusing the hell out of people.
Hope this clarifies it for you and good luck with your project.
- spiffycar
Ah, I see your problem now! Your wiring it from scratch and tying to go by the Diag. from Chevy Thunder where they inverted the connectors on the image.If you turn the buffer over and follow the Letter code that is stamped on the connector where the wires terminate you will be fine.
Just to clarify the connections on the main connector for you....
A = Ground
B = Not used
C = 4000 ppm ( Wire color usually Green )
D = 4000 ppm ( Not always present on all connectors ,Wire color varies by vehicle )
E = 2000 ppm ( Not always present on all connectors ,Wire color varies by vehicle )
F = 2000 ppm ( Wire color usually Brown )
G = Not used
H = +12 Volts ( Hot in Run & Ign. on positions )
The VSS input connector on their image should have be below the main connector, NOT on top of it! Unfortunately no one has ever corrected it and now its all over the Net confusing the hell out of people.
Hope this clarifies it for you and good luck with your project.
- spiffycar






