Vtps installed with issues? - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


MSPNP MSPNP specific Megasquirt related discussion.

Reply
 
 
 
LinkBack Thread Tools
Old 05-23-2011, 02:12 AM   #1
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default Vtps installed with issues?

Alright I installed the vtps as per the instructions diyautotune. Remove resistor R6, R7 and wired the two jumpers. Checked and I do have 5v at the sensor but when I go to calibrate tps on megatune the numbers at closed throttle and open throttle are the same.

1. Is there a setting within megatune that needs to be changed for vtps

2. When trying to capture the reading in the cal screen while running, I'll get 57 at closed and 56 at full throttle and these numbers will rise and fall by 10 points or so. When not running the number for open and closed throttle are the same.

If any one can help that would be grrrrreat!
Tony the Tiger is offline   Reply With Quote
Old 05-23-2011, 03:04 AM   #2
Senior Member
 
Join Date: Apr 2008
Location: NHR, TX
Posts: 536
Total Cats: -2
Default

I think your suppose to calibrate while the car is not running. But regardless I had a similar experience. Their are lots of suggested solutions, but the one I used was using three sets of alligator clips and change the wires until I received the proper response. You might want to give that method a shot. So switch the clips, noting where they were previously, and then calibrate. Eventually you should have the right wires, and at that point just solder everything in place.
apariah is offline   Reply With Quote
Old 05-23-2011, 11:09 AM   #3
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default

Great idea! will try when I get home

Also just tried to cal while running to see if there was any change. ( when troubleshooting you must test and eliminate all variables)
Tony the Tiger is offline   Reply With Quote
Old 05-25-2011, 12:09 AM   #4
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default

Sorry haven't been able to test. Got sent to Canada for work will try this weekend.
Tony the Tiger is offline   Reply With Quote
Old 05-25-2011, 01:34 AM   #5
Junior Member
iTrader: (2)
 
Join Date: Sep 2009
Location: singapore
Posts: 228
Total Cats: 2
Default

Is your vtps new? I had the same problem with setting up vtps on my adaptronic and in the end it was just because the used vtps I got was busted
nismo502 is offline   Reply With Quote
Old 05-26-2011, 12:04 AM   #6
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default

Used! Hopefully this isnt the case
Tony the Tiger is offline   Reply With Quote
Old 05-30-2011, 03:28 AM   #7
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default

Alright I unwired the vtps and checked the ohmic reading on the sensor. At closed I got 638 ohms and at wot I got 3.87k ohms and is linear. Now at the megatuner I get no change on the calibrate tps tab.

Also tried alligator clips with the sensor to allow for multiple combinations of hookups. Went thru all combinations but no change within megatuner.

Also checked the voltages at the tps and I have 5 vdc

My next step is to check the solder connections to see if I have a possible cold solder. Anyone know which connection is the signal back from tps?
Tony the Tiger is offline   Reply With Quote
Old 05-30-2011, 04:25 AM   #8
Senior Member
 
Join Date: Apr 2008
Location: NHR, TX
Posts: 536
Total Cats: -2
Default

I was wondering about the solder job as well, since the tps is actually working.
apariah is offline   Reply With Quote
Old 05-30-2011, 10:50 PM   #9
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default

Well I re burned the solders and I still am in the same spot no change at megatuner. Going to have to check ecu wiring next.

I seen something Brain came up with a boomslang harness.? And he talks about changing the setup at the ecu. Any idea if that will help.
Tony the Tiger is offline   Reply With Quote
Old 06-02-2011, 11:31 AM   #10
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default

Alright second time thru the wiring and reburning the solders, even went with a larger gauge wire for the jumpers and still I have voltage at the tps and changes when the throttle position moves but nothing at the cal screen on megatuner. I ran through hand fulls of threads on this but none seem to be fixed or never posted on what was the final fix. Now i stumbled across Brains boomslang setup for the harness and wondered if this may resolve my issue.
Tony the Tiger is offline   Reply With Quote
Old 06-02-2011, 11:33 AM   #11
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default


Last edited by Tony the Tiger; 06-02-2011 at 11:47 AM. Reason: sorry
Tony the Tiger is offline   Reply With Quote
Old 06-11-2011, 11:49 PM   #12
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default

Issue resolved
When removing the r6 resistor I pull the wire strip which was on the board so that it no longer made connection thru the board with the other side so I skipped the board wiring all together and went directly to the main points on the board.

Calibrated and up and running

Last edited by Tony the Tiger; 06-14-2011 at 12:14 AM.
Tony the Tiger is offline   Reply With Quote
Old 06-13-2011, 05:54 PM   #13
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default

pics of the issue for future assistance

Tony the Tiger is offline   Reply With Quote
Old 06-13-2011, 05:54 PM   #14
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Feb 2010
Location: Plainfield il
Posts: 226
Total Cats: 0
Default

yeah I'm a bit on the destructive side at times.
Tony the Tiger is offline   Reply With Quote
Old 06-14-2011, 04:09 AM   #15
Senior Member
 
Join Date: Apr 2008
Location: NHR, TX
Posts: 536
Total Cats: -2
Default

That frightens me!
apariah is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Buzzing from driver side of engine bay? (MS3 install) nick470 MEGAsquirt 7 06-16-2017 02:53 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Walbro 255lph Fuel Pump $50 lsc224 Miata parts for sale/trade 2 10-01-2015 10:17 AM
Odd Steering issue interestedofold Suspension, Brakes, Drivetrain 5 09-29-2015 02:42 PM


Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 11:21 AM.