Donate to the MX-3.com Forums
View unanswered posts | View active topics It is currently October 18 2018, 3:28 AM



Reply to topic  [ 9 posts ] 
 tps 
Author Message
Regular Member

Joined: February 05 2004, 3:01 AM
Posts: 233
Location: mississuaga, ontario
Reply with quote
Post tps
what is the procedure to adjust this thing i thin thats whats causing my idle to jump ive search for too long
thanks

_________________
95 Mx-3 GS [R.I.P.]
96 Mx-3 GSR [Sold]
97 Mitsubishi eclipse spyder [For Sale]
97 Saturn SL2 [Sold]
03 Corvette Z06 [Current toy]
98 Saturn SL2 [Daily]
http://www.cardomain.com/ride/2176731


December 10 2005, 9:30 PM
Profile
Senior Member

Joined: June 19 2004, 2:01 AM
Posts: 6450
Location: El Paso Tx U.S
Reply with quote
Post 
check the faq please its wuite simple :) or use search this has been discussed many times :)

_________________
-hec

MX-3 w/ curved neck millenia klde, boosted @ 5 psi. /bov and wastegate are good!/ nitto drag radial/ gutted interior/ millenia red top injectors, vortech fmu/aem wideband/ all bolts ons/ Car put together 100% by me. Mechanic? who needs a mechanic? ew.. real men work on their own cars!


December 10 2005, 9:33 PM
Profile WWW
Regular Member

Joined: February 05 2004, 3:01 AM
Posts: 233
Location: mississuaga, ontario
Reply with quote
Post 
faq the link is not working

_________________
95 Mx-3 GS [R.I.P.]
96 Mx-3 GSR [Sold]
97 Mitsubishi eclipse spyder [For Sale]
97 Saturn SL2 [Sold]
03 Corvette Z06 [Current toy]
98 Saturn SL2 [Daily]
http://www.cardomain.com/ride/2176731


December 10 2005, 10:31 PM
Profile
Senior Member

Joined: June 19 2004, 2:01 AM
Posts: 6450
Location: El Paso Tx U.S
Reply with quote
Post 
searxh... basically u ground ten and ground and turn on the key without starting and adjust tps, adjust just before fan turns on and off, if its way out of place the fan will be on.. use search it has been discussed tons of times.

_________________
-hec

MX-3 w/ curved neck millenia klde, boosted @ 5 psi. /bov and wastegate are good!/ nitto drag radial/ gutted interior/ millenia red top injectors, vortech fmu/aem wideband/ all bolts ons/ Car put together 100% by me. Mechanic? who needs a mechanic? ew.. real men work on their own cars!


December 10 2005, 11:00 PM
Profile WWW
Forum Moderator
User avatar

Joined: September 27 2003, 2:01 AM
Posts: 6052
Location: Frankford, Ontario, Canada
Reply with quote
Post 
All this time with the ZE and never did a TPS adjust? Did someone else do the install like in my case where I needed to source a better TB first then was able to do a complete and thorough TPS adjust.

Removal of the TB first to do a compete clean would be a good idea, especially if it's condition is in question. Along with cleaning all the gunk out of the venturi and all of the deposits from the coolant in the bottom half, I especially paid close attention to the idle adjust screw that I removed completely (noting the exact position before removal so that it was returned to the same position) since there was a considerable amount of crusty build-up there that definately was a negative factor. Note that some of the following tests/checks can be done while the TB is removed and on the work bench. This will be completely obvious once you've done it once.
You'll need a good multimeter and a non-electronic one would be helpfull for finding any dead spots in the swept area of the TPS.
You need a suitable jumper wire to go from the TEN to GRD in the DIAG box also (paper clip works fine).
Once the TB has been removed and cleaned, re-install ensuring that the coolant lines to the bottom half are connected and not bypassed (which so many people tend to do and don't realize the negative effects this can have).

ISC Check
This is the small black cylindrical valve at the bottom of the TB where the cooland passes through and measures the coolant temperature so as to adjust the idle accordingly. The colder the coolant the higher the idle should be. As the engine warms up this unit's signal to the ECU will change which in turn will lower the idle gradually. Cold weather users will know this all too well.
Remove ISC connector and check resistance reading with ohmeter. It should fall between 10.7 and 12.3 ohms @ 20C.
Re-connect ISC connector.

TPS Adjust (mechanicl)
Engine off.
Detach TPS connector.

Wire Colour & Purpose
P= +5V reference
Y= TPS position signal to ECU
BR= TPS idle switch
BK/DB= sensor ground

Connect ohmeter to 2 bottom pins (BR and BK/DB) and you should get continuity. If not, loosen 2 TPS retaining bolts and rotate until continuity has just barely been achieved. Semi tighten 2 TPS bolts.
Insert .006" (0.15mm) feeler gauge between the throttle stop screw and throttle lever. This should not break the continuity. If it does break continuity, slightly adjust TPS rotation again to regain the continuity. Insert the gauge in and out a few times to verify. (Note, it must be mentioned here that the throttle lever must be travelling the fullest extent possible to achieve a complete closure of the butterfly within the venturi. If it's believed that the idle stop screw is preventing the control arm from travelling it's maximum distance to a fully closed throttle then adjust the throttle stop screw via a 2.5mm allen key. If this was necessary, then the previous procedure will have to be started all over again).
After confirming continuity with 0.15mm feeler gauge, insert a .020" (.50mm) feeler gauge. This should just barely break continuity but completely. If not re-adjust TPS rotation again. Re-confirm by re-insrting feeler gauge.
In essence, continuity on initial connection to TPS.
Continuity with .15mm gauge inserted.
No continuity with .50mm gauge inserted.
Tighten down TPS retaining bolts.
Re-connect TPS connector.


TPS Voltage Check
Ensure no accessories - radio, fan, defrost etc are all switched off.
Turn ignition key to ON and ensure TEN and GRD are jumped.
Connect ground of voltmeter to Negative on Battery.
Connect other voltmeter lead to the Y wire (second wire from top) from the TPS connector (A long thumbtack or needle will be needed to pierce the wire shiething. Then connect the voltmeter lead to the thumbtack/needle).
At closed throttle which you are now at, you should get a voltmeter reading of .1V to 1.1V. Rotate the throttle linkage by hand to wide open throttle (WOT) and record voltages again. WOT voltage should be 2.8V to 4.5V.
If voltage readings are not within specified tollerances, than TPS replacement will be in order.
To make a final check if voltages are within spec, rotate throttle linkage slowly from closed to WOT and back several times observing for any inconsistant fluctuations. This is best done with an annalog voltmeter if available, since these fluctuations will be very difficult to pick up on an electronic voltmeter.
Remove thumbtack/needle and voltmeter.
Re-install all intake items.
Leave TEN and GRD in DIAG box in plave.

Idle Setting
Ensure that the timing is spot on.
Start engine.
If engine dies right away, adjust idle air screw to 3 full turns out.
Start engine and allow to engine to warm up.
The ISC if operating properly should have the engine idle fairly high if engine was cold. This would be a good time to confirm that the ISC is doing it's job of stepping down the idle as it gets warmer.
Once engine is at operating temperature, adjust idle air screw to approximately 650rpms. The occasional rev by hand is also good to try to ensure idle returns to 650rpms. Once achieved, shut engine off and remove jumper wire.
Start engine again to ensure idle is at approx 700rpm.
If fine tuning to this idle is needed in the future ensure engine is up to operating temp and that the jumper wire is installed. NEVER ADJUST IDLE WITHOUT TEN/GRD JUMPER WIRE.
Do not rest ECU after TPS adjustment. The ECU needs to learn the new settings. A test drive should assist in that regard.
Hope this made things a little easier.


I would appreciate any inputs wrt this "HOW TO" so that I can make the suitable changes and hopefully have this stickied or placed in the FAQ's since our old link is no longer available. Cheers
*John*

_________________
'92 GS-ZE - sold, '95 GS - sold, '02 Protege LX - Daughter, '00 Audi A4 2.8 QTip, Ducati TT2
Image
90 JDM RHD 300ZX TT - 572.1 RWHP | 590.0 RWTQ | 21 PSI | Pump gas


December 11 2005, 12:08 PM
Profile YIM
Regular Member

Joined: February 05 2004, 3:01 AM
Posts: 233
Location: mississuaga, ontario
Reply with quote
Post 
thanks jschrauwen this should be in the faq

_________________
95 Mx-3 GS [R.I.P.]
96 Mx-3 GSR [Sold]
97 Mitsubishi eclipse spyder [For Sale]
97 Saturn SL2 [Sold]
03 Corvette Z06 [Current toy]
98 Saturn SL2 [Daily]
http://www.cardomain.com/ride/2176731


December 11 2005, 12:42 PM
Profile
Forum Moderator
User avatar

Joined: September 27 2003, 2:01 AM
Posts: 6052
Location: Frankford, Ontario, Canada
Reply with quote
Post 
hoffman_BMX89 wrote:
thanks jschrauwen this should be in the faq
Your welcome. It's unfortunate that link is no longer available. Good thing I had a hard copy ...LOL
Hopefull the mods will FAQ this.
*John*

_________________
'92 GS-ZE - sold, '95 GS - sold, '02 Protege LX - Daughter, '00 Audi A4 2.8 QTip, Ducati TT2
Image
90 JDM RHD 300ZX TT - 572.1 RWHP | 590.0 RWTQ | 21 PSI | Pump gas


December 11 2005, 8:49 PM
Profile YIM
Regular Member
User avatar

Joined: November 11 2004, 3:01 AM
Posts: 875
Location: London / Ontario / Canada
Reply with quote
Post 
J-Beef comes through in the clutch 8)

_________________
Brandon
1992 MX-3 GS-ZE
Image


December 11 2005, 10:01 PM
Profile YIM WWW
Forum Moderator
User avatar

Joined: September 27 2003, 2:01 AM
Posts: 6052
Location: Frankford, Ontario, Canada
Reply with quote
Post 
relisys_3200 wrote:
J-Beef comes through in the clutch 8)
Thanks brandon;
I got tired of having to re-post the same thing over and over again and the lost link was the final caveat.

_________________
'92 GS-ZE - sold, '95 GS - sold, '02 Protege LX - Daughter, '00 Audi A4 2.8 QTip, Ducati TT2
Image
90 JDM RHD 300ZX TT - 572.1 RWHP | 590.0 RWTQ | 21 PSI | Pump gas


December 12 2005, 6:27 PM
Profile YIM
Display posts from previous:  Sort by  
Reply to topic   [ 9 posts ] 

Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group.