B16A2 Throttle Position Sensor

[vtek16]

Hey all,

Havent been here for a while but im wondering what problems are associated when the TPS is removed from the I/M and disconnected , atm im not running the IACV either due to a lack of room and it seems that due to clearence issues the TPS has broken the plug off as


any ideas


thanks

ash

[bennjamin]

Are you sure it's the Throttle Position sensor TPS/ mounted on your manifold?? Normally the TPS is mounted onto TB so it can read the throttle position. Are you really refering to the PCV?

^ what he said.
The TPS should be located on the side of the throttle body , opposing the throttle cable connection.

[tinkerbell]

guys, the TB is on the IM, so he might truly be referring to the TPS


Hey all,

Havent been here for a while but im wondering what problems are associated when the TPS is removed from the I/M and disconnected , atm im not running the IACV either due to a lack of room and it seems that due to clearence issues the TPS has broken the plug off as


it may cause rough idle running, possible difficulty starting and poor fuel economy...

[vtek16]

yeah im sure its the TPS, i should have explained that the motor is no longer in a Honda but a Mini which may explain the clearance issues i am having ..

It still idles with the tps and IACV disconnected and i belive it can be run fine with no IACV and i will just need to edit the ecu and raise the idle a little also

looks like im going to have to go scour the wreckers and try to figure out why it broke in the first place


welcome any other ideas

PS i have attached a few pics if anyone wants to have a look

http://www.adam.com.au/dealdeek/DSC05050.jpg
http://www.adam.com.au/dealdeek/DSC05053.jpg
http://www.adam.com.au/dealdeek/DSC05054.jpg

[ECU-MAN]

your project is looking realy nice

your car wont drive to well without the TPS.

you may not be able to achive normal operation with out it as the engine will go into limp.


I can hook you up with another one if you need one.

[vtek16]

Ecu-man , i believe we have spoken in the past via pm about modifying the ecu in regards the disconnection of iacv and other various unrequired features , if you could pm me a price for a tps i will get it organized

[tinkerbell]

the tps tells the stock ECU many things,

mostly about WOT operation as well as backing off rev cut...

and also throttle enrichment on quick throttle inputs...

i have a spare TPS if you need it... in sydney...

[vtek16]

thanks for the offer but im in Adelaide and have allready found one coutesy of ecu-man

thanks for the offer

[tinkerbell]

BTW - sweet project :thumbsup:

[vtek16]

thanks, it should be interesting when its all running

[egSi]

awesome mini :thumbsup:

[tinkerbell]

i was thinking you could rotate the throttle body either 90 or 270 degrees,

and re-tap the bolts into the IM to fit...

that way instead of the TPS/throttle cable beign fore/aft it would be up/down...

if you get what i mean...

alternatively - individual throttle body setup should fix the issue too :D :D :D

[ProECU]

Nice project.

Tinkerbell makes a good point RE: rotating the TB. You will definately need a TPS. It's one of the most single important sensors on the engine.

ITB's would be nice, but i'm almost certain that the length of the venturi's would not allow that. I could always lend you my set of ITB's for fitment purposes if needed.

IACV is NOT an issue. ByPass it and disable it in software. You can also set the target rpm's (there are 3 sets of these) in software. I've seen people use stop screws to maintain a higher idle - creative but ugly.

Rgds
Ev

[Edgeauto]

The only problem with rotating the TB is that the air bypasses won't line up anymore which won't matter for the IACV since your not using it but you will loose your base idle and that could cause problems.

[vtek16]

the TPS isnt going to be a issue atm , it is a close fit but im not sure exactly how it got broken im hoping it was done before

Iacv has been removed completley and will be bypassed, if base idle is set higher is it correct base timing will have to be adjusted ?

[Edgeauto]

All you will need to for timing is set idle to spec,adjust the timing then bump up your idle to suit.

[tinkerbell]

The only problem with rotating the TB is that the air bypasses won't line up anymore which won't matter for the IACV since your not using it but you will loose your base idle and that could cause problems.

you can have an idle adjust screw anywhere...

vtek16 - how much fire wall clearance is there?

the engine moves up to 40-50mm in extreme conditions... in a STOCK configuration...

what mounting points are you using? if less than five, you are going to get more movement that 50mm...

BTW - if you are interested, here is my first DIY project:

http://www.geocities.com/b16aprelude/

[vtek16]

there are 5 mounting points , there is plenty of movement around everything else apart from the tps now that the iacv is gone ,, the tps only has around 20mm of clearence, it had more clearence with a std manifold but im now running a trpe r manifold which is where the problems may lie



nicwe project car btw, good job

[Edgeauto]

you can have an idle adjust screw anywhere...

Opps sorry my mistake, you are correct all the passages for the base idle are in the TB:o

[tinkerbell]

it had more clearence with a std manifold but im now running a trpe r manifold which is where the problems may lie


well, download this link: (right click, save as)

http://home.exetel.com.au/tinkerbell/vids/B20VTECswap17august%20027.avi

it is 16MB file, but shows my car on the dyno and shows it rev up and hit the rev limiter...

this is with OEM rear mount, OEM tranny and OEM LHS mounts, but with ES urethane LHS and RHS stabiliser mounts...

there is big movement that is way more than 20mm...

you can clearly see that when pushed hard, the engine moves far too much to have only 20mm clearance...

alternativly:

http://www.turbomagazine.com/tech/0207tur_dynocell_01.jpg


jg_edelbrock_victor_x_intake/ (http://www.turbomagazine.com/tech/0207tur_jg_edelbrock_victor_x_intake/)

a slightly smaller manifold could be a solution to prevent damage, but to the detriment of power/torque if not matched to the rest of the engines compentry (cams intake exhaust head etc)

also - can you panel beat or cut/weld the firewall at all?

[chingaling]

sorry to bring this back but i want to ask will D series.. or any of TPS are interchangable ? seems like the 3 mounting point are same but just located in different way and side

[ECU-MAN]

all B D F H TPS are the same and interchangeabe

[chingaling]

cheers ECU man that helps alot .. now i can go honbits and get one :P