Shunting/power loss

[blitzracing]

Yellow 5v supply, red wiper, green 0 volt side

[Chimp871]

Frustrating day. The rimmerbros tps was faulty, ohm reading went from 1.8 to 35 and had the correct sweep angle but if you slightly pulled the pivot out a smidgen or it was centred perfectly it would read open loop and times 130 ohms. Basically fickle.

Rang RB who told me I ordered the wrong part but advised them the test was on the bench not the car. TBH took sometime to persuade them the part was faulty and had nothing to do vehicle fitting. Its gone back but sense a battle to!get my refund.

Frustrating day........

Edited by Chimp871 on Tuesday 5th July 21:19

[blitzracing]

How can they say thats the wrong part? Its unique to the 14CUX- only the connector varies. Its should be around 5k ohms from memory, so the sweeper at mid point should be around 2.5k and the OEM part has its part number stamped on the plastic body.

[Chimp871]

I think it maybe their standard response to avoid a refund, it'll be back with them today so we'll see. The body didn't have any markings only the box it came in. It looked and felt cheap enough low wire gauge.

I stumped up the TVR tax and got one from Performance and just fitted it. Works great and build quality significantly better with the brass pivot fitting snugly onto butterfly female stem, even has spacers I assume for different throttle bodies.

Has slots under spacers and can be adjusted, using RG was not able to get throttle to 100%, only 93% with idle at 13%. Obvious is to increase idle % but not sure which is more important smooth idle or WOT?

After 6 months off road for top end rebuild, new cam etc. Feels good to have her back.

[blitzracing]

You need to get the closed throttle bit right- the peak voltage at WOT is not that critical, as the fuel enrichment on hard acceleration works on voltage change rate , not the peak voltage.