cleaning throttle boddies

[lawtoni]

Thanks in advance to anyone who can help

My Tamora has an idle speed which is too slow, almost certainly down to the throttle bodies needing cleaning.

How easy is this to do yourself?

Anyone tried to do it who can offer any advice?

Many thanks in advance

[Quentin1]

Setting the idle speed has to be done accompanied by synchronising the throttles, since the grub screw for setting the idle speed will affect the air intake on cylinder 3 at the same time. If you don´t you might mess up the adaptives.
After setting up the throttles you have to reset the throttle potentiometers and the adaptives.

If you have not done it before...it needs attention and patience.

Well, you could try this:



The numbers in the pictures tell you in what order to set up the throttles.
You need a synchrometer, the flow rate should be around 7 kg/hour, idle speed warm around 950 rpm.

Good luck,
Björn.

[lawtoni]

Thanks Björn,

Yowzer!! sounds vbery involved, you would agree that it is too involved for a non mechanic who has only normal tools and never done this before?


Thought it was a good way to learn and save some money at the same time but sounds like the garage will sort it!!!

[Quentin1]

You can go for it, but if you get it wrong while setting up the throttles, you might take it to a point where the engine will not even start any more. So be careful.

If you have a little skill, you may go for it. You will need the TVR software and a laptop that communicates with your ECU to do it properly, though.

[rev-erend]

It will always start .. but what will happen if you get it wrong is the tickover will be high (2500~3000 rpm).

[shep1001]

lawtoni said:

Thanks Björn,

Yowzer!! sounds vbery involved, you would agree that it is too involved for a non mechanic who has only normal tools and never done this before?


Thought it was a good way to learn and save some money at the same time but sounds like the garage will sort it!!!

Tool wise you only need a spanner to loosen the lock nuts & an allen key to turn the grub screws. BUT to set it up correctly you need a syncrometer to measure the air draw and the diagnostic software to re-set the throttle rest position & the adaptive maps. If you don't have the syncrometer and the diagnostics kit the chances are you could make it worse don't bother.

Cleaning the throttle bodies is easy, more so with 2 people. Remove the air box top open the throttle and clean round the butterflies. Don't what ever you do drop anything down the pots when you are cleaning then though!

Shep

Edited by shep1001 on Friday 15th June 17:13

[lawtoni]

Shep, great cleaning was all i was looking to do i dont have any special tools or software
would that help the low rpm idle issue?
Anything else i need by way of instructions?
Many thanks

[lawtoni]

Shep, great cleaning was all i was looking to do i dont have any special tools or software
would that help the low rpm idle issue?
Anything else i need by way of instructions?
Many thanks

[shep1001]

lawtoni said:

Shep, great cleaning was all i was looking to do i dont have any special tools or software
would that help the low rpm idle issue?
Anything else i need by way of instructions?
Many thanks

Might do, usually it needs a bit of a tune up. Personally if you don't have the kit to adjust the idle speed & balance the throttle bodies I would take it to your servicing garage and get them to do it. If it cost you £50 assuming no nasty surprises it would be money well spent. I use Str8six who are not too far from London

[Druid]

lawtoni said:

Thanks in advance to anyone who can help

My Tamora has an idle speed which is too slow, almost certainly down to the throttle bodies needing cleaning.

Do you know that Paul? Sure it's not due to a service requirement?