setting up tps yb(2wd l8)
 

hi, need to know how to set up tps as throttle is hanging on after taking my foot of the throttle.its hanging at around 2700 rpm.there was a thread around a while ago telling how to set tps up with voltage values at pins on ecu(have swapped outer wires).

cheers mark

Have you unplugged the ICV to make sure its not that ?

ISCV will be raising the engine speed (Assuming it's not a sticky throttle) however it's being TOLD to do so, also it won't run correctly either, TPS for L8 should INCREASE with throttle, i.e. from 0 at closed throttle to circa 5V at WOT. There can be a slight tolerance on both of these.

Martin

The L8 uses the lowest stable voltage as the "zero" reference - there's no need to calibrate it like on the L6.

As young Martin pointed out, the ISCV only raises the engine speed, by letting in more air than the static adjustment (base idle) allows. Unplug the TPS and ISCV to see if the idle speed drops. If it does, one of those has an issue - if it doesn't drop, you have an air leak, probably inlet manifold gasket split.

If reconnecting the ISCV alone makes it idle properly (leave TPS disconnected), chances are the TPS is fooked.

Also noticed it's a 2WD with a L8, in which case you need a PF09 TPS, swapping the wires over won't suffice alone.

If not as mentioned above it will never find the lowest value.

Martin

its been disconnect for months

thing is just done an engine rebuild and had it all apart,new cometic gaskets all over so dont see there being a leak but i could be wrong.gonna try disconnecting both iscv and tps and see how it goes

the tps was new a 1 yr ago,but for some reason i swapped the outer wires thinking this had to be done on a 2wd loom.

hi tony,tps is a o9 as thats all you can buy these days.is there a specific way to set up tps?.

Tony,

Would a duff/ misaligned tsp cause dodgy tickover and flat boost delivery ( when boost comes in power goes flat like soft rev cut ot plugs blown out or misfire across four cylinders) only way I can describe it

Swapped, map sensor,igin amp,coil,coil king lead, fuel reg. ...?.....

400 escos on greys

Then you have something introducing air that shoulden't.

The only thing that can raise engine speed is air, via the throttle or ISCV, as you don't have the latter, you either have a sticky throttle, base idle set incorrectly, or an air leak.

Martin

its running l6 Tony, a certain wolverhamption tuner special....lol

if you could pm me the best number to get you at that would be MEDAZZA

cheers

rob v

martin,how is the base idle set?
chip and injectors brand new this week from msd (380 conversion).

When at running temperature, with all electrical equipment switched off, unplug the ISCV (Already done in your case) base idle should be around 850-900 RPM, there is a screw on the T/B, as yours is 2WD you will need to loosen the locknut first, but ensure this is tighted correctly after, people haven't do so in the past and the whole idle screw vibrates loose and they are very hard and expensive to source!

Screw anti clockwise to increase idle speed and clockwise to decrease (IIRC), reconnect the valve.

Martin

na im running 4x4 engine plus l8 ecu.well i now have idle sorted but now when coming on boost getting fuck off back fires which is cutting out the engine.ive got 55lb siemens with msd chip,but at the moment im only running 20 psi as still running in.would this cause the enginr to flood with fuel as chip telling injectors to put more fuel in but with not enough air or could my timing be slighty out causing back fires?

Thats worrying! If running in you don't want to be running any boost, I woulden't at least!

Could be overfuelling issue, caused by an incorrect input to ECU, have you checked the wires in the dizzy for the phase haven't corroded and shorted? I believe if it's faulty it will cause overfuelling issues which are apparent on boost.

You sure it's not a rev limiter etc lol?

Has the CO etc been set?

Martin

dont really want to be boosting the engine as ive not yet finished the running in,lol but just gently creeped in a bit of boost to see if all was ok and got a back fire looked in mirror to see a cloud of black smoke and me shitting myself.been trying to set up afr with my innoative meter but i think its shit so gonna look for a garagr with a decent co meter and get it checked over tomorrow

I would have a set up done, will have piece of mind then, CO is just one of many things!

Martin

i would love to get a pro to set my car up but theres no one near hear at all to do it.gibraltar has a population of 29,000 people and very little people id trust if any and the nearest garage with any brains is 600km away and very expsenive.maybe a trailer job!!

well car no longer wants to start.was running well rich like 9.8 on a cruise!!!!
this was last night after changing a few things james from msd had told me like tps,phase and tdc maf and blue sensor at back of head.car still continues not to start.has spark and injectors are working.changed chip and injectors to greens and still no luck.rang msd back to be told by lady on phone thats james said he could no longer help me.WTF and to book car in.well thats a bit impossible as i live 1600 miles away.
what sort of service is that!!!

anyone here have any ideas as to what could wrong as 1 of the biggest names in cosworth tuning says they cant help me unless i spend even more money with them than the 600notes i just spent!!

mark

have you not got a leak on the inlet anywhere? it caused mine to rev high

If you have fuel, spark, air and your timing is correct than in theory it has to run !!!!
Unless its dumping a shit load of fuel in and flooding.

Have you got a spare ecu you can try ? Can you put standard injectors in with standard chip as i had a msd chip and my car ran like shit, was told it was a wiring fault or sensor, changed loom and sensors and it still ran like shit, bought a chip from another tuner and it ran perfect.

How i feel for you mate...i've got the same problem here in Rome,Italy..and i don't trust any of these fookers here!.
Anyway,i had a problem on my engine very similuer to yours,1 of the 4 Weber injectors that i got off a Fiat coupè T.16v kept getting stuck open constantly injecting fuel,this happened twice..remove plugs and check,fuel will be shot out as you crank over the engine,pretty 'effin dangerous.

I'm not a MSD fanboi or anything, but perhaps the chip was either corrupt or not actually for your spec (ie, setup for 2bar map sensor instead of 3bar)?

still no f ing luck with getting car started.today tried another ecu standard injectors from my cousins car nothing fuel is coming out of the air filter:cry:.so tomorrow im gonna try another loom as theres nothing else to be tried.pm mr msd last night with thoughts of there service and no reply tonight when i got in.

has your fuel pressure regulator failed? as you say you have fuel coming out of air filter, ive known these fail and full an engine up completley with fuel right up to the top of the rocker cover lol! the fuel is sucked through the vacuum pipe on the pressure regulator

the fuel reg is brand new,which should be pre set to 3.bar with vac pipe on but it was only 2.5 bar so i adjusted it to 3 on idle and 3.5 with pipe of.but im thinking theres a problem with loom as fuel pump supply i rewired a few months back should be given a good voltage .think theres a lot of resistance in loom which is giving a false reading so this afternoon im goona try a spare loom my m8 has.last night tried every avenue .i.e bent valve,cam stuck open ,snapped cam.also gonna try fuel delivery later as well see if there not enough fuel and thats why i up the reg to compensate the lack of volts to pump

tony how do i apply vac to the reg?

reg is a weber 2wd model,not ones these cheap things going around as i said new!.will try the suck test later,dont think the wife will suck it for me shes good at sucking my bell end but cars shes lost lol

just spoke to tony on phone and hes given me a few more things to check and to do and i havent even spent a penny with him!!
what a top gentlemen he is:clap::clap:

mark r

Have you done an airpressure test on your inlet? Have seen the same problem as you have, whit air leak in worn map sensor hose

no i havent done a air pressure test on inlet but i have checked and double checked all hoses,even purchased some noew vacuum hose between fuel reg and inlet and between map and inlet.waited yesterday for someone to bring me another loom to try but they never turned up:wall:
we will see today if they arrive with loom

I have also seen this problem, when it comes water into map conector, it was reading 2bar boost, whit only ignition on and engine not running.

Here is some information of testing sensors and signal
http://www.cannell.co.uk/Ford_Worksh...sis%20Info.pdf

hi tony i did some and found loom fucked,have changed to a spare loom and car is running.thanks very much for ur help.
car is booked in friday morning in madrid for setting up

mark

I read it again and edited my post :oops:

got back from madrid monday morning after an 11hr journey home towing the cossie up and down total of 1100 miles in four days.TTD motorsport has set up the car sweet,minus sun roof as it decided it didt wanna be part of the car anymore on one of the test runs.But only on greens as the chip from msd would'lt start the car.so this morning rang them for steve to tell me the chip they sent me was for l8 with pectel board so no wonder the fucking car was all over the place but steve has sent me this morning a new chip for l8 baby board so hopefully within a week or 2 car should be running sweet!!!!