Dave Bailey
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| posted on 21/4/12 at 09:05 PM |
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What Should I do?
Car is just about finished but I just can't get it running right...... It drives fine on load but for emissions testing the car doesn't
run well.....
I am sure it is going to fail emmissions but I am desperate to get it to IVA so that I know what else I have to fix...
Should I try to sort out the runing issues or just go to IVA.... I have had the car on a rolling road but it just seems to have a problem running
closed loop on the DTA with the LC1 sensor....
Dave B
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austin man
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| posted on 21/4/12 at 09:32 PM |
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Pointless taking it with a known fail, you need to get that sorted what setup are you running
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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imp paul
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| posted on 21/4/12 at 10:25 PM |
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give alan a call at dta
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Dusty
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| posted on 21/4/12 at 11:58 PM |
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Don't run closed loop! Map for emissions at idle/fast idle with engine hot and closed loop disabled.
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Dave Bailey
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| posted on 22/4/12 at 12:22 PM |
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Thanks....
Setup is:-
ST170 Zetec
DTA S60 with LC1
Jenvey throttly bodies 48's
Dry sump with crank case beather blocked off.
I was concerned that the throttle pot wasn't returning to 0 correctly so I replaced it with a Penny and Giles Hall effect one... Not sure if
this has also upset the mapping because the car was mapped on the old one....
Dave B...
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Dusty
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| posted on 22/4/12 at 12:42 PM |
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Very possible. The output of the new throttlebody may not have the same progression as the old one. Re-calibrating the fully closed and open positions
will be vital and probably means the 0 - 10% outputs will be very comparable and not upset idle fueling or 90 - 100%. The progression 20 to 80%
throttle-pot output may however be quite different.
Have you a cam advance map. I did see that DTA had sorted the details for the ST170 engine and the S60 offered full PWM control of cam timing?
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Dave Bailey
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| posted on 22/4/12 at 03:55 PM |
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No I don't have the cam map.... to be honest I was a bit concerned because the guy who mapped it was recommended by DTA however he had never
done an ST 170 before so it was a bit of trial and error... It was a map from scratch but but things like fuel pressure etc was not set up first.... I
had set it to 3 Bar and maybe this was correct.
My error has been that I have tried to improve it and work out why it doesn't run well... I guess I should have gone back to the tuner... I
asked him to contact DTA and make sure that the Map settings were correct but I ended up going back to Alan direct because I wasn't getting any
results... I may talk to Alan to see if he can have a look at the car but I am concerned that we are going to start to talk big money...
I would like to check and make sure the following first:-
1. Injectors are calibrated and are not leaking.
2. The inlet CAM solenoid is working correctly.
I may well have a problem with the car an not the way it has been mapped but I don't think I have...
Dave B
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