Idling Issue
Forum rules
Forum rules
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Forum rules
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
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cosmo1stgen
- MegaSquirt Newbie
- Posts: 10
- Joined: Fri Mar 10, 2006 6:08 pm
Curious what type and year engine are you running? What type of 60-2 wheel do you have? Is it the stock VW mounted inside the block or is it a custom 60-2 mounted to the crank pully? I ask because I took a look at your msq and your wheel decoder settings are quite a bit differnt than the 2.0 ive done in the past which should be the same as all the newer 2.0. ABA on up seems to have the missing teeth in the same spot in relation to the sensor. That may be a large part of your problem.
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mops
- Experienced Squirter
- Posts: 217
- Joined: Sun Sep 25, 2005 4:13 pm
- Location: Auckland, NZ
- Contact:
timing has important role at idle.
you want the timing at target idle rpm between 8 to 12 degrees normally. see what works for you best. you prefer more idle air, but less idle timing to maitain stable idle speed and make idle 'strong' - i.e. engine will not be dropping below idle revs (well it will always do that a little bit, unless you got advanced idle control in place), anyway...
below idle rpm you want to advance timing a bit (if it falls below idle point then it's gonna get extra timing to recover faster) and another crucual thing is to put even less timing at just abouve idle rpm... that will stop the engine from 'running away'.
aswell make sure your map sensor readings are stable. whatever they are they should not be varying more than +-0.5kpa... if it is then you have to implement idle smoothing...
watch pulsewidth at idle. it should be very stable. if it is not, make it stable by tuning vetable.
i noticed aswell that too much afterstart enrichment might cause the engine to die. if you have fairly flat cam then you shouldnt need much or none at all...
you want the timing at target idle rpm between 8 to 12 degrees normally. see what works for you best. you prefer more idle air, but less idle timing to maitain stable idle speed and make idle 'strong' - i.e. engine will not be dropping below idle revs (well it will always do that a little bit, unless you got advanced idle control in place), anyway...
below idle rpm you want to advance timing a bit (if it falls below idle point then it's gonna get extra timing to recover faster) and another crucual thing is to put even less timing at just abouve idle rpm... that will stop the engine from 'running away'.
aswell make sure your map sensor readings are stable. whatever they are they should not be varying more than +-0.5kpa... if it is then you have to implement idle smoothing...
watch pulsewidth at idle. it should be very stable. if it is not, make it stable by tuning vetable.
i noticed aswell that too much afterstart enrichment might cause the engine to die. if you have fairly flat cam then you shouldnt need much or none at all...
BMW, 1985, E30, 325i, 2-door, 5spd , 127k miles, short shift, MSII, V3/code 2.684/60-2 wheel/MT 2.25, LC-1 wbO2, ignitor module mod driving msd coil/, 3 pin Bosch PWC IAC mod
cosmo1stgen
As far as the trigger wheel setup, I don't have a 2.0L with the stock 60-2 trigger wheel. I am running an custom trigger wheel setup on my 1.8L
Yeah I been thing about changing my wheel position and running these values, but I don't think the trigger setting are my problem.
Trigger A=58
Trigger A return=9 or 10
Trigger B=28
Trigger B return=39 or 40
mops
I am going to set the fixed angle to 6-8° and check the timing again.
Great information very helpful.
Thanks alot guys I will keep you posted.
As far as the trigger wheel setup, I don't have a 2.0L with the stock 60-2 trigger wheel. I am running an custom trigger wheel setup on my 1.8L
Yeah I been thing about changing my wheel position and running these values, but I don't think the trigger setting are my problem.
Trigger A=58
Trigger A return=9 or 10
Trigger B=28
Trigger B return=39 or 40
mops
I am going to set the fixed angle to 6-8° and check the timing again.
Great information very helpful.
Thanks alot guys I will keep you posted.