A freinds MSII system can start out running well, but intermittently foul up.
Opening the hood, he says he can hear the injectors triggering.
I was thinking it was the load on the MS board, but....
Using a new, seperate MSII and relay boards, the car ran perfectly, then did it again.
Since the main board and the relay board have been changed as well as the coil and distributor, that leaves very few components.
Air temp, water temp and the cable between the 2 boxes.
What6 else can we check?
Mystery Inj firing
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Mystery Inj firing
1981 VW Scirocco w Turbo 2L 16v
Re: Mystery Inj firing
Ok 2 years ago my map sensor died causing the MS to read 100 kPa at all times.
This flooded the engine immediately.
Could a vac leak cause similar problems?
This flooded the engine immediately.
Could a vac leak cause similar problems?
1981 VW Scirocco w Turbo 2L 16v
-
Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Mystery Inj firing
A vacuum leak in the MAP hose itself will cause too much fuel, but not the injectors themselves firing. A vacuum leak anywhere else will only cause a higher idle. Do you have a data log of the problem happening you could post?
Re: Mystery Inj firing
I'm in NY, my friend is in Tx. Long distance trouble shooting 
I asked him to make one. Hope to see it tonight and I'll post it.
I asked him to make one. Hope to see it tonight and I'll post it.
1981 VW Scirocco w Turbo 2L 16v