What is this par? And what does it do?

[Drewbox]

Just playing with the ol Squareback and I noticed this connection. Pulled it out and found a pair of contacts that appear to be actuated by a cam in the distributor. The connector that plugs into it seem to go to the computer. (yes, this one is fuel injected).

The whole reason why I took it out; I took a overnight camping trip up in the mountains last week. She did pretty good going up the hill (for a VW) but at one point she started to hiccup and I could only do 30mph in second gear. I think its due to the higher altitude and a possible sticking advance mechanism. its was fairly sticky when I bought it and just did a quick shot of WD40.
I was thinking I could just throw in a regular 009, but it doesnt have this connector.

[nogoodwithusernames]

You might want to get the Bentley manual. Those are the FI trigger points. What tells your FI system when to open the injectors.

Also read through some of the troubleshooting threads. Check for vacuum leaks, make sure timing is correct etc as well.
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71 Squareback, 1.7l T4 w/ crank trigger fuel and spark
(Conversion thread https://www.thesamba.com/vw/forum/viewtopic.php?t=732508&highlight= or https://shoptalkforums.com/viewtopic.php?f=1&t=151375&sid=f0542d44a322d290c29d6609fac7f215 )
74 914, 2.0L w/ D-Jet

-Derek

[Drewbox]

I have the Bentley manuel. Unfortunatly it lacks he depth of detail that Im looking for, or at least used to (being an aircraft mechnic).

[KTPhil]

For background and subtle details, grab a six pack and devote an evening or two to this thread:
https://www.thesamba.com/vw/forum/viewtopic.php?t=368774

As far as troubleshooting your car, the FI is the very last system to suspect. It is very reliable, once you get rid of funky (leaky) hoses and electrical connectors. The rest of the system may outlive you. It's that good.

Start with a careful tune-up, which is required on open-loop FI cars (like ours) to run well in any case. More than likely, you'll find timing has slipped or a wire is loose, something cheap and easy to fix.

How long have you had the car? What work has been done on it, especially lately?

[Drewbox]

Ill have to do that reading assignment tonight.

I got the car back in oct. '20.
The car itself is in immaculate condition. garaged its whole life, grocery gitter and sunday cruiser. bought it from the son of the original owner. The guy told me that he did take it to a VW shop to go through the engine and get it back on the road. new tires and a general wash. I bought it is Seattle and drove it home to Phoenix. solid car, no problems (other than running out of gas due to an inaccurate fuel gage). But after a couple months I started to notice a slight hiccup so I tried to adjust the timing but the distributor is already turned all the way over. A couple guys suspect that maybe the distro shaft is off my one tooth. The car still runs smooth 95% of the time, but every now and then when cruising down the freeway or under high loads itll hiccup.

I have no doubt that thre Fi is solid. Its just the ignightion and timing that I think need a little work.

[nogoodwithusernames]

Good to hear you have the Bentley, I feel like there is another that goes more into depth on the FI system but I don't know what. Possibly one of the 914 manuals? Hopefully another will chime in.

If you can't get timing set right it's fairly easy to confirm the theory of the off-1-tooth drive. The manual should have a photo from straight above it showing the angle of the drive slot when at TDC, and if it's not quite right I think some people have carefully re-aligned it with a telescoping magnet (bolt picker upper). Just use caution to not lose the washers under the dist. drive.

And post up some photos of the car! (see the "how to post photos" link so we can see them properly on here) https://www.thesamba.com/vw/forum/viewtopic.php?t=6
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71 Squareback, 1.7l T4 w/ crank trigger fuel and spark
(Conversion thread https://www.thesamba.com/vw/forum/viewtopic.php?t=732508&highlight= or https://shoptalkforums.com/viewtopic.php?f=1&t=151375&sid=f0542d44a322d290c29d6609fac7f215 )
74 914, 2.0L w/ D-Jet

-Derek

[Drewbox]

A few picture of Daisy

[gt1953]

Looks like my Squareback...

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Volkswagen: We tune what we drive.
Numbers Matching VW's are getting harder to find. Source out the most Stock vehicle and keep that way. You will be glad you did.

72 type 1
72 Squareback
({59 Euro bug, 62, 63, 67, 68, 69, 73 type ones 68 & 69 type two, 68 Ghia all sold})