Hi everyone,
First of all I would like to introduce myself, as I am new on the forum. I am not that much of a forum guy normally, buy desperate times .
Since last year I acquired an original Dutch 928 S2 Strosek from 1984. The car was running and driving but in need of some TLC and looked like a good addition to my other 2 classics (Datsun 240z build in progress and running an driving Mercedes Benz W116 6.9 SEL). I always liked the look of the 928 and has been on the "want" list for a long time.

The outside of the 928 is completely ruined, I guess by trying to paint it and covering it up with a wrap afterwards, by one of the previous owners. Not that big of an issue, I don't really care as it will be painted eventually. But I found some pictures of it 10 years ago when it was still looking great.

So far I removed the wrap, removed the intake manifold (oil in the V) replaced the gaskets/ spark plugs/ injector seals and cleaned the injectors.
Put everything back together and than the fun started. NO start.

I have been chasing down the no start. Eventually it seems the fuel pump relay and fuse weren't functioning correctly.
After this it was running correctly, a bit high on the rpm but started fine. Unless it warm/ hot then it wouldn't start.

In my problem solving chase I replaced the temp II sensor with the wrong sensor. So I thought, problem found, and replaced it with the right sensor.

When replaced I got the following issue:
- Starts, runs 2 sec and dies.

What I did as last resort:
1. Made sure every hose clamp was on tight, but still no fix.
2. When I disconnect the Temp II sensor, it starts right up and keeps running. So I have fuel and I have spark.
3. Connect the sensor while running and it dies immediately.
4. I can keep it running with some throttle but it doesn't run smoothly and pops in the intake.

I have been reading a lot of forums, but I can't find any real conclusion to this problem. Any help is appreciated!!

 

Hi, Welcome. The temp II sensor might be compensating for a bad MAF, have you tried unplugging that and starting the car? As part of your job list I would recommend getting the MAF and LH brains re-built if they havnt been touched to eliminate them from the current and future problems. The good thing about these cars is the build quality/consistency, nearly all of them have the same failures around the same age as a result so someone here will have the answer for you.

 

Hi Gazfish,

thanks for the answer. Strangely the car was running sort of fine when I bought it. just a small hesitation.

But as soon as I unplug the temp II sensor the car runs fine.

When I plug it back in, it stops immediately.

 

a '84 with a S4 rear ? is this a later build Strosek "alike" ?

4.7 S engine with LH injection ?

 

Hi Barry,

From the quality of the kit it doesn’t appear to be a Strosek look alike.

It is an S2 engine with LH- jetronic correct.

 

it seems indeed a nice "kit" .. without the "dated" overkills one sometimes see.
Ake will hopefully chim in , he knows a lot about Strosek's models/history.

Sorry i can't help further , i have no experience with LH …. the latest 928 i bought had to be K-Jetronic as i see on LH ones so many expensive parts that can go wrong.... if the parts are still available ….

IF anything of interest , i bought a '82 with a low mileage '84 S2 LH engine on which Landsharks ( Germany) build over the '82 K-Jetronic. Cars runs perfect !

 

Welcome to the tank. What state are you locate in?

 

Looks like a Strosek Ultra. This was not available in 84’ so the car has been converted at a later stage. Not unusual. Wheels are OZ Futura by the looks of it.

Before we can help you further, take a picture of the engine.

 

Nick, from the pic of the "auto taxi" and the fact that he describes it as a Dutch conversion, he's in the state of (minor) confusion, (not in the US) but in the Netherlands, but on the right track here.

autostrosek: Looks like a very worthwhile project. Do you have the correct Temp II in there now? Other than that, I can't help with this engine other than to suggest you spend some time reading the "New Visitor" thread, lots of links there. Rennlist is probably the best place to seek advise. Welcome.

 

That's going to be a very cool car when you're done. Good luck with it. Like Barry, I'm a mechanical injection guy ('79 K-Jet), so likely can't help with the current issue.

 

sure, as the flatbed even has the ad "glaasje op , laat je rijden " …. which means no alcohol & driving .

 

That's why i told my "story".... IIRC , the LH system has approx for 8K euro parts and the injectors are NLA.... even a MAF at +2K ??? crazy.
K-jetronic hardware can be bought cheap i guess , at max a new distributor and metering plate will be around 2.5k.... and a good second hand single distributor /new wires ...500 euro ?
I would go that way instead of throwing endless money on a LH.....

just imho….

 

Welcome.

It looks like it has serious potential.

As was noted, Ake (Strosek Ultra) is the 'resident expert' on the Strosek cars.

I'm going to disagree with Barry. The LH is a good setup. While a couple of the parts are expensive, they usually last if you get a good rebuild. The capability of the sensors and the electronics give better performance and emissions than the mechanical CIS (which is still a good setup - electronic is just better).

While diagnostics across the internet (and oceans) is always sketchy, my first guess would be the MAF. Try unplugging it and see what happens.

Being in Europe, you have a very good resource for this. Go to the JDS website. There is a very comprehensive test procedure for everything. If you need any of the components rebuilt, John Speake does a great job of it. He may well chime in himself on this.

 

you are correct Joe , for the part that LH injection was all about emissions and MPG....which are not that important for a Sunday "fun" car … unless of course you plan to use it daily.

CIS was meanwhile developed and used in so many car brands…. even Ferrari.
LH was the first generation of ECU injection….was it already perfect from day one ?? no matter what , those are now very old school electronics....and sure beyond the skill of most DIY in case of problems ....which is 90% of a "fun" car , no ?

I was told ( not experienced myself ) that CIS even gives a better gas response..... perhaps somebody drove both and can compare ?

But ok, i like to work with things i can handle and understand….and are reliable beyond everything else…..Weber carbs

 

Welcome to the list. Try disconnecting the MAF as suggested. Will the car start with temp 2 disconnected ? It should be hard to start because there will be no cold enrichment.

If you need items testing I'm not far away :-) jdsporsche