Stalling at idle and other problems.

[joehahn]

Here is the next crisis that I am hoping someone will have an idea about....75 2.0L was stalling immediately after starting, essentialy had to start it in gear and fly out of garage to get going/warmed up. After a while I started stalling upon deceleration and stops at lights and stop signs (which slowly have become "slow down" signs instead of stops. Took car to local "expert". I think he fiddled w/hoses and now I can start right up cold (but idle is between 1100 and 1400) but I still stalled upon deceleration or gliding out of gear to a stop light or WHATEVER. This is truly frustrating and I hope someone can give me an idea.

I made appointment at local Porsche/Audi dealer where I am going to get my eyes gouged out but I see no other alternative.

Thanks in advance,

Joe

[Alpine]

Are all of your vacuum hoses properly connected? Are your valves properly adjusted? Are your dwell, timing, idle speed and CO within specs?

If you have a multimeter and want check your D-jet fuel injection system (I'm assuming you still have the d-jet) go to my web site http://persweb.direct.ca/aschwenk/earlyefi.htm and download djettest.pdf. (You will need the Adobe Acrobat Reader to view this file.) It will show you in detail how to test most every component of your fuel injection system. This might save you some money.

Alpine

[John Rogers]

Another site is: http://www.conservatory.com/vw/manuals_nyx/EFI-DL.html

This has scanned pages from the d-jet and l-jet manuals.

[joehahn]

Trying to fix problem I started poking around (like an idiot). Unplugged throttle valve switch harness and then plugged back in. Car wouldn't even start! Then I unplugged harness again, left unplugged, car started right up and ran fine (fine enough to drive into garage where I turned it off.) This morning I plugged T.V.S. harness back in, started car right up! I did not drive it though as I know that its fiendish little brain was trying to lure me into it again only to have me stall all the way to work.

SOMEBODY PLEASE HELP ME! THIS WILL PUT ME IN AN ASYLUM!

Thanks for the responses and emails so far...trying to download D-jet manual.

[JP Noonan]

One quick thought. It sounds like you are running really rich. I have a 75 2.0L also and when I put on a rebuilt (old, got it from a swap) MPS that I had tried to adjust the car did what you describe. So MAYBE the MPS is toast (unfortunately thet are $150+) Look at the 914 club web site for the Kjell D_Jet article, it is a little easier than the Bosch manuals, written by a 914 entusist not neccesarily an engineer.

Next thing is I had a bad inline relay with the CHT sensor. Car would stall when I appied the gas and got worse as the temp went up.

If messing with the TPS helped then MAYBE there is aproblem with the decel/over-rev thingy-ma-bob. I've been told (by Dave Carling) that the 75-76 had some funky thing hooked up to the tps as a rev limiter or a decel vavle. My car is missing all the emissions stuff (except cat, yuch!!!) so I can't say for sure but look in the harness for a double stacked plug about 4 wires wild. See what it goes to, try unpluging it.

Again timing,dwell and spark are the best places to start. Go through it like a system, at the very least you learn how things work and have a better chance if you get stranded by the side of the road. Kinda like doing your homework every night in case there is a pop quiz.

Definatly look at the D-Jet article on the 914 club sote. I think it is under tech reference.

[Dave at Pelican Parts]

That's the 914 Fan Page for Kjell's article, JP. http://www.914fan.net

"Dave Carling"? Hee hee!

The rev limiter (on some 76es at the very least, not sure about other years) was hooked up to the main FI wiring harness. It supposedly cut the fuel when the revs got to a certain point, rather than having the distributor rotor cut the spark and dump unburned fuel into the exhaust.

If the car seems to run fine (if sluggish) without the Throttle Position Switch plugged in, then there is a good chance that the TPS is to blame. Other possible suspects are the Head Temp Sensor, the Manifold Pressure Sensor, and probably others as well.

Check into Kjell's article. Then check your ignition system--that's always the first thing you check. Make sure it's working correctly and everything is adjusted right. Then start hunting in the FI system for problems.

Good luck!

--DD

[JP Noonan]

Duh, forgit-about-it.

So I can't spell (I mean, uh, that Carling thing was a play on words, really) and I'm dyslectic with web sites. Does that mean I'm.... Well yes I guess I was wrong, thanks for the save Dave. I'm moving all my Mom's stuff from one house to another, I guess the stress is getting to me.