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914World.com _ 914World Garage _ Name the root cause:

Posted by: porsche735 Apr 10 2003, 04:36 PM

We have had an issue with our car since we bought it 7 years ago. We noticed it a few times right after we bought it (actually on the way home from the purchase) and it has progressively gotten worse. We have replaced many things over those years to no avail. The problem would go away for a while and then come back. It was basically a "bucking" or cutout that we would get mostly in left hand turns and more so at high RPMs and when it was hot. Going straight it would fix itself in a while and if you made a right turn it would cure immediately. If you shifted to a higher gear, it would go away more quickly. Bitch of a problem.
We have now cured the problem. Which root cause do you think it was? I'll give the answer after this weekend.

Chris
1973 914 2.0L BP

Posted by: SirAndy Apr 10 2003, 04:49 PM

i voted for "Pinched hose". the left turn/right turn very much sounds like lack of fuel, cause by a pinched hose. tank wasn't tied down correctly? moved in corners a bit to cut off fuel?

can't wait to hear the answer smash.gif

Posted by: r_towle Apr 10 2003, 05:10 PM

Bad Ground, when any German car acts funny, look for a bad ground First.

Posted by: Bruce Allert Apr 10 2003, 05:26 PM

I had a similar problem and found the dizzy to be a bit wobbley. Replaced points with Pertronics & problem went away. I vote dizzy.

Posted by: airsix Apr 10 2003, 05:35 PM

QUOTE
Ich habe einen Schnauzer in meiner Hose!


I can't stop laughing! laugh.gif

Hey, get that dog away from the phone chord!
Why, I'm gonna throttle that sutp[id09490-49(*&^&*()())_
ERROR
NO TERRIER

Posted by: r_towle Apr 10 2003, 05:36 PM

I had a different problem, but it came down to the 30 year old grease in the distributor needed to be cleaned out and re-greased....It was under the plate with the point on it...but it kept the car running on several different variations of cylinders....

Of course I replaced everything first, then finally spent the five cents on new grease and it ran perfect...

Posted by: Gint Apr 10 2003, 06:30 PM

I voted for the main wiring harness. Pure WAG. Wire grounding out with a tad of flex, etc...

Posted by: Jeffs9146 Apr 14 2003, 11:08 AM

OK, so what was wrong with the ^$&ing car!! confused24.gif

Jeff

Posted by: porsche735 Apr 14 2003, 03:23 PM

Well, we thought we had it licked as we removed teh distributor and found all sorts of wobble. This answered the high rpm issue, the trigger points misfiring and the turn sensitivity. Teh guy rebuilt it and said it was way off and it should solve our problems. Well, they are still there....sorry no root cause yet...thanks for playing.

http://www.914world.com/bbs2/index.php?act=ST&f=2&t=1187&st=0&#entry15293

Chris

Posted by: porsche735 May 5 2003, 12:36 PM

O.K., so the winner is.........

Head Temp Sensor Balast Resistor

We had a balast resistor (270 ohm) that would intermittently open circuit. I guess this caused the injectors to run really rich and flood the car. I guess at higher RPM the injector pulses would have long enough duration to flood it.

Chris

Posted by: jonwatts May 5 2003, 12:45 PM

Glad it finally showed itself and got taken care of. Too bad your dad won't get his wish (seeing the car crushed up into a cube for all his frustration).

How about the trailing arm bushings, any better?

Posted by: porsche735 May 5 2003, 12:48 PM

Yep. Trailing arm bushings are fine. We took 1st (me) and 2nd (dad) at Laguna Seca this weekend. So, things must be OK....

Chris

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