| Author |
Message |
Erik Jonsson (Gamester)
| | Posted on Saturday, November 24, 2001 - 1:32 pm: | |
On this subject, who has the proper part number for a Euro 82 308 Warm up regulator. I am thinking it is a 0438140 033
I have noticed that the one used on US cars is a 0438140 083
Also, what is the proper part number for the Euro fuel distributor...I am showing 0438100 034 for a US version.
I tried a 0438140 045 warm up regulator and the car barely revved over 3000rpm under load. Then I put in the original-possibly bad- -033 and it would not rev over 5000 rpm, yesterday I tried the-083, readjusted the fuel mixture and she ran like a raped ape. I'd like to know if I ought to get the 083 or the 033 as my car is a Euro.
Thanks |
ctk (Ctk)
| | Posted on Thursday, November 08, 2001 - 2:44 am: | |
WUR
The version used on Porsches and Ferraris have fuel enrichment modulation via the twin vacuum pipe connectors.
When you suspect a WUR to be faulty, first check when the engine is cold, the electrical connector activates a bimetal strip inside that allows fuel enrichment, this lasts for only a few seconds on a dead cold engine. If the electrical portion is working, then the metal diaphragm (fine mesh)should be checked for absolutely no blockage by dirt. The pressure difference between top and bottom chamber is about 1.5psi only! If you dismantle the unit, be careful how the bimetal strip is reassembled,same order otherwise, you will never get correct control pressure.
WUR ADJUSTMENT
Manuals say they cannot be adjusted but by 'knocking'or pulling the recessed plug in the WUR body you can adjust the pressure rating.
A working WUR is vital for cold starts and warm ups. It is almost impossible for the unit to fail, usually it dirt that throws it out of adjustment. If you have poor acceleration, check your entire vacuum line system, it usually means a leak. I learned all this the hard way! |
Burnell P. Curtis (Burnell)
| | Posted on Wednesday, November 07, 2001 - 8:45 pm: | |
Porsche 911s use an emergency brake that is independent of the disk brake. |
Kenneth Brealey (Krbrealey)
| | Posted on Tuesday, September 11, 2001 - 1:48 pm: | |
Bruce,
Yes, Peter was right. Porsche did use a similar P-Brake setup on their cars (944) in the mid-eighties. I had to replace the warm up regulator on my 82 308. I got a re-built unit from Fuel Injection Corporation in California ($134 vs $818 new from dealer) My car still isn't running properly, but I think I have other problems to sort out. I may also try another warm-up regulator, as the replacement may not be functioning properly.
Hope this info helps. |
Ben Lobenstein 90 TR (Benjet)
| | Posted on Sunday, September 09, 2001 - 9:18 am: | |
Peter -
If I knew ANYTHING about p-cars, maybe I could answer that..hehehe...
-Ben |
'75 308 GT4 (Peter)
| | Posted on Sunday, September 09, 2001 - 1:42 am: | |
Didn't Porsche 911's use a drum-parking brake within the rear disc-brake as well? |
Ben Lobenstein 90 TR (Benjet)
| | Posted on Sunday, September 09, 2001 - 12:11 am: | |
Bruce -
Workshop Service Manual
Spare Parts Catalouge
From memory, the E-brake is a set of shoes (on a drum) INSIDE the rear disc much like alot of GM and Ford's. I could be wrong here and your 86 with single lug wheels may be differnt than my 5 bolt 90TR.
-Ben |
Bruce Warwick (Skyking)
| | Posted on Saturday, September 08, 2001 - 9:23 pm: | |
Any further info on my question re emergency brake pads?
Are they independent of the regular rear brake pads. In other words, when I put on the emergency brake, am I activating the main brakes or another, independent set of pads.
Dumb novice question: what does WSM and SPC stand for? |
Herbert Edward Gault (Irfgt)
| | Posted on Thursday, September 06, 2001 - 5:00 pm: | |
Burnell is correct in his description of the warmup regulators operation, however the regulator in a lot of applications has a vacuum enrichment system built in that enrichens the mixture by changing pressure under acceleration. My 82 has such a system and can be identified by a vacuun hose connecting to the throttle body. There are a zillion variations of the Bosch CIS system and different car manufacturers use these to apply to their needs. There is a great book available that explains a lot of the differences. It is called Bosch Fuel Injection & Engine Management by Charles O. Probst. I got mine at Books A Million. |
Steve Magnusson (91tr)
| | Posted on Thursday, September 06, 2001 - 9:46 am: | |
Bruce - it's well explained in the TR WSM, but my take is that it could fail in ways that would affect after warm-up mixture control too -- e.g., something causing the internal plate valve not to close properly (so the mixture is always over-richened) or behave erratically -- although this may be a remote possibility (compared to the many horrible things that can happen inside the fuel distributor itself). Good luck with the diagnosis.
PS Guess I was wrong -- get an SPC too! |
Burnell P. Curtis (Burnell)
| | Posted on Wednesday, September 05, 2001 - 9:26 pm: | |
Warm up regulators are part of the CIS fuel injection system. It was used on Porsche, Mercedes- millions of cars. The system used pressure to control-in part- how much fuel is injected. All of this is done by the control unit EXCEPT when the engine is cold. The warm up regulator does it then. It does its job in the first three minutes of operation. When it fails the engine will run too rich or too lean for the first three minutes. On a porsche, you can make them adjustable with some drilling and a bolt. If you want more info. let me know. |
Bruce Warwick (Skyking)
| | Posted on Wednesday, September 05, 2001 - 8:38 pm: | |
Could someone tell me what a warm-up regulator does in my TR [1986]?
Also, does the emergency brake have it's own set of pads independent of my regular brake pads?
Thanks. |