WUR cost?!?!

morstad · 02-21-2003, 06:06 AM

Talked to my mechanic today and he said its time I replaced my WUR. He quoted me out at $540...seems a little high to me is this price outrageous? Also quoted me out at $525 for a full tune up. Let me know if this is inline with what others have payed. Thanks!!

Jim Sims · 02-21-2003, 06:27 AM

$320.60 for your WUR here at Pelican.

morstad · 02-21-2003, 06:29 AM

What amount of labor would I be expecting for installation and adjustments?

Kemo · 02-21-2003, 06:33 AM

http://www.pelicanparts.com/catalog/shopcart/911M/POR_911M_fuelCI_pg9.htm#item15

looks like you could save a few bucks buying one from Pelican. it only takes 5 min to replace it. Now...if you need to "adjust" it, thats a whole new ball game. Good luck.

wckrause · wckrause's Garage

Whoa!!!

Before you spend anything, do you know why your mechanic wants to replace the WUR??? What symptoms are you having? What tests did he perform? What is out of spec with the WUR?

I and others on this board have been burned by mechanics who don't know a thing about CIS. They like to swap expensive components without any idea of what they're really doing.

morstad · 02-21-2003, 06:41 AM

My symptoms are once the car warms up it likes to die and then doesnt like to start without priming manually from inside the airbox. It also will fire right up however unless you give it a little gas it will quickly die, all the while if you do get it going it sputters a litte and then will fire up. The car is also missing throughout the power band and the idle is real erratic. The mechanic says he thinks this is what is wrong with it and I am paying him right now to do a full diagnostic. I am going to talk to him this afternoon about what he thinks is wrong with it. Do you think I should post what he thinks on this board first before letting him do the work? Thanks for all the help.

morstad · 02-21-2003, 06:44 AM

geeze that was poorly written.

tsuter · 02-21-2003, 06:46 AM

You gotta check the warm control pressure before doing anything. Maybe bad WUR - maybe not. Maybe many things!

john walker's workshop · 06:50 AM

kind of like pin the tail on the donkey, from the sounds of it. a fuel pressure test to check system pressure and control pressure cold and hot is the first thing he needs to do before pronouncing the WUR bad. if it has 3.4-3.8 bar hot, and the car still cuts out, then it's not the problem. cold control pressure should begin at close to 1 bar and increase to the limit within a couple of minutes. my cost on those is $289, list is $389, time to install, less than 1/2 hr = $30. new mechanic time?

morstad · 02-21-2003, 06:52 AM

my mechanic kept it overnight cause he wanted to do the warm system and control pressure test last night and then wanted to do a cold system/control pressure test this morning. By the sounds of it he is a good mechanic, basically doing everything you guys have said to do. I only gave him the car yesterday so I cant get on the guy yet. I will post his findings and what he wants to do on this board before I let him perform any surgery. Thanks you guys are great!!!

Kemo · 02-21-2003, 06:53 AM

Why dont you try cleaning it out or maybe attempting to make it adjustable. I will be "modifying" mine here pretty soon. It might just need a cleaning. I took mine apart, cleaned it out with brake cleaner. It did make a difference.

morstad · 02-21-2003, 06:53 AM

BTW any reputable Porsche mechanics in the greater Denver metro area. (Closer to Boulder the better)

morstad · 02-21-2003, 06:55 AM

Another issue i have with the car is that I have one of those Stainless steel airboxes that were manufactured in the early 80's by some guy in Florida. However he sealed it up with silicone and my mechanic said it is very susebtable to leaks. I guess I will find out more in a little. Anyone else have experience with these stainless airboxes.

gblumenstock · 02-21-2003, 11:01 AM

Kemo,

Did you take any pictures of the WUR open? I have been having cold idle issues recently and supect the WUR (car starts fine, initial high idle for a few minutes, settles to around 950 but then starts to drop to 800 and run rough, once warmed up works fine.) Before replacing, I wanted to diagnose more fully. What improved on yours post cleaning. Was this procedure fairly straight forward (like cleaning the distributor?). Any advice would be appreciated. Does anyone have recomendations on what pressure gauges are best for properly testing the WUR?

Thanks,

GB

johnjr · 02-21-2003, 11:09 AM

I had my WUR replaced a year-and-a-half ago, along with a fuel pump relay. My wrench also had to adjust the fuel mixture. Total cost was $539.28. The WUR price was $299.50. The relay was $24.50. The rest was labor...

johnjr
78 SC Targa

Pillow · 02-21-2003, 11:24 AM

There really is no magic to the WUR. It just lets the engine get a richer mixture when cold. The car should run even if it is hosed up, just rougher when warming up.

If the car will not restart hot/warm then it sounds like the fuel regulator that keeps pressure in the system for hot starts.

Also be a cheap skate. I am almost certain a VW/Audi WUR will fit on a 911. They almost all look alike for CIS systems. Also they are so simple (a warming element) I question if they ever go bad.

Check the fuel pressures and then adjust the mixture control and idle as necessary. The CIS system is easier than carbs if you grasp the basics of it.

Good Luck,

morstad · 02-22-2003, 07:05 AM

Spoke to my mechanic and it looks like the WUR isnt bad after all, however he said that my airflow boot is all beat up and leaking. I have yet to hear about this problem from anyone else. Anyone care to fill me in on the importance of the airflow boot? Thanks

wckrause · wckrause's Garage

The airflow boot is just a rubber piece that connects the throttle body to the airbox. If it's got leaks, then unmetered air gets to the throttle body which screws up your mixture. Should be cheap and easy to replace.

radcon · radcon's Garage

I have to chime in here to offer some hard learned knowledge. My '80 SC has been running like crap for over a year. No amount of tinkering would get it to run smoothly. I finally decided it was time to buy the CIS pressure gage set and start there. First thing I found was that the control pressure was only around .5 bar and would never change no matter how far I tapped the adjustment plug down. This was the WUR that I had replaced some time back. I put in the old WUR, same thing, about .5 bar. I decided to open one up and found that the steel pin that is about one inch long and allows the spring to push on the diaphragm plate that controls pressure was knocked out of its recesses and just laying inside the WUR. Opened up the other one and found the same thing. Carefully positioned the pins during reassembly, installed both WURs and they both work fine. Guess the pin must've been knocked out of its recesses when tapping the adjustment plug down. This may be the cause if you can't get your WUR to adjust to the correct pressure.

morstad · 02-22-2003, 11:40 AM

He said that the part is being shipped from California and said the boot alone is about $82 + labor which seems alot cheaper to me than entire WUR unit. After the boot is installed I guess i will bring the car home and look at the WUR pins to see if they are out of line. Any tips before I attemp this? Thanks