******************************************************* Sponsoring members may rate this FIX post or add/view comments directly from this link: http://members.iatn.net/c/c.cgi?i=11291&t=euro ******************************************************* 1987 Volkswagen Vanagon 2.1 L Trans: Standard Mileage: 150,000 mi VIN: WV2YB0257HH073807 Fuel: EFI Ignition: Hall Unit Emissions: Ca Emissions Symptoms: dies Occurs: After 30 miles ___________________________ FIX: ___________________________ My nightmare is over. Thanks to all the help. The problem was a bad O2 sensor. It went to full lean after sustained freeway driving. We hooked up gauges to all the sensors and drove the vehicle until the problem returned and then the cause was obvious. We disconnected the sensor and drove back to the shop just fine. I replaced the sensor and sent the customer on there way. They called me this morning from 200 miles away and said the van ran great. Many people mentioned the updated harness for the air flow meter. From what I gathered, this is to fix a responsiveness of the throttle problem. The VW dealerships in So California had never heard of it and didn't have one in stock. I noticed many techs from Canada and New England recommended it. I wonder if it has anything to do with the climate? Just a thought. I now have a rebuilt computer with 30 miles on it for sale, cheap. My supplier won't take it back a;nd I don't want to stock a $400 computer . ____________________ ORIGINAL MESSAGE: _____________________ This vehicle was towed in on Friday. These people are from out of town and are stranded here. The vehicle lost power and then died. It was towed into my shop. It fired up and ran great. The vacuum line to the fuel pressure regulator was broken. I replaced the line and checked the plugs. The were black velvetty and old so I replaced them. I checked the air flow meter and the fuel pump. The pump has 36 lbs without the regulator and my gauge vibrates between 31 and 34 lbs with the regulator hooked up. It smooths out at high rpms. The vacuum gauge bounces between 8 and 12 at idle but smooths out at high rpms. After 30 miles the vehicles starts to lose power and tries to die. I feathered the throttle and it starts running good for about 2 miles and then does it again. Feathering the throttle makes it run good every time. I can let the vehicle run in my shop for over an hour and it still runs good. It is only after about 30 miles of freeway driving the problem returns. The new plugs are black and velvetty again. I took off the cat and it appears to be fine. When the vehicle dies, I checked the fuel pressure and it was still 32lbs. I changed the fuel pump, it is still dieing. These people are frustrated and want there car done now. darryl Darryl Evey desertauto@aol.com Owner/Technician Desert AutoHaus Victorville, California, USA iATN Technician Sponsor http://members.iatn.net/pages/darryl_evey.html
___________________ TEST AND REPAIR DATA ___________________ MANIFOLD VACUUM READINGS Idle: 11 in. Checked for codes and none were found. TESTING AND RESULTS Fuel Pressure - 31-36 lbs _______________________________________________________ iATN Industry Sponsors: http://www.iatn.net/atn/ iATN WebSite: http://members.iatn.net/index.asp Guidelines: http://www.iatn.net/guide.html To configure or cancel your iATN account see: http://members.iatn.net/config/index.asp |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.