

| Subject: | Engine Pulsing - No More? |
| From: | Mike Finkbiner |
| Date: | Wed, 23 Jun 1999 21:52:48 PDT |
Volks - As some of you might recall, I bought an '87 Westy in Atlanta and in March we drove it back to Moscow, ID. On the way, we had a serious attack of the bucking, missing engine that VW developed the wiring harness to cure. Unfortunately, the mechanic in Colorado Springs first determined that the ECU was bad (dwell wouldn't come down), and it wasn't until Casper, WY that we got the harness installed. Since then, I have felt that from time to time the engine was pulsing at highway speeds, almost like driving in a gusty wind. Many of you offered suggestions. I cleaned and greased the grounds, checked the voltage rise on the AFM (within spec), and used electronic cleaner on the wiper track, which seemed to help but didn't solve the problem. So - based on several suggestions, I decided to replace the fuel filter, temp sensor and O2 sensor. I ordered the parts, as well as oil and air filters, from the Bus Depot. Unfortunately, due to lack of understanding on my part, I got the temp sensor for the temperature gauge, not the temp 2 sensor, but I put the rest of the parts on, and I hope the Bus Depot will get back to me about exchanging the part. That did it. I still get a bit of surging/pulsing in lower gears around town, but that seems normal to me. On the highway, the engine seems to run very steadily. My gas mileage went up as well, from about 18 to about 20 MPG at 65-70. Based on my experience I would have to say that the pulsing problem a lot of people have reported doesn't have just one cause. In my case, once the wiring harness had suppressed the major problem, a dirty AFM and marginal O2 sensor most likely were the cause of the minor pulsing that was left. Success - at least for now. <G> Next - to find out why the A/C stopped working, and why the temperature gauge is now reading just over the white block when before it was reading just below the LED. Thanks to all of the people who contributed suggestions and good thoughts, but - does it ever end? Mike Finkbiner '87 Westy _______________________________________________________________ Get Free Email and Do More On The Web. Visit http://www.msn.com
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