

| Subject: | Re: Help Please; engine bogging loseing compression and shutting off |
| From: | John Klun |
| Date: | Wed, 5 Sep 2001 13:54:10 -0600 |
Chris- Did you check your fuel pump? Check the injector connections- both fuel and electric? Water in your gas tank? Bad gas? Exhaust sensor? Temp II sensor? I had an almost similar experience with my Vanagon and it was a loose electrical connection to number 3 fuel injector. When my mechanic pushed the electrical connection tight, my problems went away... Chris W wrote: > [ I apologize in advance for the lengthy post ] > > Hello all, > > I could really use some help please. For three years my 87 syncro has > been > running relatively "trouble free" while living in California, however the > minute I return to the Northeast coast I began having problems... To the > point, my syncro is experiencing loss of compression (as if someone > grabbed > the fuel line and squeezed it) followed by the engine shutting off. Once > it > shuts off and I come to a stop it is very very hard to get it started > again. > About two years ago my syncro experienced the "Vanagon Syndrome," to which > I > bought the "wiring patch" for the AFM and the problem was resolved. > However > now I am experiencing the same symptoms as the "Vanagon Syndrome" > (hesitation > at speed) coupled with the Rpm's dropping to zero, the engine turning off > and > not able to turn back on for up to 10 to 15 minutes. > This problem has escalated to point that my Vanagon is now UN-drivable, > leaving me stranded on Martha's Vineyard Island (there are worse places to > be > stranded as I have experienced in the past...) . The mechanics at the > local > VW shop here on the island (Bug & Bus) and I have tried numerous possible > solutions over the past week. > We have: > -installed a new fuel filter, temperature sensor, rotor cuffs, and other > basic tune up stuff... > -installed a new Air Flow Meter > -cut open and checked the wiring going to the fuel injection (tube > containing > the wiring from the AFM to the fuel injection) > -tried driving her with the AFM "Vanagon Syndrome" wiring harness on and > with > it off (hooking the plug directly to the AFM and then through the wiring > harness). In both cases the problem still exists... > -I have swore at it and threatened it... > -I have apologized and promised to be nice... > NOTHING... > > To be more precise; I will be driving along and she will bog a little then > > the Rpm's will drop completely, even after pressing the gas peddle down > the > Rpm's will remain dropped (as if they had fallen asleep) the engine will > remain on for a couple seconds and then it will cut off leaving me rolling > to > a stop. Sometimes I can turn the engine right back on while at speed > (putting the clutch in and then letting it out in a jump start manner), > but > if I come to a stop it will take up to fifteen minutes to turn it on... > When > I try and restart her it sounds like it is out of gas the "Wa Wa Wa Wa > waaaa" > sound and nothing, the Rpm's twitch a bit, but the engine won't start. > When I > finally get it to start it starts for two seconds and then shuts off > again. > Then it takes me another five to ten minutes to start her, and when she > starts I have to "gun it" and take off in order to move for more than a > couple hundred of feet. > The problem started in June with a slight bogging while driving along > (usually right after starting her up), again (like the "Vanagon Syndrome") > it > felt as if someone had squeezed the fuel line and then let go... The > problem > continued to escalate all summer until a week ago when it shut off while I > > was driving at 30mph, and it was difficult to get the engine started. The > next day it happened again, however this time I lost all compression i.e., > > the Rpm's dropped to zero and it was difficult to get the engine started > again. Now it is almost completely UN-drivable, except of course when the > mechanic tries to drive it and then it drives fine for them... > > We here are completely baffled, and I am at my ropes end (my wallet is > burning a bit too)... Any advice/help would be greatly appreciated!!! > Thank > you in advance!!!!! > > -Chris Wright > 1987 Vanagon Syncro GL (my baby) > 128,000 miles > [text/html]
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