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Date:         Tue, 20 Apr 2004 21:10:04 -0700
Reply-To:     Mark Seifert <theburnvictims@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mark Seifert <theburnvictims@HOTMAIL.COM>
Subject:      Re: rebuilt 2.1 runs like crap - can't figure it out
Content-Type: text/plain; format=flowed

So temp 2 is located on the side of the thermostat housing, and where is the
other one located? Haven't been able to find it, and dont remember ever
seeing it when pulling the engine. I know there is a ground strap that goes
from the body to the left head, a few wires grounded to the body under the
coil, and one wire that goes to the a/c bracket bolt. That's all the grounds
that I can find. Are there more? the ECU ground must be under the seat next
to the ECU? As for the idle control, idle goes up to about 2500 when a/c is
on.




>From: AJordans <aljordans@comcast.net>
>To: Mark Seifert <theburnvictims@HOTMAIL.COM>
>Subject: Re: rebuilt 2.1 runs like crap - can't figure it out
>Date: Tue, 20 Apr 2004 09:46:38 -0400
>
>Yes two coolant sensors, Temp 2 is frequent perpetrator of rich running and
>bucking.....
>Suggest looking at O2 sensor, Temp 2 sender, Hall effect sender unit in
>distributor and it's wiring through the side, ECU terminal #19 ground,
>engine grounds, tranny ground to engine, etc
>
>ICU "should" only affect performance at idle, ...what is way up?...and
>should kick up the idle when AC is on to keep from stalling out.  Check
>your
>wiring (and vacuum lines?...I forget and my Bentley is out in one of the
>vans)
>Are you throwing black smoke? Will it run OK when floored?  Is your mileage
>way down? Can you smell gas in the oil?
>What's the status of your distributor...are the plug wires going to the
>right cylinders if it's turned 180 degrees...did you screw up the Hall
>sender unit when playing inside?
>
>Wow, I wasn't going to get so involved.
>Good luck
>alj
>
> > From: Mark Seifert <theburnvictims@HOTMAIL.COM>
> > Reply-To: Mark Seifert <theburnvictims@HOTMAIL.COM>
> > Date: Tue, 20 Apr 2004 00:48:12 -0700
> > To: vanagon@GERRY.VANAGON.COM
> > Subject: Re: rebuilt 2.1 runs like crap - can't figure it out
> >
> > Thanks Doug. The neg. battery cable was a bit loose. I never tightened
>it
> > all the way when I hooked it back up. Thought for sure that must be the
> > problem, so I tightened it down, and it didn't change anything. My van
>ran
> > just fine before I pulled the engine, so I'm pretty sure this has to do
>with
> > something not plugged in right. Does the 2.1 have 2 coolant temp
>sensors? I
> > know there is the one on the thermostat housing, but I dont remember
>ever
> > seeing the other one. Maybe that's not hooked up. I was told that I need
>a
> > new Idle Control Unit because my idle is unstable and it goes way up
>when
> > the A/C is on. Havent replaced it yet due to the price. Could the ICU
>make
> > it run like crap like it's doing now? Don't know, just shooting ideas
>out
> > there.
> >
> >
> >> From: "Doug in Calif" <vanagon@astound.net>
> >> To: "Mark Seifert" <theburnvictims@HOTMAIL.COM>
> >> Subject: Re:      rebuilt 2.1 runs like crap - can't figure it out
> >> Date: Mon, 19 Apr 2004 23:04:36 -0700
> >>
> >> Mark,
> >> The only thing I can think of is connections and fuel.
> >> Make sure your battery is clean and tight,
> >> make sure your fuel inj brown ground wires are clean and tight
> >> make sure your electrical plug fittings in the engine compartment are
>clean
> >> you can use contact cleaner or wd40 make sure they all snap together
> >> properly
> >> make sure you have no unknown wires hanging
> >> make sure you have your oxy sens wire hooked up clean and tight
> >>
> >> cant imagine the dist gear can cause it but if all else fails get
>somebody
> >> with a dist drive puller and put it in proper to be sure its not the
> >> problem.
> >>
> >> After that its air flow meter and fuel injection diagnosis time.
> >> Get out the bosch manual
> >> A tool to read the oxy sensor can tell you if rich or lean in the tail
>pipe
> >> That can help to sort out fuel injection problems.
> >> If it ran 6 weeks ago and nobody dumped anything in the fuel and you
>didnt
> >> drop any parts or damage them with water etc. you likely have a bad
> >> connection someplace or something is hooked up wrong.
> >> clean and check those grounds and the temp sensor connections.
> >>
> >> Best of luck,
> >>
> >> Doug
> >>
> >>
> >> ----- Original Message -----
> >> From: "Mark Seifert" <theburnvictims@HOTMAIL.COM>
> >> To: <vanagon@GERRY.VANAGON.COM>
> >> Sent: Monday, April 19, 2004 10:08 PM
> >> Subject: rebuilt 2.1 runs like crap - can't figure it out
> >>
> >>
> >>> I just rebuilt my 2.1 waterboxer and put it back in my van. I got it
> >>> running, but it's not doing too well. First problem I had was the
>firing
> >>> order. Got that figured out. I think I put the distributor drive shaft
> >> in
> >>> wrong, but from what I understand, that doesn't matter because you can
> >> turn
> >>> the distributor any way to compensate. Valves were clattering a lot
> >>> considering all the lifters are new. so I re-adjusted the valves. Two
>of
> >>> them were loose. Took care of that quickly. Did a compression test.
> >>> Compression was good. Pulled injector wires one at a time, but it
> >> doesn't
> >>> seem like any one cylinder is missing constantly. Checked the timing,
> >> and
> >> it
> >>> looks good, although the mark bounces around a lot. The problem is
>that
> >> it
> >>> has a rough idle and it hesitates on acceleration and at constant
> >> speeds.
> >>> Gas pedal to the floor at 65 mph. The cap and rotor don't look so
>great,
> >> so
> >>> I'll be replacing those tomorrow, but I don't expect it to make a
>whole
> >> lot
> >>> better, because there seems to be a serious lack of power. Hopefully
> >> someone
> >>> has a suggestion. My van has been sitting for 6 weeks, and I can't
>wait
> >> to
> >>> take it out on the road again.
> >>>
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>


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