[MR2] My typical DIY job
BARRY S DAVIES
bsdavies at q.com
Wed Feb 9 01:42:44 EST 2011
Its not often you have to replace the O2 sensor, so yeah, just cut out the connector, run some new wire down there and heat shrink it. Repat in another 5 years!
That O ring in the distributor does just go hard. Last one I replaced actually had a square cross section!
Good luck and stay out of those bars!
From: wbrandt1 at sbcglobal.net
To: bsdavies at q.com; mr2 at mr2.com
Subject: Re: [MR2] My typical DIY job
Date: Tue, 8 Feb 2011 22:05:57 -0800
Thanks Barry - I will resume looking tomorrow. It was the damnest thing - I certainly was smart enough to not pull on the wire but the connectors (I hate those Toyota plastic connectors ) - and suddenly I had a completely free wire.
It had to have been weak at the top.
At the very worst I thought I could go to the wrecking yard and take an old harness off - but in tracing it back to the other side of the engine - it seems to be wrapped in "something" - it would probably be a job. And after all that work I'd still have an old 25 year old wiring harness.
It would probably be a lot easier just soldering the broken wire and putting some heat shrinking tubing around it.
As an aside the original connector to the O2 sensor is still on - as tight as a tick - Of course now I know I didn't have to touch it ;-)
Got the distributor off and the O-Ring on the shaft wasn't broken but hard and brittle - I am wondering if a good O-Ring expands to block the oil - hard and brittle ones do not expand, of course. Years ago I had an auto transmission leaking from the bell housing - on disassembly the 8" diameter O-Ring was so brittle you could snap it into pieces -
I remember the last time I put in the distributor it too seemed to be difficult - even though I had the hole on the shaft aligned with the mark on the cam and at TDC - like trying to put the transaxle back on the spline -
Oh well, this keeps me off the streets and out of the bars - working on Mr. 2!
Thanks for your input!
----- Original Message -----
From: BARRY S DAVIES
To: wbrandt1 at sbcglobal.net ; MR2
Sent: Tuesday, February 08, 2011 5:58 PM
Subject: RE: [MR2] My typical DIY job
I've repaired a few of those cooked O2 wires.
The wire exits from the exhaust side of the wiring loom retainer (for want of a better description) which runs along the top of the upper timing case cover. It then dangles down to a pale yellowish white connector about 8 inches down the engine, round about the level of the oil sender.
> From: wbrandt1 at sbcglobal.net
> To: mr2 at mr2.com
> Date: Tue, 8 Feb 2011 16:56:05 -0800
> Subject: [MR2] My typical DIY job
> Well, had an interesting MR2 day today. Since I couldn't buy a new passenger side seat belt (old one wouldn't retract; unavailable at dealer now)
> Car was throwing oil; it seems to have come from the distributor - not leaking internally so I ordered a new O-Ring.
> Pulled distributor and in doing so managed to break the wire that the O2 sensor connects to - I suspect all the oil coming out of the distributor onto the wire + the exhaust manifold cooked the wire.
> So I am trying to figure out where that wire from the O2 sensor went - hopefully I can solder it back together with some heat shrinked (what do they call that stuff?) -
> Whatever a pro can do in 1 hour I can do in a week ;-)
> I'll bet a lot of those 1st gen cars have cooked wiring harnesses - I see one wire going right under the exhaust manifold -
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