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Re: Wandering Cruise Control & Re: Replacing Oil Pump O-Ring and Crankshaft Pulley
Posted by David Prantl (more from David Prantl) on Mon, 6 Dec 1999 18:36:36
In Reply to: , Kok Chen, Sat, 17 Dec 1988 12:00:00 

I had the same symptom, with easy fix !

The vacuum hose between the pump (left fender) and actuator (behind gas
pedal) was the problem.  It had become a little brittle at the pump end.
The pump was sucking as hard as it could to keep the gas pedal pressed, but
just enough vacuum was getting away to cause a gradual slowdown of the car.

Best solution is to replace the whole length of hose, but getting to the
pedal acutator can be somewhat of a pain.  An easier solution is to replace
just the hose section running in the engine compartment along the fender to
the pump, and splice it to the rest of the hose going into the passenger
compartment.  The simplest 'emergency' fix is to clip off an inch or so of
the hose at the pump end, and reattach (to the correct nipple !).
---
I did the same things to an '89 900 recently.

The outer (A/C) pulley wheel was extremely difficult to remove, as you 
pointed out.  I had to do a little grinding on my 10mm socket to get it to 
work.  Upon reassembly, I used internal-hex-head cap screws instead of the 
10mm bolts, working with a shortened (ground-down) hex wrench.  Much easier 
than fiddling with those standard bolts and a socket wrench with less than 
0.5' firewall clearance.

The pulley bolt required a 30mm socket (earlier style).  A 12-point 
1/2-drive Craftsman 30mm socket on the end of a Craftsman 2-foot 1/2-drive 
flex handle slipped onto the bolt head, using just the right arc of travel.  
I was told it could be done, and didn't give up until it worked !  No idea 
about clearance differences between '89 and '91.

Sliding the components off the end of the crank was quite easy in my case.

Mine is also an automatic.  To block the flywheel, I took off the plastic 
torque-converter shroud and blocked the ring-gear/starter-pinion-gear teeth 
at the point where they mesh with a steel bracket (appropriately bent).  
Works in either direction.

As for the bolt you dropped, I would suggest checking the thread size using 
one of the bolts from the A/C tensioner pulley bracket.  They should be the 
same.  As for length, I like to put a piece of bent wire in the hole, and 
measure it that way.  Buy 3 bolts at the hardware store:  One of the 
measured length, one shorter, and one longer.  A washer might be appropriate 
also.  Don't strip out any of the tensioner bolt holes.  That can be a 
really big PITA.


Best regards,

David Prantl
david_prantlno39sdcx6spamx782hotmail.com
'84 900S, 210kMi, RIP
'86 9000T, 172kMi
'88 9000S, 136kMi
'89 900, 115kMi
'68 97 Sonett V4, 76kMi, #000467
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