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Re: '91 Saab 900 acceleration/idling/running problems
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Posted by JohnK (more from JohnK) on Mon, 8 Mar 2004 12:10:38 Share Post by Email
In Reply to: '91 Saab 900 acceleration/idling/running problems, Tommy, Fri, 5 Mar 2004 21:13:34
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Could be that your crank position sensor is bad(intermittently disables ignition), and that your oil leak is coming from the crank seal inside the crank pulley(aka harmonic balancer). This oil leak could have caused the crank sensor problem, since they are at the same spot.

Get a flashlight and look for the oil leak near the firewall. If leaking there, to fix all this you need a new crank seal, oil pump oring, and crank position sensor. If this is where the oil has been leaking for awhile, there is a good chance that your crank pulley should be replaced, too. The pulley has a rubber donut between the hub and the outer pulleys, and oil will rot the donut. Eventually, the pulley will start slipping and will grind into the engine causing a catastrophic leak and loss of oil pressure. All these parts are available from site sponsors for around $150. You can fix it yourself, if you have a set of socket wrenches. and a free weekend. Labor at an shop should be about 3 hours at going rate.

Do searches on harmonic balancer and crank position sensor and you will find many posts on the subjects.

posted by 208.208.152...

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