I've had a similar problem to this and it turned out to be leaking air in the pipe between the plenum and MAF ... The big 3 inch diameter pipe. Mine always seems to work itself lose from time to time ...
Other than than ... The distributor advance tube also rots out and is worth changing ... Cost about $1 from autozone.
Ps I'm not an expert as my other current thread clearly demonstrates!
Originally Posted by rijosho
Soapy water / KY jelly, etc. is is basically a must. Yes, good idea to remove trim panels - only takes 5 more minutes to do so.
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