I got upper intake manifold Tightened. Funny thing is I brought a torque wrench and tightened as specified by "alldata" and got bad results with more stumbling. I tightened bolts more than required and trunk runs better. I drove for a few days with no problems until my last day of work than I got that stumble/stalling on initial stepping on gas than it takes off like it got a tuneup. I took it to auto zone and got different code. A PO102, which has something to do with a crack hose or defective mass air flow sensor. I had already replace sensor, so I inspected hoses found one that comes from top of intake manifold parallel with "brake booster" hose and T's off with other hoses and goes down to driver side fender. I searched "2carpos" and found similar issue appears to goto some vacuum switch. I purchased a 7/32 vacuum hose and replaced brittle hose. This made check engine light go off. I the other part of T offed hose seems like 5/32. I will ride around again to no for sure if this was problem. Thanks.
Saturday, September 15th, 2012 AT 12:57 AM