I have a small problem. It seems as though my car runs different every time I start her up. She's got 103,000 miles and runs smooth sometimes, and others, she seems to run...I don't know...kind of uneven. Could this be a timing problem? Maybe it must needs adjusted? Do I need a timing chain?

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91 TA 5.7 TPI Automatic.
w/WS6 and 3.23 rear.
K&N Air Filter,Hypertech Coil,Moroso Blue Max Wires, Bosch Platinum plugs gapped at .050,
JET fan switch,JET air foil,Dual cats with Flowmaster 3" exhaust (Headers coming soon),GM Performance PROM, Complete PST components on front suspension, Spohn LCAs/Panhard bar.
My car only uses Mobil 1 transmission fluid, oil, and differential fluid.

 

Does ANYONE have any input on the subject?


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91 TA 5.7 TPI Automatic.
w/WS6 and 3.23 rear.
K&N Air Filter,Hypertech Coil,Moroso Blue Max Wires, Bosch Platinum plugs gapped at .050,
JET fan switch,JET air foil,Dual cats with Flowmaster 3" exhaust (Headers coming soon),GM Performance PROM, Complete PST components on front suspension, Spohn LCAs/Panhard bar.
My car only uses Mobil 1 transmission fluid, oil, and differential fluid.

 

It's not the timing in all likelyhood. Beg borrow or steal a scan tool. Intermittent drivability problems are always some engine sensor getting flaky and lying to the ECM. You can't diagnose much without seeing things as the ECM sees them.