Where is the tps on a 1991 buick century v6 3.3 lit

Linkage hooked up wrong

i i

Vacumn leaks will cause a high idle as described..but if its the canister line it will only leak when canister purge solenoid is activated . and will likely not affect idle..When you changed the tps did you set it with a scan tool ?? the tps voltage at closed throttle must be set at .47 volts or a whole bunch of wacky things with the Idle can occur...

The crankshaft sensor is bad,or the ignition module,one of the two.

Click on the following free direct Link. It has the correct Belt Diagram for your 1991 Buick Century 2.5L In-Line 4-Cylinder.

Let me know if this helped, or if you have additional information questions. Feel Free to contact me at FixYa.com!

http://www.2carpros.com/car_repair_information/year/1991/make/buick/model/century/1991_buick_century_drive_belt_routing_diagram.htm

have you called a local dealer?

remove the positive battery cable from the post
remove the 3 wires from the starter and the two bolts holding the starter to the block.
reverse the procedure for installation.

Should be the same but look at the pan on the trans should be the same. If the pans are the same and there are the same number of bolts in each pan then you should be fine.

The TPS must be adjusted and set with a voltage meter or a scan tool.