Ok cleaned iav no help replace still low idle in gaer drops to below 500 rpm mark on dash

Reset the PCM. (disconnect the battery, turn on headlights, count to ten, turn off headlights, hook battery back up.)

Disconnected battery same idles just above 500 in park put in gear drops below 500

is it idling smooth?

Has very little wobbly idle

Does it smooth out if you give it a little gas? Or does it continue to run rough?

Seems to have a little wobble at times seting a po138 code idle is a smooth up down not realy a rough idle hardly see it on tach meter just reaby about500 slightly higher in park

Can you test the throttle position sensor?

How can you test tps

Analog multimeter.