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How much does the throttle position sensor cost and where is it located on my mazda 2005 mpv

How much does this part run and where is it located on my Masda 2005 mpv

I need to use the manual pin to unjam the transmission selector

would like to change my fuel filter myself

Vehicle has 121,000 miles on it. Local Oil change service company said CAM timing sensors were bad. No codes on then or now. They just thought that would be the fault. Took it to Buick dealer and replaced plugs and wires and ran BG fuel treatment through sytem. Did not replace CAM sensors. Surge going down interstate is only slight, like moving gas pedal back and forth. Rough idle is very slight at stops but can vary in degree. Dealer drove vehicle with computer attached and found nothing. They said one time while idling in shop, engine stumbled slightly but not enough for computer to register it as an engine misfire. Technician thought it may be slight injector misspray on cylinder 5. Put full tank of premium gas and some Sea Foam in (1 oz per gallon). Been running this for a week now and no improvement. I suspect a bad Oxygen sensor or possibly fuel injector. I haven't replaced fuel filter in a while but it doesn't seem to be a fuel supply problem. Not sure if Dealer checked fuel pressure. If there is a vacuum leak I haven't found one unless it is very small. Sitting at idle, the RPMs fluctuate slightly maybe 100 to 200 RPMs on the tachometer.

howling in the what sounds like rear end at lower speeds 35-55. If you let off the gas you don't here it. After you get up to 65 mph plus i don't hear it. Is this anything serious?

Also when you leave the key in the ingintion it doesn't beep anymore. I had a dead cell on the battery and I put a new battery in over the last weekend and that is when the problem showed up. I checked the alternator and it is charging the battery

is there something i am missing in repairing this, as i purchased another and it is locked before i install it

HAVE TO TAP LIGHT IN PLACE . NOT SURE IF NEED THE ADDJUSTERS. FOR LIGHTS BUT NEED BRACKET FOR LIGHT IN FRONT

all the gagues fuel speed and temputure bounce up and down

i have purchased a new ignition cylinder and replaced it. - it still does the same thing. the new key and cylinder are somewhat loosely turning inside there. there is no tension or spring action returning the key when you turn it all the way to engage starter. how can I start my car?? im stranded!!

one person told me that it could be the fly wheel and one person said it could be heat shield..

my ford van when driving down the road at high way speed,it will jerk in and out like its cutting out,it doesnt do it steady just every few minutes it will act up,then go back to running perfect,and when idling you can feel it kinda cutting out,feels like it quits getting gas for a second,or aint getting enough. fuel pump is working fine you can hear it.when you turn ignition on or if you crawl underneath. could it be fuel filter partially plugged,just bought van few days ago,runs and shifts great except for this issue,motor is the 5.8 thanks

FAILED SMOG. TOOK IT TO SHOP. GUY SAID HE REPLACED THE THERMOSTAT AND TWO SENSORS. WHEN I PICKED IT UP THE ENGINE LIGHT WAS OFF BUT BLUE COOLANT LIGHT STILL ON. NEXT DAY GOT A SMOG IT PASSED. THEN THE ENGINE LIGHT CAME BACK ON. WHAT COULD BE WRONG?

car is in great shape, original owner, not sure if it is a shork or strut problem, or normal