? im clueless ? it turns off when i touch the gas and turns on when i let off the gas

 

narrow range tps sensor is bad.

buy a new one from mazda

 

had the same problem on my 90 gxl, not sure if this is true but someone told me I had a bad TPS ( throttle position sensor).

 

thanks

 

360 from mazdatrix, that's probably your best bet unless you can some other discount somewhere else.

 

wow i have the same problem....it also occurs to me that the tps when it goes bad do you guys experience a low 500rpm idle??

 

The tps could very easily just need to be adjusted.

TPS tester http://www.banzai-racing.com/products_tps_tester.htm

how to http://www.banzai-racing.com/TPS_adjustment.htm

 

If an S5 needs adjustment, it needs replacement. It won't be able to produce smooth voltage across the range. That's especially true with the full-range sensor, but also for the narrow range.

 

I have the same problem on my '89 vert, I just leave it that way since it really doesn't affect the performance of the car unless I let off the gas. It probably needs a good adjustment to get it to work properly.

If you are looking to replace it, here is a website that blows Mazdatrix price out of the water for a new TPS: http://catalog.drivewire.com/drivewi...on=919777&fm=1

 

ooh....nice find.

I prefer the resistance method of adjustment, but even that only gave me perfect results for 1 month before the tps went bad further.

You don't need the tps tester to do the two lights method posted above. Two digital multimeters will do the trick. On = 12V off = 0V. If you're good enough, and can discern how the voltage is affected by the rotation of the screw, then only one multimeter is required.

I see the two lights method as a rough adjustment and the resistance method as a fine adjustment. However, I've adjusted too many S5 TPS's to know that adjusting them is pretty futile.

 

The bad thing is, that website had them on sale about 3 months ago for $136 and change.

 

would the tps cause the car to "backfire" a lot cause mine does, when i let of the gas?

 

yes it would...the injectors are staying open and dumping fuel into the exhaust system.

 

Obviously it wants you to get on the gas and go zoom zoom