NoPistons -Mazda Rx7 & Rx8 Rotary Forum - car turns but wont start

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- - car turns but wont start (https://www.nopistons.com/2nd-generation-specific-17/car-turns-but-wont-start-71628/)

Quote:

Originally Posted by FC_BOY' post='916189' date='Feb 6 2009, 02:45 PM

yes i replaced the spark plugs didnt do the wires. i dont think that is the problem since the motor can hit 3k. what i do notice is that the motor doesnt fight to keep itself running even when i apply the throttle. i am thinking that it is the TPS sensor but i am not sure if a faulty TPS can cause the car to act this way. yet i do have some OEM size wires that have never been used i will throw them in and see what i get.

Adjusting the tps on a 2nd generation car is relatively easy. I bought the "tool" from the dealer for $18.00. It consists of two lights on a fitting that connects to one of the small green connectors near the air box. If you look at the shop manual which you can find online, it gives instructions to test it. I doubt that is the problem.

try starting the car with out one of the fuel selenoids (u have one undetr the steering colum and another in the fuse box i had a 90 that had the same problem if it still show that i dies change ur MAF keep us updated after u check these two things

sounds like a vac leak due to idle jumping so high when it does start and then dying...unless the thermowax is there of course.

boils down to fuel, spark, or air. just keep it simple and go down the list.

kevin.