PGT

I still cannot drive my car ,,,what the hell ?? The Mazda dealership is F*#@*ing me . The first time I took it in they said I needed a Trans. so $1800 later it still the same way , then I took it back they said it was the TPS , as did some of you guys ,so I got one of those ( thank you , D. Meyers) , I took it to a private mechanic he said that the fuel pressure is what was wrong with it and I needed a fuel pump , so $200 pump did not fix it , he said it was running lean and the injectors needed adjusting that the dealer would have to do that , So back to the dealer I go , they said the injectors cant be adjusted and that it was the Air Flow Meter , I wasnt going to pay $771 for it so I got one from Atlanta RX7 for $175 . The piece of **** still does not work , People keep telling me how much fun these cars are , This is not fun for me , when does the fun start??? It cranks and idles fine , every now and then it revs all trhe way up when you want it to but most of the time it just starts backfiring through the exhaust ( popped one of my mufflers but thats ok) , Thought it was a air leak but that proved to be negative,. When you put it in gear you can get it up to about 40 MPH if you feather the gas , but if you mash the gas to much it will spit , sputter , backfire and lose speed until you let off the gas , let off the gas and it straightens out . Does this sound familiar to any one ? I'm gonna burn this crap if I cant get it to run , its driving me to drink . Thanks

biorotary

don't know if this will help too much, but at least the fix isn't going to cost you too much $$ and you will eventually need to do so anyway, so...
have you tried adding more grounds to your engine?
have you replaced your fuel filter?
have you done a tune-up (i.e. new plugs, wires, etc.)?

My Junx

Dude I have not had this problem with my rex, but I had that EXACT same problem with my VW GTI. The dealer tried replacing teh TPS and air meter and stuff, but what fixed it in the end was re-doing EVERY connection in the ECU and putting dielectric grease in EVERY harness. Runs like brand new now. The dealer did that for free since I had to bring it to them 4 times in 3 weeks to get it right. Hope that helps.

Nick86

iTrader: (1)

You said that you put a new TPS on it - but has it been adjusted properly? Has it been adjusted lately? 'Cause that is exactly what happened to my car a couple of weeks ago. What I found out was that you can adjust a bad TPS so that it reads well, but it won't stay. I got a new one and put it on, but it didn't make a difference at first. I used the test lights, but it wouldn't ever give me the results I was looking for. I finally got it perfect like this:

Start the car, and warm it up well. Turn it off, and unplug the TPS. Now with a multimeter, measure the resistance between the top and right hand pins of the connector (the side attached to the TPS). The key is to turn the screw until you get 1 ohm. Once you do, open the throttle and you should have about 5 ohms. Plug it back in, and go for a drive. fter a bit, repeat the proceedure. It took me 3 or 4 times before I got 1 ohm with no throttle, and 5 at wot. Now, it runs perfectly and the resistance hasn't changed. Take a look at it again. Good luck,
Nick

KiyoKix

Yea I'm sure it has to do with the TPS. When I was searching through all of the wiring system on the car (that's a lot of fun I ended up having to adjust the TPS. When I first took the car out after doing the wiring, it only got up to around 38 MAYBE 40. After I took it back home I adjusted the TPS and idle and she ran fine (I ran it all the way up to 95 (which doesn't take long by the way and checked her through all 5 gears). So I'm pretty certain that it's all you need to check out. UNLESS you haven't done a tuneup or did one and mixed up the plugs and wires. Just calm down and give her a thorough look over, and ask people what's wrong BEFORE you go to someone you have to pay to tell you...that's what we're here for.