carjunkie12

hey guys. so i have been having car troubles. while I'm driving, in any gear, my car will jump on the rpms all over. and my car is jolting. and it sounds as tho its dying but not. it'll happen at any rpm level, any speed, and all gears. now this is not all the time. so i took it to the shop and had a tune up. also had fuel injectors cleaned and inspected. had it timed and what not. got it back and had no issues for about 2 day. then it started back up. i thought maybe it was my tps since it wasn't connected. well i fixed my tps and its still acting up. also in the mornings when i start my car, it will sometimes die upon start, so ill give it gas on the next try and it'll just sputter for about 2 seconds then die even with the pedal to the floor. takes roughly 4-6 times before it'll crank and not die. any ideas? I'm spread thin and don't know much about rotaries. anything will help..

clokker

iTrader: (2)

It's an interesting, nay, revolutionary, approach to a tune up that leaves the TPS disconnected.

If these same visionaries had the injectors out, the connectors could have been switched.
You could have massive vacuum leaks where manifolds were removed.
The timing could be who knows where.
All of the above.

carjunkie12

well it has been happening before it went to the shop. he did say i had a small vacuum leak but nothing to cause anything. but for all i know the dude prob doesn't know what he was doing because he was trying to charge me $1000+ just to buy and put in new injectors. could it possibly be apex seals? and what would be my best approach on this problem?

clokker

iTrader: (2)

I'd say he knew exactly what he was doing.

There are no "small"/acceptable vacuum leaks.

If you suspect apex seals, compression test it.

What exactly do you have anyway?
And pics are always helpful.

carjunkie12

i have an 1986 13b fuel injected. and maybe my tps is shot? do you know where i could find a new one? and there is sadly no one other than the guy i took it to who will touch it. even the mazda dealership has turned me down saying they won't work on it. closest place to me that will is over 200+ miles. and i don't want to take it back to this guy for the prices he is trying to charge me. i honestly don't know if he even did anything. also is there anywhere that i could get a diagram of the vacuum lines? i know the guy who had it before me had capped off a few lines and there are about 3 lines hanging but have no suction.

clokker

iTrader: (2)

The factory service manual is here.

Free download, all the info you need.

carjunkie12

thank you. and do you know where to get a new tps? I've only found 1 and it was almost $300

misterstyx69

iTrader: (142)

Any Mazda dealer or Mazdatrix or Ebay can supply you with a NEW Tps.
If you buy a Used one,remember that an N/A and Turbo TPS can be swappable,they are the same in series 4.(S4).
But I can tell you it is not your TPS.
You said so yourself.Not connected,then connected and it still did the same thing.

If you paid for your car to be worked on then it should Work.Go back to the shop.

satch

iTrader: (1)

Has the TPS been adjusted to spec yet?

clokker

iTrader: (2)

I'm guessing the hood has yet to be raised.

carjunkie12

i have adjusted the tps. if I'm right its supposed to read at 1v?

clokker

iTrader: (2)

Yup.

carjunkie12

okay it reads 1v. now with it reading 1v my rpms read between 1k to 1500?

satch

iTrader: (1)

If the engine is fully warmed then perhaps your timing is off or the throttle cable is too taught and so on.

carjunkie12

okay thanks guys. i have a few more questions however pics would be best for them, I'm on a hunt to find my camera, once i find it ill upload the pics with the questions. and thanks again.

KronicKrazy

definately go buy a chilton book for about 30$. they have diagrams of the vacuum lines and pretty much everything you need to know to repair your car. ive taken my car to mechanics and they havent done dick to help my car at all, and they knew they didnt do anything because they didnt even complain when i left without paying them. i dont know much about cars and ive done more for it with the help from this forum and a few books then any "mechanic" ive taken my car to. also go to youtube because there are videos of every kind of repair.