Bowdowntome

How bad can a bad tps be on performance. Im pretty sure mine is shot to **** but I will not be sure till tommorow. My multi is a cheap 8 dollar one and it dosent read down that far. Thanks

GUITARJUNKIE28

what year is the car?
when there's a problem with the tps, the ecu assumes WOT, which causes it to drown in gas and stumble like a ****

Bowdowntome

its a 91 n/a and I just checket it and it is all over the place. VERY erratic.

Bowdowntome

How bad would it affect it at WOT. Just asking because the car is pretty sluggish.

GUITARJUNKIE28

could possibly effect wot if it's not adjusted right.

is it just slow, or is it backfiring or missing?

mazdaverx713b

iTrader: (91)

the tps can make the engine fall flat on its face and it can cause high and or erratic idle problems. it can make the engine buck atcruise and will help determine air fuel ratio.

GUITARJUNKIE28

but i've never seen a bad tps cause the vehicle to just accelerate slowly.

mazdaverx713b

iTrader: (91)

it has happened to me

RotaryWeaponSE7EN

iTrader: (6)

me too

mazdaverx713b

iTrader: (91)

it can even cause erratic problems on a 12A and her stock nikki! for those who don't know, yes the nikki has a tps

Bowdowntome

It backfires quite a bit but I am assuming that is from too much gas and no cats. It dosent miss though.

mazdaverx713b

iTrader: (91)

backfiring is common in a rotary, especially when the timing has been played with or someone has messed with the mixture screw

GUITARJUNKIE28

you mean your car would accelerate smoothly, just slowly? i find that hard to believe.

Bowdowntome

not exactally smoothly ,but it dosent mis, it is constant accelerating but it wil be a hard pull then it will fall off to a softer pull and so on and so on.

mazdaverx713b

iTrader: (91)

it accelerated smoothly up to about 5K and then it sputtered and would not pull. up to that point, the car was just slow, feeling as if it were extremely under powered. perhaps like a converter were clogged.

GUITARJUNKIE28

ok, now that, i believe.
i wish i lived closer when you guys were having these problems...i love figuring that stuff out!

mazdaverx713b

iTrader: (91)

i have been working on my SE since october and it just now is coming into its own. i know the timing is still dicked a little but we are getting better after the new tps.

GUITARJUNKIE28

on n/a's i just crank timing up until it starts missing a little bit @ idle, then back off a tad from there. then use premium. it helps out with low end power, throttle response, and gas milage.

not the safest thing for turbos though.