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

 

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 ****

 

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

 

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

 

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

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

 

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.

 

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

 

it has happened to me

 

me too

 

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

 

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

 

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

 

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

 

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.

 

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.

 

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

 

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.

 

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.