loss of power

[bigdoug3022]

hey guys got a question. the last two times i have been autocrossing ive had a little problem with my 97 gst spyder. ill be coming around a turn let off the gas and then go to wack the gas a again and theres a second or two delay before it comes back to life. it feels like it hit a brick wall theres is no response and no its not fuel cut . i was leaning towards maybe a bad maf sensor or a tps or something but i dont want to just throw parts at it. has anyone else ever had this problem? any input would be much appreciated!

also put new plugs in it bpr6es and gapped to .025 . its a stock motor with an exhaust and fmic.

stock boost

 

[cl1ckclack]

sounds to me like the same problem mine was having when my TPS went. do you have a wideband to watch?

 

[bigdoug3022]

Yea that's also what I was thinking. No I haven't had a chance to put it in :/. Did your car throw a check engine light??

 

[cl1ckclack]

it took a while for my car to throw the code. but eventually it did throw one.

 

[bigdoug3022]

ok i will check that thanks for the input!

 

[cl1ckclack]

also, if it starts to buck when decelerating, or accelerating. it is definitely the TPS. my car didn't do that at first. but after a while it started to do that.

 

[bigdoug3022]

That's exactly what it does . It's just starting to get bad now but there's no check engine light on but I'm also on v3 lite. Thanks again man I appreciate the quick response!!

 

[cl1ckclack]

no problem bud. i came to the conclusion that the bad throttle position sensor was causing the ECU to be in the wrong loops. so the car tried to run for example it would be in WOT, while it was idling, or closed loop while i was at WOT>

 

[bigdoug3022]

yea ill hook up my laptop and see whats going on thanks again!

 

[bryanwheat]

Just watch live data to see if the tps is functioning properly. If it is working properly than it should go steadily go up when you slowly push the pedal with no dead spots.