engine runs like crap after it warms up but runs fine when its cold

[sway2this]

we just put a new crank in my 96 gs 2.0 n/t.
when my motor is cold and we 1st start it up it runs perfectly fine.
but after about 5min or so when the engine warms up,it starts running like crap.
like it keeps wanting to die but it doesn't.
it only does it wehn the engine warms up.
what could be causing this guys?
i need help asap!!!
charles

 

[girlieracr4g63]

Are the timing marks lined up?

 

[sway2this]

yea the car is in time.
i'm thinking it may be my tps.
i'm gonna change it tomorrow and see!!
charles

 

[sway2this]

anyone??

 

[Rick4g63]

Make sure these items are verified to be correct and working:

- Timing belt is on correctly and not "one mark over"

- The TPS, Crank sensor and cam sensor are good and operational.

- The MAF, fuel filter, EGR and All Vacuum lines are correctly connected and replaced if necessary???

- The check engine light comes on??

I would try to get a RTS engine analyzer connected to it (mitsu dealer....might have to pay a service charge) and this unit can perform real-time engine analyzing. With the engine running you can see TPS, crank and cam sensor output, injector pulse width, etc.... to help pin point failing components.
good luck

 

[DSMBOY123]

Well when you engine is cold is works fine, but when its hot it stumbles...hmmmm
did u try checkin all the connections to the sensors? are u getting a check engine light?
I was thinkin about the oxygen sensor

 

[sway2this]

Well when you engine is cold is works fine, but when its hot it stumbles...hmmmm
did u try checkin all the connections to the sensors? are u getting a check engine light?
I was thinkin about the oxygen sensor

yea i've checked all the connections and the check engine light does not come on.
the car runs perfectly fine driving down the road,its just wehn i come to a stop and the car is idiling,it starts to run rough like its missing and wants to die.
i guess i'm gonna end up and have to bring it to the dealership and get it put on their computer so see whats wrong with it!!
charles