white_ej6

hey honda-tech so recently my car started acting up ... when its cold i can sit there for literlly 30 to 50 seconds leaving it crancked and then it starts and it trys to die but dosent and if i give it throttle the rpm will go down to about 200=300

after the car is warm it dosent do any of that ... what could it be ?

its a 97 with a b20 and i have an optima yellow top battery

Solster

sounds like a Bad ECT sensor

white_ej6

isnt the ect have to do with the coolant and the fan kicking on and all of that ... ?? i did fix something aroudn there the day it started doing that but i belive it has nothing to do with that

nealnanoHX

I would check fuel pressure and see if the pump is supplying good pressure and not leaking down really fast after shut off.

fcm

There are 3 ECT switch/sensor/sending unit, the ECT switch controls the rad fan, the ECT sensor supplies ECU/ECM with engine temp., [most likely your problem] and the ECT sending unit, supplies the temp. gauge with engine temp. 94

white_ej6

can someone explaint o me why would the ecu/ecm ect sensor would be my problem ? what does that have to do with a car taking soo long to start and if you press the gas the car dies you have to tap it to get it at high rpms for about 50 seconds than u can let it go and let it warm up so it can be normal

fcm

The ECT sensor supplies the ECU/ECM with engine temp. so the ECU/ECM can adjust A/F ratio, rich when cold and leaning it out as engine warms up.

If A/F is lean when starting cold starting will be hard but once warmed up, "after the car is warm it dosent do any of that".

This may or may not be your problem but it sure sounds like it, if it went the other way and A/F stayed rich, car would start with no problem but as it warmed up it would run like crap and your fuel milage would take a dump, [this problem is far more common]. 94

white_ej6

ok i got you now ... and yes i see my ect socket is bad ...

b20bFourDoorCivicLX

after reading this, do you think this is why i have to hold my key turned longer then usual after letting it sit for more then 3 hours? all my fan switches have been cut(not by me) so my car is always cold, now because i have my fan direct so when my car start the fan kicks on....

fcm

All your fan switches?
There is only one ECT switch, it controls the rad fan relay, the OP is talking about the ECT sensor, it supplies ECU/ECM with engine temp.

There is also an ECT sending unit, it supplies info to the temp. gauge in the cluster.

If your engine is always cold, [not at proper operating temperature] that is a problem with the thermostat, not because the rad fan is running all the time.94

b20bFourDoorCivicLX

should of double checked my spelling, what i meant was, all the wires that run to the thermostat

el crapitan

on a 90 integra, there are no wires that run to the t-stat

b20bFourDoorCivicLX

well when i went to check why my f*ckin fans arent running, the thermostat had been removed,

el crapitan

the fan won't run unless it reaches a specified temperature
with the thermostat out, it likely won't reach that temp

fcm

Ditto the above^^^ 94

b20bFourDoorCivicLX

yep my cars, a nightmare, when i bought it, had no p.s no a.c no thermostat , no carpet, no back seats, no panels no trunk. nothin just a shell basically and a healthy motor.