Need help ASAP with motor
 

Need help ASAP with motor

here what happens
car ran mint in summer,
now with cold weather the car dosent really wanna start
will try to turn over and die,
or if i hold the gas down it will but it makes back firing nosice kinda and sits at a really low rpm and tries to die but slows rasies and once over 1500rpm runs ok
after about a min of doing that car runs perfect warms up and no problem starting
leave the car for about 5-6 hours it trys to do it but still starts no problem kinda like a 1-2 sec of doing it

only after leaving it for the night so 10-12 hours of cold

what could it be ???


motor is a DX 1.5 from a 93

some people are saying to clean the throttle body or a sensor behinde it no clue

if any one knows please let me know pm or post on here

once again Thank you

Could have a clogged IACV.

Hows your fuel economy, notice any decrease? Have you read your plugs yet?

could also be your o2 sensor, also could be your engine running really rich, my car was doing the same thing when i was using a mugen chip, which made it run rich as hell..

o2 senor was changed this summer due to etest, not running any chip or anything

havent checked the IACV

althought was thinking of taking full throttle apart and cleaning it

where is the IACV located and what would i clean it with??

oh and pluges where changed about 12 months ago

remove the intake tube, turn on the car on the top firewall side of the tb there should be a little port. Put your finger over it, see what happens.

Oh.. and it's not your o2, don't worry lol

it could also be a leaky injector. my buddy's jeep had similar symptoms, all 6 injectors were found to be leaking.

what grade oil you running?

My car does that too. When you start the car dont touch the gas or anything mind you let it warm up. Im pretty sure its your IACV just cleanit with some carb cleaner. Valveseals?