Weird Engine

[turbo85]

Hi turbo85,
I like to help you, I have own a corolla seg. So can you tell a bit further, how the engine stop, does sputter couple of times like before dying or dies imediately. If it sputter than it means fuel supply but if dies off imediately than its ignition related.

fuel supply can be:
1. dirt in fuel supply or clogged fuel filter
2. ISV clogged (idling stabilizer valve)
3. low fuel pressure due to fuel pump
4. faulty fuel pressure regulator
5. faulty fuel injector
if ignition related than could be
1.faulty ignition key switch
2.engine speed sensor in distributor(depends on model, also can pop up error code when dignosed with engine check lite)
3. ignition coil in distributor
4. ecu
These are somethings that i can think of. good luck.


4.

The mechanic has changed the Distributor, Spark Plugs, clean Throttle Body, BUT problem still exists, especially during morning when the engine is cold

Could you please help to narrow down the possible causes of the problem so that I can solve it? :dong:

tqvm

 

[huakenny]

hv you check the idle solenoid? and also the gasket seal for that?

look at there tb, it got 2 water hoses joining tat one. check tat one

 

[turbo85]

The problem occurs only when the engine is cold, is that related to idle soleniod and seal gasket?
I am afraid of checking and changing those unrelated stuffs d, it hurts my wallet.

 

[ayathu]

The mechanic has changed the Distributor, Spark Plugs, clean Throttle Body, BUT problem still exists, especially during morning when the engine is cold

Could you please help to narrow down the possible causes of the problem so that I can solve it? :dong:

tqvm

Bro since it happens only during engine cold than the logic thing to check will be contacts for

example your key ignition( its actual a switch so got contact inside it), battery termination,

alternator termination. Try checking these, who knows that might be the problem, cause this

happened to my brothers civic FD, the battery +ve terminal was loose, the engine die off

intermittently, after tighten terminal problem solved.

 

[nyantong]

Since your car has OBD, why not use a diagnostic tool to retrieve the fault code first before making any repairs? If there's a fault code it would be much easier to determine what's wrong with your car.