RPM drops while driving

[zacki]

1. Start the car
2. RPM goes up and drops to 1000 rpm
3. Suddenly, it will goes up again to 1500 rpm and stays there and the engine lights lit up
4. Try to drive it and the RPM drops until the engine will turn off.

What could be the cause? Hope you can help me on this one, thanks!

 

[lordconwell]

Is the engine cold when it does this or hot?

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[zacki]

The engine is still cold

 

[civic402Lx]

Pull the code. See what its telling you.

 

[XpL0d3r]

The CEL is your friend, pull the code and that should surely identify your issue.

How does the car run when it's at normal operating temp?

 

[zacki]

The CEL is your friend, pull the code and that should surely identify your issue.

it tells it's the map sensor, just replaced it but still the problem occurs

How does the car run when it's at normal operating temp?

haven't tried to drive it at normal operating temp, recently change the rings and i set the fan directly.

 

[lordconwell]

Cold air idle controle valve stuck open or cooked

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[XpL0d3r]

You replaced it and the same code came back? What was the code?

I agree with above too, try cleaning your IACV.

 

[zacki]

Cold air idle controle valve stuck open or cooked

ok noted on this, thanks

I agree with above too, try cleaning your IACV.

thanks, i'll try this one

 

[zacki]

problem solved!
culprit is wiring connection of the map sensor

Thanks!!!