Why it is hard to start first thing bin the morning?

5

Asked by May 15, 2015 at 03:06 PM about the 2000 Acura RL 3.5L

Question type: Maintenance & Repair

When it starts in the morning the idling is rough for about a 30 seconds to a minute, once
it starts, it will runs all day without a problem.

3 Answers

I don't know where it is on an Acura but every modern car has a sensor that tells the ECU the engine is cold, to give it a rich mix for cold start. Some cars simply the coolant temp. Others a head temp sensor. Keeps it in open loop until warmed up. No check Engine light on?

26,535

HATE TO SAY IT. CHANGE THE FUEL FILTER AND RUN 2 CANS OF FUEL SYSTEM CLEANER THRU IT.A FEW EXTA LBS. OF FUEL PRESSURE MIGHT JUST FIX IT UP...

5

Thanks, my engine light has been on before this, it was never reset after it was serviced.

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