Hard starting when cold
03-23-2012, 02:58 AM
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Hard starting when cold
1991 Honda Accord 4 cylinder, 4 door, 5 speed.
Starts hard in cold weather. Starts fine in warm weather. The colder the weather requires longer crank times but always starts.
If cold and a tad of carb cleaner is sprayed into the air cleaner it starts immediatly.
Running and idle are fine, everything ok after starting.
Acts just like a small engine cold start with a bad auto choke or faulty primer.
I looked at the Chiltons manual but could not find anything about a cold start circuit or cold start injector like on a older VW I once had.
How can I deal with this? Is it all done through the main computer box and main relay?
Starts hard in cold weather. Starts fine in warm weather. The colder the weather requires longer crank times but always starts.
If cold and a tad of carb cleaner is sprayed into the air cleaner it starts immediatly.
Running and idle are fine, everything ok after starting.
Acts just like a small engine cold start with a bad auto choke or faulty primer.
I looked at the Chiltons manual but could not find anything about a cold start circuit or cold start injector like on a older VW I once had.
How can I deal with this? Is it all done through the main computer box and main relay?
03-23-2012, 05:43 AM
#2
Honda-Tech Member
Re: Hard starting when cold
• Battery starting to get weak maybe?
• IACV/FITV/ABV
You could also look at cleaning/testing/replacing your idle air control valve, fast idle thermal valve or your air boost valve. The CB (90-93) Accords have 3 air metering valves that are used to control the feed of air into the intake under different circumstances. This is Honda's cold start circuit. There is a pretty good DIY in the FAQ.
A couple other things that you could look at;
• Engine coolant temperature sensor and the
• Fuel pressure regulator.
• IACV/FITV/ABV
You could also look at cleaning/testing/replacing your idle air control valve, fast idle thermal valve or your air boost valve. The CB (90-93) Accords have 3 air metering valves that are used to control the feed of air into the intake under different circumstances. This is Honda's cold start circuit. There is a pretty good DIY in the FAQ.
A couple other things that you could look at;
• Engine coolant temperature sensor and the
• Fuel pressure regulator.
03-23-2012, 06:17 AM
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Re: Hard starting when cold
Bat and cranking is fine.
OK on the air sensing and the three air sensors. I didn't have clue. I'll checkout the FAQ. Thanks for the reference.
OK on the air sensing and the three air sensors. I didn't have clue. I'll checkout the FAQ. Thanks for the reference.
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