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not cannot rev over 2000rpm from cold?

J

Jdc2

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Location
London
Car
Accord
Hello,

I have had this car for about 2.5 years now and this fault with the car for 2 week now.

The Accord is 2004 2.2 CDTI sport.

The car will not rev over 2000rpm when I stating the car from cold. They are no light on so inform your that sum thing is wrong. All work how it should just you cannot rev over 2000rpm.

Now if you drive the car to when the car get to it normal running temperature. Then park up for 5 min with the engines off. Then all is ok.

Now the car was sever 8000 miles a go with Honda part.

And lest week I put in a new Honda fuel filter and still the same.

Then I pug in for the fault codes. When the car run from cold it say the is a fault with the glow plug. But when I stated from normal running temperature there are no fault.

So I then test the glow plug one by one. All ok.

So why can I not cannot rev over 2000rpm from cold?
 
I would not advise going over 2k rpm when cold anyway. Give your oil a chance to warm up and lubricate the engine / turbo correctly before you start requesting boost.

I would put your issue down to a sensor.. maybe coolant sensor .. but never heard of it not letting you rev over 2k before.
 
Hi J.

This is an odd one - the car is going into limp mode without an ECU warning light or storing an error code. I think you need to take it to a garage with a Honda Diagnostic System.

I'm almost tempted to say ECU fault!
 
Very weird indeed you say a glow plug fault when cold as Adam said this might be a sensor but im not sure what.
Make sure you have no air in your fuel system by bleeding the FF.Also something to look at is cleaning your MAF sensor as it might be giving false readings to your ECU when cold.
 
TheHole said:
I would not advise going over 2k rpm when cold anyway. Give your oil a chance to warm up and lubricate the engine / turbo correctly before you start requesting boost.

I would put your issue down to a sensor.. maybe coolant sensor .. but never heard of it not letting you rev over 2k before.
Click to expand...

it only when i stating the car from cold (eg 1st thing to go to work). you let it get up to normal running temperature and you can not go over 2k rpm. i have to stop for for 5 min. i find this out when i stop to full up the car.

Jon_G said:
Hi J.

This is an odd one - the car is going into limp mode without an ECU warning light or storing an error code. I think you need to take it to a garage with a Honda Diagnostic System.

I'm almost tempted to say ECU fault!
Click to expand...

i was think i would need to be book in for Honda to look at.

brett said:
Very weird indeed you say a glow plug fault when cold as Adam said this might be a sensor but im not sure what.
Make sure you have no air in your fuel system by bleeding the FF.Also something to look at is cleaning your MAF sensor as it might be giving false readings to your ECU when cold.
Click to expand...

i test the glow plug with a car battery and jump leads.

i will re-bleeding the FF, re-est the glow plug, cleaning your MAF sensor, and re-set the ECU.
 
Perhaps something in the circuit is preventing the glow plugs from being turned on so the ecu is putting it in to limp mode
 
Maybe drop Fahad a PM as he can offers the Honda diagnostic service now and it's very impressive indeed. He's always down south so maybe you could meet him up.
 
It's almost definitely your glow plug relay.

I'm down south this week, last night tonight then back up north tomorrow evening so drop me a PM if you can get to me tonight.
 
I have now fixed this.

This time I set up the glow plug so I could test them all at the same time. Now one of the glow plug look like it was run at 50%. So I put in 4 new glow plug and ok now.

So thank for all you help one this on.
 
As a slight aside, I'm always a little surprised at how often it seems that glow plug issues cause major starting & running problems. Unless I've had to actually scrape ice from the windows, I don't usually bother to wait for the glow plug light to go out before starting the engine... so I'm guessing that - even without waiting - the glow plugs are still helping to get my engine running?
 
Jon_G said:
As a slight aside, I'm always a little surprised at how often it seems that glow plug issues cause major starting & running problems. Unless I've had to actually scrape ice from the windows, I don't usually bother to wait for the glow plug light to go out before starting the engine... so I'm guessing that - even without waiting - the glow plugs are still helping to get my engine running?
Click to expand...

I don't know the details of Honda's glow plug operating strategy but I do know that glow plug systems don't operate quite as we might think. The glow plugs are there principally to help starting a cold engine but they typically remain on for quite sometime after the engine has started to ***ist with proper combustion of the fuel until the combustion chambers have warmed up. It can be confusing because the glow plug light on the instrument panel goes out long before the glowplugs themselves are switched off.
 
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