Poor cold start. 2.2 cdti 2006

[West Wales Dave]

I have this CR-V with very poor cold start problem. I understand the system is similar on Civic's and Accords. Over the past couple of months its become harder to start, perhaps because the weather has got colder over the same period. I noticed the heater plug lamp was going out earlier and earlier over the weeks, and also, when it did eventually start, it would idle at its normal speed rather than being slightly raised for a minute or two.
A fault code had been logged, heater plug problem and battery voltage. I had suspected a failed heater plug, so removed them all and tested them, perfect. The relay "timer" cutting out too soon, fitted a new relay, just the same. And although the heater lamp goes out, the plugs are still energised for another 15 seconds or so. Not a whisper of smoke out the exhaust while cranking, for maybe a minute before she finally starts, then runs perfectly, all day. Starts ok with a slightly warm engine. I get the feeling if it had a pump with an excess fuel button it would fire up straight away. So what's telling the ECU its cold outside and needs more fuel ?? I have fitted a new battery as the old one was about 12 years old, no difference. Engine coolant temperature sensor replaced, MAF sensor replaced and now getting fault P0113 Intake air temperature sensor circuit high voltage !! With the original MAF sensor put back, no faults found. Still doesn't want to start. Any idea's out there. I don't have any data to test the individual components so a bit in the dark.
HELP !!

 

[F6HAD]

Most likely failing glow plugs. Otherwise a sticking egr, try blanking it temporarily. MAF error is likely if you’ve used a non genuine part. Stick to OEM (even a used one)

 

[Channel Hopper]

I have this CR-V with very poor cold start problem. I understand the system is similar on Civic's and Accords. Over the past couple of months its become harder to start, perhaps because the weather has got colder over the same period. I noticed the heater plug lamp was going out earlier and earlier over the weeks, and also, when it did eventually start, it would idle at its normal speed rather than being slightly raised for a minute or two.
A fault code had been logged, heater plug problem and battery voltage. I had suspected a failed heater plug, so removed them all and tested them, perfect. The relay "timer" cutting out too soon, fitted a new relay, just the same. And although the heater lamp goes out, the plugs are still energised for another 15 seconds or so. Not a whisper of smoke out the exhaust while cranking, for maybe a minute before she finally starts, then runs perfectly, all day. Starts ok with a slightly warm engine. I get the feeling if it had a pump with an excess fuel button it would fire up straight away. So what's telling the ECU its cold outside and needs more fuel ?? I have fitted a new battery as the old one was about 12 years old, no difference. Engine coolant temperature sensor replaced, MAF sensor replaced and now getting fault P0113 Intake air temperature sensor circuit high voltage !! With the original MAF sensor put back, no faults found. Still doesn't want to start. Any idea's out there. I don't have any data to test the individual components so a bit in the dark.
HELP !!

The Accord (well my Tourer) had a double earth run, joined for some reason with some superfluous bracket and bolts under the battery tray. There is a thread on here I posted a few years back

After removing the linking brackets/bolts following a no start at a client's address (nothing else to do), I got a few thousand miles more of starting power before finally ditching the standard battery.
The new one is a Transit sized version that 'just' fits in the same plastic sleeve, (but only just) and together the changes mean no issues in any weather conditions.