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19th May 2011, 01:17 | #1 |
Posted a thing or two
2002 R75 Conn SE 2.5l Auto Tourer, 2001 R75 Conn SE 2.5 Auto Saloon Join Date: Nov 2006
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KV6 2.5 Auto 'Warm' Start problem.
Occasional problem with warm start after short journey from cold.
Car cold (not used for at least 6 hours) Start. Tickover about 1000rpm settling to about 700rpm after 200 yards or so. Drive level road about 2/3 mile then mostly downhill for another 2/3 mile. Park. Temp gauge just reaching 9 o'clock so say temp about 75c. Leave for about 5 mins and attempt restart. Engine spins quickly enough but no start. No unexpected warning lights. Leave for another 5 minutes, try again. Starts fine. Happened for last three days. Any suggestions welcomed ? Further info. 1/ Fuel filter screwed tight and orange clip fitted about two years ago. Not checked since. 2/ When engine fully up to working temp no problem with hot starts. |
19th May 2011, 06:35 | #2 |
This is my second home
MG ZT260 SE, MG ZT190+, MG ZTT 160, R75 Conn SE 2.0, R75 Conn SE 2.5 X 3, R75 Club SE 1.8, P5B Coupe Join Date: Jul 2009
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Diagnostic test would be your best route to be sure but Camshaft Sensor can have that effect & they do fail mainly when warm. Leaving it to cool for a while makes it good again temporarily.
I would get it tested though because guessing could work out expensive. |
19th May 2011, 07:09 | #3 |
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Rover 74 club Join Date: Mar 2010
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I had this with my 75 v6, picked up a cam sensor from scrap yard, it didnt fix it. Got an OBD II reader from ebay (£15) and it told me it was the crank sensor. After another trip to the scrappy for a crank sensor all was well.
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20th May 2011, 16:29 | #4 |
Posted a thing or two
2002 R75 Conn SE 2.5l Auto Tourer, 2001 R75 Conn SE 2.5 Auto Saloon Join Date: Nov 2006
Location: Gravesend
Posts: 1,897
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Thanks for the replies.
Will do as suggested and get the car on T4. Just a little puzzled as to why the difficult start only happens on a partially warm engine though. |
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