deano46 10 Posted July 20, 2015 I have had my car off the road for a whole year whilst paying for wedding. Trying to get it running again. Before I SORN the car last year it's had a starting problem that has gradually got worse. It starts 1st time when the car is cold, ticks over nicely, if I shut it off once it's warm it won't start again. It doesn't try to start or crank over, but it does make a loud squeeky/whiring sound even when the dash lights are on but not cranking. It's had a new starter and the battery and alternator are good. My 1st thoughts were to just get it to a garage, but is there anything simple I'm missing? All suggestions welcome before I get charged a fortune to fault find and run diagnostic checks on VAGCOM, or worse begin replacing parts aimlessly hoping to fix this and get her back on the road. Quote Share this post Link to post Share on other sites
deano46 10 Posted July 20, 2015 Whiring sound is coming from engine bay and my mates suggested it sounded like a dolphin being murdered. Quote Share this post Link to post Share on other sites
Jim Bowen 1 Posted July 20, 2015 Screeching could be the aux water pump. Mine made a weird noise but I've not been present during a dolphin bashing for a long time so can't compare. Quote Share this post Link to post Share on other sites
deano46 10 Posted July 20, 2015 That was my thought. Would this stop it starting when warm? Quote Share this post Link to post Share on other sites
Jim 2 Posted July 20, 2015 Nope. The aux water pump is not driven off a belt or anything similar - it just sits in line in the cooling system and is an electric motor. Have you been able to work out which side of the engine the noise is coming from? Quote Share this post Link to post Share on other sites
deano46 10 Posted July 20, 2015 Near side/passenger side I think. Quote Share this post Link to post Share on other sites
easypops 8 Posted July 20, 2015 Is there an ecco? :lol: Quote Share this post Link to post Share on other sites
robrado974 1 Posted July 21, 2015 Mine did this . I replaced the blue temp sender , the one that tells the ECU , what to do . Mine was registering 37d all the time . Quote Share this post Link to post Share on other sites
deano46 10 Posted July 21, 2015 Where is this located and is it an easy fix? Quote Share this post Link to post Share on other sites
robrado974 1 Posted July 21, 2015 Easy fix mate . There are three in the thermostat housing , on the block , right hand side when you are looking at the bay . Best to replace all three while your at it . Quote Share this post Link to post Share on other sites
deano46 10 Posted July 21, 2015 Great. Can I get them from vw heritage? Quote Share this post Link to post Share on other sites
Jim 2 Posted July 21, 2015 Be surprised if they're not all still available from a main VW dealer / TPS :) Quote Share this post Link to post Share on other sites
deano46 10 Posted July 21, 2015 Thanks I'll check it out and see if that fixes it. Quote Share this post Link to post Share on other sites
deano46 10 Posted July 21, 2015 Thanks for the help. Quote Share this post Link to post Share on other sites
robrado974 1 Posted July 21, 2015 Yep still available from TPS . Make sure the old rubber 'o' rings come out with the senders . I left one in by mistake , when the car was up to tempreture it blew it out of the block . New rings and plastic circlips should come with it . Quote Share this post Link to post Share on other sites
deano46 10 Posted July 21, 2015 Would u buy just the 3 senders or the thermostat and the housing too? Quote Share this post Link to post Share on other sites
robrado974 1 Posted July 21, 2015 Yep , while your at it , stick a new stat in . Also the rad sender that sits in the rad . When I said housing I meant underneath the plastic cover , where the senders are found . Quote Share this post Link to post Share on other sites
deano46 10 Posted July 21, 2015 Cool I'll get a list together and get all the bits. Quote Share this post Link to post Share on other sites
deano46 10 Posted July 22, 2015 Started the car again tonight before I get the bits ordered and have a look again. The loud whiring noise is definitely coming from the auxiliary water pump. Would a faulty pump effect starting when warm? Quote Share this post Link to post Share on other sites
Jim Bowen 1 Posted July 22, 2015 Nah. Shouldn't do. Probably just a coincidence. Quote Share this post Link to post Share on other sites
robrado974 1 Posted July 22, 2015 This pump assists the main pump . I doubt if this would cause your problem . I feel your pain , intermitant problems are hard to find , I know ! . Quote Share this post Link to post Share on other sites
Jim Bowen 1 Posted July 22, 2015 I had a hot start problem and it went away after changing the fuel pump relay. Quote Share this post Link to post Share on other sites
deano46 10 Posted July 22, 2015 Another item I will add to the list then. Great. Quote Share this post Link to post Share on other sites
1xshaunx1 27 Posted July 22, 2015 Just curious, if you don't turn it off when it's warm, does the temperature go up and the fans kick in. Then when the fans turn themselves off, if you turn your engine off then you should have the auxiliary pump kick in for a minute or so. If all the above works it's something else, temp senders/ broken wire etc to ecu, maybe. Quote Share this post Link to post Share on other sites
