froggy8 Posted November 3, 2014 Author Share Posted November 3, 2014 cheers mate, how much do you charge to sort this problem as i can always go to bolton( if that is where you are) to try rectify this Quote Link to comment Share on other sites More sharing options...
TMaxxDave Posted November 3, 2014 Share Posted November 3, 2014 Yeah im in Bolton. Hoping to sort this over here to save you traveling. Is the fuel pump cutting out in the tank when its warm? Quote Link to comment Share on other sites More sharing options...
froggy8 Posted November 3, 2014 Author Share Posted November 3, 2014 im not 100 % sure what it is doing, all i know is that once my engine gets up to temp then if i switch the ignition off and i try start it again it wont. Quote Link to comment Share on other sites More sharing options...
toddfg Posted November 3, 2014 Share Posted November 3, 2014 Change the crank sensor Quote Link to comment Share on other sites More sharing options...
TMaxxDave Posted November 3, 2014 Share Posted November 3, 2014 What would be the basis for changing the crank sensor? Quote Link to comment Share on other sites More sharing options...
toddfg Posted November 3, 2014 Share Posted November 3, 2014 Not starting when it's hot, fuel pump malfunction could be a historic code. Quote Link to comment Share on other sites More sharing options...
TMaxxDave Posted November 3, 2014 Share Posted November 3, 2014 Very true. But why would it be the crank sensor? Usually when that fails it puts it into limp home mode. Unless im mistaken? Quote Link to comment Share on other sites More sharing options...
toddfg Posted November 3, 2014 Share Posted November 3, 2014 Won't allow the car to start once it's hot, as soon as it cools down it will allow the car to start Quote Link to comment Share on other sites More sharing options...
PurcyP Posted November 3, 2014 Share Posted November 3, 2014 What would be the basis for changing the crank sensor? He has a point first port of call with a bad crank sensor is the engine wont fire up when warm. Quote Link to comment Share on other sites More sharing options...
TMaxxDave Posted November 3, 2014 Share Posted November 3, 2014 I've never heard of this before. 1st time for everything though Sent from my iPad Air using Tapatalk Quote Link to comment Share on other sites More sharing options...
Trans4Mation Posted November 3, 2014 Share Posted November 3, 2014 That's why I said crank sensor 1st point to check these had issues of it yrs ago from cold fine but when hot it's as if crank sensor moves an stops the pickup . Quote Link to comment Share on other sites More sharing options...
PurcyP Posted November 3, 2014 Share Posted November 3, 2014 I've never heard of this before. 1st time for everything though Sent from my iPad Air using Tapatalk I wouldnt be shocked if thats what is causing the issue with the OP's car as well Quote Link to comment Share on other sites More sharing options...
neil.b Posted November 3, 2014 Share Posted November 3, 2014 It will 100% be the ECU. Vauxhall in their infinite wisdom decided to mount it directly to the engine, so all the heat/vibration eventually takes its toll. I have seen plenty of Astra's/Corsa's with the same fault, and many more with other ECU faults. There is a work around where you wire a relay and an inertia fuel shut off switch in to switch on the fuel pump when the ignition is on. Quote Link to comment Share on other sites More sharing options...
toddfg Posted November 4, 2014 Share Posted November 4, 2014 Ecu 400 plus crank sensor around 60 I know what I would be doing Quote Link to comment Share on other sites More sharing options...
neil.b Posted November 4, 2014 Share Posted November 4, 2014 And I know what I would be doing. And It wouldn't be replacing either. There is a very simple check you can perform at the fuel pump relay to check if the ECU is commanding the fuel pump to run. It switches the earth side of the control circuit to energize the relay. And BTW I am not an armchair mechanic, I do this for a living. You can heed my free advice if you like, or you can start replacing things you don't need to replace, its up to you. Quote Link to comment Share on other sites More sharing options...
toddfg Posted November 4, 2014 Share Posted November 4, 2014 And I know what I would be doing. And It wouldn't be replacing either. There is a very simple check you can perform at the fuel pump relay to check if the ECU is commanding the fuel pump to run. It switches the earth side of the control circuit to energize the relay. And BTW I am not an armchair mechanic, I do this for a living. You can heed my free advice if you like, or you can start replacing things you don't need to replace, its up to you. I'm also a mechanic thanks maybe you should get back to your armchair Quote Link to comment Share on other sites More sharing options...
neil.b Posted November 4, 2014 Share Posted November 4, 2014 I would normally suggest a possible crank sensor fault with these symptoms. In this instance though, from my own experience I can tell you that the crank sensor won't be at fault. If there was a crank sensor issue then there would be a fault code to go with it. I have first hand experience diagnosing and repairing this exact fault on numerous occasions. Does the ECU set the "P0230 Fuel pump primary circuit malfunction" code by any chance? Quote Link to comment Share on other sites More sharing options...
TMaxxDave Posted December 1, 2014 Share Posted December 1, 2014 Get this sorted mate? Sent from my GT-I9300 using Tapatalk Quote Link to comment Share on other sites More sharing options...
froggy8 Posted December 1, 2014 Author Share Posted December 1, 2014 yes mate, it was the ecu heating up and something about the voltage was not high enough to run the fuel pump or something like that Quote Link to comment Share on other sites More sharing options...
TMaxxDave Posted December 1, 2014 Share Posted December 1, 2014 Happy days, glad it's sorted Sent from my iPad Air using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
froggy8 Posted December 1, 2014 Author Share Posted December 1, 2014 i remember when i was doing a service on it and while i left it on idle so i could do an engine flush, i thought it ran out of petrol lol Quote Link to comment Share on other sites More sharing options...
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