andy2986 Posted December 31, 2010 Share Posted December 31, 2010 Hi all, Got a fault developed on the disco recently. When cold the engine starts fine (on petrol) and ticks over. It will drive away ok (still on petrol) but as soon as you accelerate hard or give it a heavy throttle the engine bogs down. (all still on petrol) As soon as the engine starts getting warm (5-10 mins) its fine and revs freely and pulls well at any throttle. Is there a temp sensor that would cause this ? (thats my gut feeling) The engine is a 97 3.9 serpentine megajolt Single point LPG If I let it tick over and warm up before I drive off its fine (5 mins) but I sometimes work really odd hours and my exhaust is a bit fruity I love the sound but I can see it wearing thin with the folks next door at 4 in the morning :rolleyes: Any ideas or pointers gratefully received Andy Quote Link to comment Share on other sites More sharing options...
monkeyb0y Posted December 31, 2010 Share Posted December 31, 2010 Maf?...sounds to me.. Quote Link to comment Share on other sites More sharing options...
andy2986 Posted January 1, 2011 Author Share Posted January 1, 2011 Thanks for the reply, I didn't think that the MAF was controlled by temp though? I might have a spare in the lock up will swap it out and see all the same. Have to say I felt sure it was a temp sensor thing affecting the mixture richness or fuel delivery in some way, will go through the haynes one more time !!! Andy Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 3, 2011 Share Posted January 3, 2011 MAF has the air temp sensor in it. Coolant temp sensor would be the other one. Quote Link to comment Share on other sites More sharing options...
jamesmartin Posted January 4, 2011 Share Posted January 4, 2011 on front of inlet manifold on right as looking from front they do fail often Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 5, 2011 Share Posted January 5, 2011 Make sure you get the engine management coolant sensor not the dashboard gauge one. The EFI one is circled green in the picture, the gauge one is red: Quote Link to comment Share on other sites More sharing options...
andy2986 Posted January 5, 2011 Author Share Posted January 5, 2011 Brilliant ! Thanks guys will order one up today. Andy Quote Link to comment Share on other sites More sharing options...
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