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Car Forum / Jaguar Cars / February 2006Help! My 91" xjs won't start. tia
Hi, I have a 91' xjs 12 cyl that cranks and cranks but won't start. The fuel pump is working and getting juice but there's no spark at the other end. I've cleaned off corrsion at the wire that go to the starting coil which worked for a while but now it's back and less fixable it seems. There is also a slow drain on the battery (maybe from an improperly removed alarm?) that I haven't traced down yet. I'm not sure if there is any relationship. Does any of this ring a bell? The enging cranks but gets no spark. Any help would be greatly appreciated. Thanks, Charlie Check out the crankshaft position sensor. If this goes, it'll crank and crank but will never start. > Hi, > I have a 91' xjs 12 cyl that cranks and cranks but won't start. The fuel [quoted text clipped - 7 lines] > Thanks, > Charlie THanks for the info. It was the crank shaft position sensor. It had a corroded plug. That was pretty astute trouble shooting from afar and I appreciate your response. Thanks, Charlie > Check out the crankshaft position sensor. If this goes, it'll crank and > crank but will never start. [quoted text clipped - 11 lines] > > Thanks, > > Charlie it seems like a drain somewhere it dont take much to jump it Chuck, This is my first time reading/posting to this group - I'm usually farting around on ramva - old vw's. I've just returned to Toronto (cold) after 23 years in the orient. My brother's just loaned me his old 1990 XJ6, and I seem to have the same "crank & crank & crank & no start" problem. It ran fine last week, had a coupla slow starts one day and fired up perfectly afterward each time, but after that, and now, won't start at all. I'm not used to working on such modern - hahaha - cars. I'm an excellent mechanic, but have no experience on injectors/computerized engines, etc. although I do a lot of work on PC's and real time instrument interfaces to them. I read the manual and the XJ6 has a similar crankshaft sensor, and there does not seem to be an ECU failure code available for it. I suppose it's located at the front - what - half way up the RHS of the - what's that coggy wheel in the diagram - a timing drive pulley? I'll check it in the morning. What's the easy/safe way to check for fuel available at the injectors? Can I just stick a spare plug on a wire to see if there's a spark, as I usually do? Thanks for any advice - I'll be a Jaguar mechanic by the weekend. - Tom ========================= >Check out the crankshaft position sensor. If this goes, it'll crank and >crank but will never start. [quoted text clipped - 11 lines] >> Thanks, >> Charlie THanks for the info. I don't know much about working on these cars but I do know that you can check for a spark the old fashioned way as you mentioned. I"m not sure about fuel available exept to listent to the fuel pump ( in the trunk on my car) or listening near the engine, you can hear the fuel flowing. Don't know if that helps...... On my car, the connector to the crank angle sensor was dirty and a little corroded, so I think that was the problem. It's been starting fine but I haven't run it in about a week. If it starts stopping again, and I'm getting juice up to that connector point, I'll assume the sensors wrong, I guess. Hope some of this helps. regards, charlie > Chuck, > [quoted text clipped - 48 lines] > >> Thanks, > >> Charlie Chuck, My mistake - it's actually a 1990 Sovereign. Is there much of a difference, other than the spelling? Checked the spark - it's okay. Ran it for a few seconds on the quickstart spray can stuff, so I know it works, but it wouldn't run on it's own. We're charging the battery back up overnight, and I will throw some gas conditioner (methanol?) in the tank. when the battery's good I'll see if the gas is there at the fuel rail, and if not check the pump. If I could get the car inside overnight somewhere it'd probably start and run okay - darn cold weather! I've located the fuel pump - underside of vehicle under the rear left seat - but I have no idea where that crank position sensor is. I've looked everywhere that I can see from below under the front of the engine. Can you tell me where/how to find it? I don't think I need to touch it this time, but maybe next time . . . ? My brother says he's going to keep this thing till it dies, so I better get a manual for it. Any recommendations? Thanks, - Tom ============= >> This is my first time reading/posting to this group - I'm usually >> farting around on ramva - old vw's. [quoted text clipped - 30 lines] >> >> =========================
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