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Car wont start when warm

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cyberneo344ib

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I'm thinking its one of the sensors when it warms up. It starts fine when its cold, then warms up and dies. Also if I keep revs up to like 2000 it wont die when warm, but if I let them go down to 1000 or below it putters and dies. Any suggestions?
 
Good question......it would appear that you are running too rich, fine on a cold engine but not so good warm. Keeping the throttle open allows more air to enter the mixture thus leaning it out. Check the obvious first, is the air cleaner clean or is it clogged up? Is your gas skunky or is it reasonably fresh? You don't indicate the type of Jaguar, but since you mentioned a sensor, it probably has fuel injection?
 
Yeah, sorry I didnt tell you what kind of car. Its a 86 xj6. I'll give you the whole story so you know where i'm coming from. This car is my friends car and he had it stored for two years. Anyways, changed the oil, filter, and air filter, spark plugs, and new batter. Fired it up and it was running well. filled up the tires and drove it to my house. Then my friend decided to power wash the engine and car. Once I got home, turned it over and it started doing what I described. There is no water in the engine, and I'm not too sure about that gas. I was going to check the tanks and see if there is junk in them. I still think its a sensor because once it warms up then it dies, up until that point its fine.
 
Check under the distributor cap. I *think* that the 86 uses some form of an OPUS system so you may have water in there somewhere. My first thought though was the ignition module, but I havn't seen a Jag in so long I couldn't tell you if it has one or not.
 
Because of the circumstances of failure after pressure washing, I would first check under the distrubutor cap for moisture. When the car warms up the moisture turns to steam and condenses on the distributor cap causisng ignition malfunctions. Then check the coolant temperature sensor for fuel injection ECU for out of calibration at normal operation range. I think the senor resistance should be about 3K ohms at normal operation temperatures. The Jaguar series 3 has a very reliable HEI system, not an OPUS. The ignition amp on the front of the intake manifold or the ignition coil are high temperature sensitive and can fail when hot. Let me know what happens and I can offer more advise. Best regards, Jack. /ubbthreads/images/graemlins/patriot.gif /ubbthreads/images/graemlins/england.gif
 
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