'94 XJ 6- starting problems
#1
11-04-2007, 08:59 AM
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'94 XJ 6- starting problems
I mean I have one, I'm not trying to start one- a problem that is.
I have a '94 XJ-6; its new to me. About half of the time, I touch the key andthe car fires up. The other half of the time, it won't start, or only does so after many, many attempts. However, whenever I put a battery charger boost to it, the car fires right up (I have a new spec battery and the alternator checks out as good).
Once the car starts, it is quiet, smooth,and does not hesitate-it purrs like the cat it is .
Also, it stops running when it is at half a tank. The guage says half tank and that is all the gas it will take.
Related problems? Separate? Any suggestions?
Thanks.
I have a '94 XJ-6; its new to me. About half of the time, I touch the key andthe car fires up. The other half of the time, it won't start, or only does so after many, many attempts. However, whenever I put a battery charger boost to it, the car fires right up (I have a new spec battery and the alternator checks out as good).
Once the car starts, it is quiet, smooth,and does not hesitate-it purrs like the cat it is .
Also, it stops running when it is at half a tank. The guage says half tank and that is all the gas it will take.
Related problems? Separate? Any suggestions?
Thanks.
#2
11-04-2007, 10:17 PM
RE: '94 XJ 6- starting problems
On the starting problem, there almost has to be a bad cable connection. Check your positive and negative cable connections at the battery and make sure they are clean and bright. If you can start the engine with a booster/charger, you must not be getting full current from the battery. You also might want to check the connection at the starter. The only other thing I can think of is a weak starter as the problem.
Don't really know what your gas problem is, but I don't believe it is related to the starting problem....Doug
Don't really know what your gas problem is, but I don't believe it is related to the starting problem....Doug
#3
11-05-2007, 11:05 AM
RE: '94 XJ 6- starting problems
I would need some more info on the problems to help out.
Starting Problem
When you try to start the car and it gives you problems, does it sound like a dead or dying battery while cranking or does it crank strong and just not turn over?
When it is cranking and not starting, are you getting anything at all (like it starts to turn over but then goes back to a crank)? Or is it just constant cranking with no results at all?
When you are having this problem, is the tank at helf level - or does it happen all the time?
Fuel Problem
Are you absolutely sure that your gas guage isn't broken?
Does the car buck under heavy accelleration when you are nearing the 1/2 fuel mark?
Does it die all together, or does it sometimes start?
If you can answer those questions, I'll have a better idea on what it may be. Right now I am thinking;
Starting Problem
Dying alternator. Even though the alternator may test out well, it could still be bad. Have the shop test it under load and see if that makes a difference. This is probably your issue. Either that, or a dead battery - but you said that your battery is new. It could also be a loose battery cable as was mentioned above - so check that first. Even if the cable is on there tight, take it off and wire-brush the terminal, then replace. Maybe it just doesn't have a good contact.
Fuel Problem
Fuel pump. Running good at a full tank and poorly at lower levels is a sign of a dying fuel pump. This is really easy to diagnose. Just hook up a fuel pressure guage to the schraeder valve on the fuel rail. If it reads low, then you need to replace the pump. It may also be the filter, but I don't think so.
Starting Problem
When you try to start the car and it gives you problems, does it sound like a dead or dying battery while cranking or does it crank strong and just not turn over?
When it is cranking and not starting, are you getting anything at all (like it starts to turn over but then goes back to a crank)? Or is it just constant cranking with no results at all?
When you are having this problem, is the tank at helf level - or does it happen all the time?
Fuel Problem
Are you absolutely sure that your gas guage isn't broken?
Does the car buck under heavy accelleration when you are nearing the 1/2 fuel mark?
Does it die all together, or does it sometimes start?
If you can answer those questions, I'll have a better idea on what it may be. Right now I am thinking;
Starting Problem
Dying alternator. Even though the alternator may test out well, it could still be bad. Have the shop test it under load and see if that makes a difference. This is probably your issue. Either that, or a dead battery - but you said that your battery is new. It could also be a loose battery cable as was mentioned above - so check that first. Even if the cable is on there tight, take it off and wire-brush the terminal, then replace. Maybe it just doesn't have a good contact.
Fuel Problem
Fuel pump. Running good at a full tank and poorly at lower levels is a sign of a dying fuel pump. This is really easy to diagnose. Just hook up a fuel pressure guage to the schraeder valve on the fuel rail. If it reads low, then you need to replace the pump. It may also be the filter, but I don't think so.
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