The problem is with a 1990 760 ti., B230FT. The car will not start after a short stop in the video store, 7-11, etc. It takes 10 or 15 minutes of waiting,sometimes more, before it will start again. I don't know if it is a fuel problem or a spark problem. It happens intermittently. As if hotsoak of some component is taking place. Does anyone have an idea as to what is going wrong? Rest fuel pressure, no spark, I don't know. Any ideas will help.

You have a variety of answers to your post, they are all quesses. Why not diagnose the problem before trying to "fix" anything. The place to start is find out if it spark or fuel related. Check for spark when you have the no start and go from there.
Have you checked for fault codes from the computer?


I think a session

Hi Peter,

My heart goes out to you for you are suffering from the same problem as I. Here is a quick fix. Keep a long stick in your car's luggage area. A baseball bat may be just fine. The next time the car does this to you, open the hood, get the stick out and give a good few whacks on the engine and I guarantee you the car will start. If anybody ask what in the world you are doing, just say you got a snake in your engine compartment......

Just joking... SERIOUSLY, my 1991 940GLE has the same problem like yours. I have located the fault and I think it may help you as well. I am not sure what you meant by the car won't start. But I am going to assume that you mean nothing happens when you turn the key to start position, not even the starter motor works.

At first I did exactly what you are doing. Sit it out, wait for the engine to cool down and start the car but mine would take about 20 minutes or so. Then I found out that the problem is the starter solenoid and not the fuel relay. I checked the fuel relay but no problem there. So whenever, my car does not start I would take the spanner and give a few gentle tabs on the solenoid and starter and the car would instantly start at a single attempt.

So the next time your car does not start, try the method above and if your car starts .... you have located the problem. As for me, I am quite happy with whacking the solenoid for the time being. But whacking the solenoid is not a long term solution. Repairing it or changing it is far better solution.

Happy whacking!


velan
kuala lumpur, malaysia.

The starter has been replaced. It does crank when its hot and has been parked for 5 to 10 minutes. Just replaced the green fuel pump relay in the dash today. The coil checks out OK. I'll try a temp sensor if the problem continues.

Also next time this happens (no start when hot), touch the ignition coil
and check if it's hot..If it is, it will need replacement.Happened to me
a few years back..Goog Luck..
--
ReySC..'86 744 GLE ..'94 944 T http://communities.msn.com/Reysc/reyscarfriendshobbies.msnw?action=ShowPhoto&PhotoID=19

A bad temp sensor will cause the same symptoms. Dont forget to check it.

Lawrence

Had a similar problem myself - check the fuel pump relay. Next time it won't start, remove the ashtray, reach in and wiggle the relay a bit. If it starts you know your problem is the relay. If not...good luck!

Very common problem on 7xx series of cars.
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