Hello, The Car started stalling when I would leave a green light. It would happen about once a month. It ran pretty good the rest of the time. This week when motor warms up and I turn it off it wont start. I wait about 5 minutes and it starts. What do you think the problem could be? Thanks, Ken

check timing, adjust valve clearance, check vacuum leaks. these are some that need attention.

Sounds like your crankshaft sensor is bad. It will stop working if bad and will leave you stranded. GOod luck.

run fault codes and find which sensor is causing the problem. It is a good idea to heed the engine light immediately as it is there to advise you of something wrong that will cause damage to the engine or transmission

Hello Scott,

Thanks So Much, for contacting me. I believe,, based on your symptoms, that you have a bad 02 sensor relating to your emissions, which is happening by your Cadillac convertor. I would have auto zone or place like that in your home town confirm this. They can check with there hand help diagnostic computer to check to make sure it is the one i feel is out. Once they have, it will cost about 80 bucks and problem solved. Engine light will be off and of course car will not stall at stop lights anymore. Based on the year of car, i think that is your problem. If you feel that this makes sense and you can trust I am accurate on the problem, please rate my solution as well as some kind words always appreciated. If you need additional questions, feel free to contact me anytime. I also give a 100% money back guarantee on my solution. Thanks So Much, Mike

actually a pretty easy fix. The pass key computer lost its programming. Put the key in and leave it on with the security light flashing. Just turn off all your accessories and make sure battery is pretty good charge. Anyway after you leave the key on for ten minutes the security light will come on steady so turn key off and right back on and start car. If security light still starts blinking and car stalls then do it again. It will usually work the first time but can take a few times to get it right.

sounds like the distributor needs replaced

Your problems are unrelated to the stalling. I suspect you may have an air leak in one of the intake hoses. Look around the LH (gearbox side of the engine) for loose pipes. There are a myriad of (small)vacuum hoses which tend to disconnect themselves.

It stalls and has no power since there is not fuel. It could be : 1- Fuel filter is clogged up. 2- Injectors are clogged up. 3- Throttle body gummed up. Do # 1 first if it doesn't improve the situation, then follow these items:
A- Check the injector module if it is working by Plug in NO ID at each injector electrical plug to see if they are lighted up during the cranking. - If there are lights flashing up at these injectors then Injector Module is good. - If there isn't light flashing then the injector Module needs to be replaced.
B- If the injector Module is good, proceed to C.
C- Break the connection from the gas line to the fuel Distributor and start the engine to make sure gas is delivered to the fuel distributor before proceeding to D D- Check out # 2 by removing Injector from cylinder #1 leaving the electrical plug in, with a bottle or Ziplock bag to catch the fuel then have a helper to start the engine to see if fuel coming out of the injector. If there isn't then the injector is bad. Replace a bad injector. You can repeat this method for the rest, or just replace all injectors as I would suggested as the car age.
After this, it should be running well and sometimes having stalled then the time to clean the throttle body. Good luck.

This might sound dumb but you are looking for anything, How about a clogged converter. Why not try unbolting the exhaust pipes and try it. If you just replaced the engine they should come loose pretty easy.

Get the water pump checked.