Ok I bought my 89' 240 a couple months back and haven't had any real serious problems. Now this one pops up and I'm completley clueless. When I start the when it's cold it starts right up with no hesitation. But when I turn the car off when the engine is warmed up and try to start the car again it won't start. It will try to crank, but to no avail.I have no clue what is wrong. I just bought a new battery, had both the altenator and the starter tested, and they both tested fine. Any help would be appreciated.

 

Start with Vapor Locking.. Remove the Fuel Cap and start cold, then shut off after warmup and try starting again. If it does, then install new fuel filter and new Cap.
If you still have problem. check to make sure your MAF and Throttle body Sensors are on tight. Popoff the Battery Cable and leave off. Reseat the Sensor plugs by disconnecting and reconnecting. Then after a couple hrs, reconnect the battery. This will reset the ECU and go thru a quick test state within the system once the car is started.
Just some fast and friendly advice.

 

Thanx for the info, i'll go give it a try.

 

Yeah thats a Hot Start issue that the ECU is having problems with. Your crank enrichment values seem to have the issues in hot start. Try resetting the ECU Spec240sx said and see if that helps.