Engine tursn off at stop lights

bulb failure warning relay has failed.behind your front ashtray last relay on the left .round one change it try on ebay.

check your codes first as it can be a number of things.

It looks easy for the 940 but I am not sure about the 940 turbo, as maybe some of the turbo parts are in the way. I'm not sure about that, since there is no documentation on the turbo model vs. the 940 standard model. If you can follow the following instructions, then I would give it a whirl.

REMOVAL & INSTALLATION - 1993 Volvo 940

1. Disconnect the negative battery cable at the battery.
2. Disconnect the leads from the starter motor.
3. Remove the starter motor retaining bolts.
4. Remove the starter motor from the vehicle. To install:
   
5. Position the starter motor to the flywheel housing.
6. Apply locking compound to the bolt threads and install the retaining bolts finger-tight.
7. Tighten the bolts to approximately 25 ft. lbs. (34 Nm).
8. Connect the starter motor leads and the negative battery cable. Fig. 1: Unfasten the nut retaining the starter cables . . .
   Fig. 2: . . . and remove the starter cables
   Fig. 3: Unfasten the starter retaining bolts . . .
   Fig. 4: . . . and remove the starter from the engine
   

Hi,

The engine light comes on mostly when you have bad gas tank cup,or you don't tight enough the gasoline.Go to any auto-zone and request the obd scanner,at no charge just leave your driver license or credit card,connect the scanner follow the instructions.They will check up and the check engine light will come off in the next 3 to 5 days.

Thank you !!

Turbo or non turbo engines are 2.3 liter.

the BOO switch, (Brake On Off) located on or near the brake pedal

Volvo Code Retrieval Accessing Trouble Codes 89-93 models (and later non-turbo/non-OBDII models)

Fuel Codes Locate the diagnostic unit behind left strut tower and remove its cover.(see image) Connect selector cable to socket #2,which tests the fuel codes. Turn the ignition switch to the ON position(engine not running). Enter the diagnostic mode by pressing the push button on the diagnostic unit for at least 1 second, but not more than 3 seconds. The red LED light will start to flash,count the number of flashes in 3 flash intervals. The flashes will be seperated by 3 second intervals.Make note of all codes. If no codes are stored,the LED will flash 1-1-1,which means the fuel system is operating correctly.


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Ignition Codes To access the ignition codes,follow the above procedure,but with the selector cable connected to the #6 socket on the diagnostic unit.
NOTE:Turbocharged models may have seperate codes for the turbo system and are accessse by hooking the selector cable to the #5 socket.

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check the large relay in the fuse box and push it down it works a number things

Have you checked compression on non firing cylinders? Likely has blown head gasket between these two cylinders if located side by side.

on the engine drivers side below the air intake/below the brake fluid reservoir/ follow the large red batery cable