I was driving on the interstate when my SL completely shut off. I replaced the injector, fuel filter, have perfect pressure to the rail, tested crank sensor and spark and they are all working fine. When i turn the key it cranks and cranks, if i floor it it will start for a second then die. I am at a dead end now, please help

 

is there a security light ?

 

You didn't say anything about the fuel pump. I'd rent a pressure tester from one of the local parts stores and check the pressure on it. Could be you've got either a bad fuel pressure regulator or fuel pump. Have you tried it with starting fluid?

 

Can hear the fuel pump run as it should. the fuel pressure at the port is perfect, tried spraying starting fluid didnt work. no security light

 

Sound like it may have jumped time.

 

The engine coolant temp sensor ( ECTS ) may have failed. Get an OEM replacement from local GM dealer, along with replacement electrical pigtail. Total cost about $50usd.

If you wish, disconnect connector on the ECTS first, and measure the resistance. Should be between 1000 and 5000 ohms. If not, replace it.

 

Ect is new as of two months...tested to be sure and is range. Fuel injector isspraying, it is the tbi model. Pulled throttle body cleaned it and the iac port. Starts on first click for a second then dies....after that its slow cranking till it builds up a pool of fuel seems like. Getting a timing light to see next. Also tested the tps and it is in range but i have a 22 code which is tps low circuit input. Circuit voltage for tps reads 4.98 specs from all data say 5v. Injector circuit tests at 11.98 specs from all data say 12v.

 

If anyone has any info on where timing check marks are and if i need to what are the timing marks for setting it. its the 1.9 vin 9 tbi ohc

 

compression is perfect......going on to test pcm

 

have power everywhere to all fuses and tested pcm plugs, all perfect voltage. took pcm apart and inspected circuit board. under the power port there is a 1inch by 1 inch square that looks like solder, on one end of that square looks like the solder heated up and collected to a bubble, upon further inspection all solder joints looked ok. on the top side of the board where all the processors? are i notice browning, its like the color of used oil a light brown almost burnt. i am not sure but does this mean i had a short and my mother board fried??? my neighbor is a computer geek but isnt home otherwise id pick his brain