LeSabre 97 starts, idles 2 seconds stalls.

•. NEW. MAF, IAC, TPS, upstream O2 sensor, fuel filter

•. Downstream O2 has been cleaned

•. Fuel pressure T rail 47

was running, drove Cross the street. Changed serpentine belt. Now it starts right up, idles 2 seconds then stalls. Can’t get it to run unless I keep flow of starting fluid through throttle body.

HELP. Requested and appreciated

Always fun changing the serpentine belt one one of these!

Were all those parts replaced because they were confirmed bad?

Fuel pressure should be 48-55PSI.

I bet the fuel pump is bad or very marginal. Do you know the history of it?

How full is the fuel tank?

What'* the theft light doing?

the icm runs the ignition till it’* enough rpm, this is the failure mode where you aren’t having spark control from the pcm potentially. If you remove power to the ecm do you still get the same situation

it may also be pass lock (passkey Ii)