Hello everyone, I have a 1991 3.1l v6 firebird that doesn’t like to idle when it starts to get around 160 degrees. I am looking for any help on what this may be.
I have replaced the following:
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•TPS
•IAC
•Coolant temp sensor
•MAP sensor
•Thermostat
•Ohms on all injectors read 12.4-12.8
•Fuel pressure regulator
•Entire fuel rail
•Starter
•Knock sensor
•Spark plugs
•Spark plug wires
•Timing chain and gears
•ICM
•Wiring harness for injectors
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We have also tested it with a timing light and that is good. We bought the car not running. The fuel pump doesn’t work, so we installed a temporary inline fuel pump under the hood. I believe it is rated 50-60 psi. Any help is appreciated. Thanks!

 

were the injectors tested when they are hot?

 

Southbay: No they weren’t, I have read that they drop in ohms when hot though. The injectors are new so I find it unlikely but I can try it if needed.

 

That's correct. Sorry thought they were stock