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6.0l starts sputters dies repeatedly.


heavymetal200p

Question

So I have a 2002 Escalade AWD 6.0l non esv and it's recently been giving me problems.

 

It all started after I put a can of gas in it from the garage but that doesn't necessarily mean it's the culprit.

I'll admit the gas was a month old or more and sitting on the floor in the garage.

 

It started acting up the next day. Wouldn't start right away then when it did it idled rough at 150rpm.

 

Got p0171 and p0174 once the CEL finally clicked on.

 

Later that day it actually died on me while I was doing 100km/h on the highway and it just stopped.

Tossed it in neutral took it onto the shoulder.

 

I put gas line anti freeze in it and a fresh can of gas then did the ol pound on the tank thing. Eventually I got it running and I got it home. I left it idle for 30 minutes or more issue free and drove it around a bit more then parked it over night.

 

Next day halfway to work it started acting up and died. Started again and got me to work.

On the ride home it died again and I had a flashing cell while it sputtered and stopped.

 

This time no re start. It rolls over, fires and sputters 3 or 4 times then dies. It'll do this repeatedly and occasionally sputter longer but won't actually start.

 

I dumped a can of sea foam in it yesterday and even half an hour later no go.

 

Any ideas?

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OK so I plugged the fuel pressure tester into the Schrader valve on the fuel rail.

Tipped the key forward and got no pressure at all. Tried rolling it over and still nothing.

 

I popped the relay out and swapped it with the identical one marked DRL. And still nothing.

 

I don't hear the pump hum in the tank with the key on either.

 

What's next?

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