Engine cuts out

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Engine cuts out

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Chevrolet Forums >> Chevy Trucks, Vans & SUV's >> Silverado >> Engine cuts out

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Engine cuts out - 1/13/2008 6:19:41 PM

Grr Rawr

Posts: 13
Joined: 1/7/2008
Status: offline

I have a 95 silverado with a 305 tbi with 189,500 miles on it. I've recently replaced plugs, wires, cap, rotor, fuel filter, and the injector peice right above the injectors on the top of the throttle body. Once she gets warm, she starts to spit and sputer and decides to cut out half the time. I'm thinking a sensor is shot but wondering which one it could be? I'm thinkin map sensor or o2 sensor. Any ideas?

Post #: 1

RE: Engine cuts out - 1/14/2008 4:29:55 AM

tedinindy

Posts: 4
Joined: 1/13/2008
Status: offline

Does this happen only randomly or is it constant once warmed up?

(in reply to Grr Rawr)

Post #: 2

RE: Engine cuts out - 1/14/2008 7:19:29 AM

Grr Rawr

Posts: 13
Joined: 1/7/2008
Status: offline

Pretty much garunteed after about 5-10 minutes of ideling, otherwise when it quits doin it goin down the road, she still flys...

(in reply to tedinindy)

Post #: 3

RE: Engine cuts out - 1/14/2008 8:09:24 AM

golfer

Posts: 610
Joined: 10/8/2006
Status: offline

First thing you might check is the fuel system ... the fuel pump and regulator for correct pressure.

Injector may be partially plugged causing a stream instead of a mist ... clean injector might help.

Check and clean the engine grounds.

There may be a leaking canister purge solenoid.

Change the PCV valve.

There may be a lean mixture from a vacum leak at the intake manifold. Sometimes if you remove the PCV valve and add a little propane inside the valve cover .... if the engine smooths out then suspect an intake gasket leak.

Check the signal output of the throttle position sensor and the engine coolant temperature sensor.

Check the EGR system.

(in reply to Grr Rawr)

Post #: 4