Help: 1992 Chevy S10 Blazer Intermittant Start Probs

I have a '92 s10 (4.3l CPI) that sometimes will not start, acts like it's out of gas, has fuel pressure and spark. Will then start normally and run good after a few minutes. Sometimes on start, engine will race, and will not
stop raciing until turned off. Have replaced coil, rotor button, ig module, cap, fuel filter, plug wires, map sensor, and fuel pump relay. Short of pushing it off a cliff, any ideas would be greatly appreciated.
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On Sat, 28 May 2005 18:05:02 -0400, sandi bryant wrote:

Idle control motor defective and or passages diry with carbon.
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Help: 1992 Chevy S10 Blazer Intermittant Start Probs Group: alt.autos.gm Date: Sat, May 28, 2005, 6:05pm (CDT+1) From: snipped-for-privacy@appalachiamail.com (sandibryant) I have a '92 s10 (4.3l CPI) that sometimes will not start, acts like it's out of gas, has fuel pressure and spark. Will then start normally and run good after a few minutes. Sometimes on start, engine will race, and will not stop raciing until turned off. Have replaced coil, rotor button, ig module, cap, fuel filter, plug wires, map sensor, and fuel pump relay. Short of pushing it off a cliff, any ideas would be greatly appreciated.
The racing could e your ignition switch sticking...You say it has fuel pressure? How much pressure does it have? Also does it hold pressure? Coud be your pump bleeding down or you could have a bad fuel pressure regulator.....Does it act up mainly when it sits for a long period of time say overnight? S Cook
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sandi bryant wrote: (1992 S10 4.3L CPI Blazer Intermittent Start)
Sometimes will not start, acts like it's out of gas, has fuel pressure and spark. Will then start normally and run good after a few minutes. Sometimes on start, engine will race, and will not stop raciing until turned off. Have replaced coil, rotor button, ig module, cap, fuel filter, plug wires, map sensor, and fuel pump relay. Short of pushing it off a cliff, any ideas would be greatly appreciated. _________________________________________________________
Defective or sticking Idle Air Controller is a likely cause.
Things which may help without buying more parts:
Disconnect and reconnect IAC connector to clean pin corrosion. Remove IAC, clean pintle and seat then reinstall. Push throttle pedal to floor multiple times to clean TPI resistor. Disconnect and reconnect TPI connector to clean pin corrosion. Confirm good vacuum (or electrical) connection to EGR valve. Remove EGR valve, clean pintle and seat then reinstall.
Good luck.
Wendy & John. ______________________________________________________
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Re: Help: 1992 Chevy S10 Blazer Intermittant Start Probs Group: alt.autos.gm Date: Mon, May 30, 2005, 8:46pm (CDT+5) From: snipped-for-privacy@kilobar.net (Wendy&John) sandi bryant wrote: (1992 S10 4.3L CPI Blazer Intermittent Start) Sometimes will not start, acts like it's out of gas, has fuel pressure and spark. Will then start normally and run good after a few minutes. Sometimes on start, engine will race, and will not stop raciing until turned off. Have replaced coil, rotor button, ig module, cap, fuel filter, plug wires, map sensor, and fuel pump relay. Short of pushing it off a cliff, any ideas would be greatly appreciated. ______________________________________________ Defective or sticking Idle Air Controller is a likely cause. Things which may help without buying more parts: Disconnect and reconnect IAC connector to clean pin corrosion. Remove IAC, clean pintle and seat then reinstall. Push throttle pedal to floor multiple times to clean TPI resistor. Disconnect and reconnect TPI connector to clean pin corrosion. Confirm good vacuum (or electrical) connection to EGR valve. Remove EGR valve, clean pintle and seat then reinstall. Good luck. Wendy & John.
Oh he said the engine racing...Whay did i say ignition switch.. Oh I didnt read it right ,,,,,Yep Wendy and Jhon have a point,, Also does you gas peddle stick? Could need a good cleaning______________________________________________
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