2003 sunfire

2003 PONTIAC SUNFIRE
139,000 MILES
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JOSHUAHALON
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2003 sunfire. it will go fine for awhile. then when it stops, 25 miles or so, stops at a light or something, it wants to choke out. the check engine light comes on, the trac off light comes on, the temp gauge reads slightly higher than 195 (it runs normally at 195), and it acts as if it is out of gas, hit the accelerator it sputters and dies. start again, it will run, sometimes it returns to normal for a bit, other times it is just dying.
Things tried: replaced TPS, no dice! replaced tps and ground wires/ no go!
what next!!!!!???
Sep 7, 2012 at 10:33 PM
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SATURNTECH9
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What are the exact code numbers you have you mention the check engine light comes on?
Sep 7, 2012 at 10:42 PM
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JOSHUAHALON
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p0122
throttle position sensor,circuit low
Sep 7, 2012 at 10:44 PM
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SATURNTECH9
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Do you have a scan tool that will read live engine data and a multi meter to do some testing?
Sep 7, 2012 at 10:58 PM
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JOSHUAHALON
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i do not..after they replaced this the first time, it broke down, and the tech that looked at it, said it spit out the above code
Sep 7, 2012 at 10:59 PM
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JOSHUAHALON
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it has a brand new TPS and ground wires right now
Sep 7, 2012 at 11:02 PM
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SATURNTECH9
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If you're going to diagnose this problem yourself were going to need those tools.So we can see what the sensor is reading measure voltages resistance etc.
Sep 7, 2012 at 11:15 PM
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JOSHUAHALON
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i have had it at a mechanics twice for a total of 6 days...i need a guide where to start..
Sep 7, 2012 at 11:21 PM
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JOSHUAHALON
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they put a pressure gauge on the fuel line..said it was good.
it seems to be extremely hot, though the gauge doesnt show it. so hot the hook to hold up the hood is hard to hold. the rpms seem to ramp up and down. 2000 up to 2800 and down while holding steady on accelerator. when it is in death mode, it goes from 1000 down to 200 up to 1000 rpms...
Sep 8, 2012 at 12:06 AM
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SATURNTECH9
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Like I said before if your going to fix this yourself correct?If so you will need a scan tool that can read live engine data to read what the tps is reading in computer.Also a multimeter to read voltages check wires grounds etc.That's just to start you made need other things as time goes on.So unless your will buy or borrow these things then I don't know how much help I can be to you.
Sep 8, 2012 at 12:35 AM
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SATURNTECH9
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A flase tps reading can cause shifting issues idling issues power issues etc.
Sep 8, 2012 at 12:36 AM
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JOSHUAHALON
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Would an over heating condition cause the rough idling, dying out, and false readings?
the radiator/cooling fan is not coming on...would these hot conditions have caused these issues? False tps, stalling, rough erradic idle?
Sep 20, 2012 at 1:33 PM
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SATURNTECH9
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You wernt overheating before sounds like you have a another new problem the overheating isnt going to set the code P0122.So have you gotten any tools yet like i said you needed yet?
Sep 20, 2012 at 3:10 PM