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Supra running problems

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Old 05-22-2011, 11:30 AM
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Default Supra running problems

I bought a 1987 7mge supra with a rebuilt engine. The engine harness is in rough shape and i am not running an 02 sensor or egr valve. My problem is that when I can get the car running it idles really low bouncing between 500-400 rpm until it finally just stalls out, or when I press the accelerator it dies on me. I feel as if this could be a fuel problem but im not sure, what would cause this?

Last edited by Daluz; 05-22-2011 at 11:39 AM.
Old 05-23-2011, 12:25 PM
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Check the TPS (throttle positioning sensor) also, make sure the throttle bars that open and close the throttle body are adjusted right. The spring that pulls it back onto it self will wear out over the years, just fiddle with it and see if anything happens.
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Old 05-23-2011, 12:41 PM
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Not having an 02 is guna cause problems
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Old 05-23-2011, 05:30 PM
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alright thank you ill look into
Old 05-23-2011, 08:18 PM
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Originally Posted by 240kidx
Not having an 02 is guna cause problems
+1, but idk if it would effect the idle as much as the ones I posted. But look into that also.
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Old 05-23-2011, 10:42 PM
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make sure your vacume lines are routed and connected correctly
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Old 05-24-2011, 04:41 PM
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Yeah im worried my vacuum lines aren't routed properly. i have a terrible air fuel ratio im running really lean
Old 05-24-2011, 04:48 PM
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You probably will with no o2 sensor, u sould get one of those first is it a gte or ge?
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1986 Toyota Supra Hardtop NA (Maroon)
1989 Toyota Supra Targa CT-26 (White w/ Black accent haha)
Old 05-24-2011, 05:10 PM
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ge, i need to get my hands on a new wiring harness also because i believe the 02 wire was removed, and i have pacesetter exhaust headers back so the 02 sensor was moved
Old 05-27-2011, 03:08 AM
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where can i get a chart of how all the vacuum lines are routed?


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