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XfireZ51 · 07-25-2009

Gary,

With key ON, the TPS signal (between black wire and blue)
should be around .54v. Once you have it set up, read the TPS signal voltage as you open and close throttle with motor off but key ON. See if the voltage change is smooth or changes in a "choppy" manner. Does the reading change abruptly? Also, make certain the TPS switch assembly is securely attached and not loose. Move switch wires around and make certain voltage readings aren't changing.

07-25-2009	#10
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: Rough Idle/Hesitation/Backfire Gary, With key ON, the TPS signal (between black wire and blue) should be around .54v. Once you have it set up, read the TPS signal voltage as you open and close throttle with motor off but key ON. See if the voltage change is smooth or changes in a "choppy" manner. Does the reading change abruptly? Also, make certain the TPS switch assembly is securely attached and not loose. Move switch wires around and make certain voltage readings aren't changing.