08-05-2010, 07:16 pm
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| Corvette Enthusiast Join Date: Aug 2010 Posts: 6
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|  live data readings
96 LT4: have 3 suspect live data readings. TPS% drops to zero @ full throttle position. MAF lbs/min never moves off zero (engine running @ highway speed). Secondary Air idicates "error". No engine faults are present. Engine running normally. Could any off these affect engine performance? ed | ||||||||||||||||||||
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08-05-2010, 07:28 pm
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| GM World Class Certified Technician  Join Date: Nov 2006 Location: New Haven Ct Posts: 5,141
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HI there, Both TPS and MAF will substantially cause your engine to have problems. BUT, my question is what tool are you using to scan the system???? Some aftermarket scan tools can sometimes create issues and not interprete the data correctly. If you had these issues, you would definately have a check engine light and a code. Allthebest, c4c5 | ||||||||||||||||||||
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08-05-2010, 08:06 pm
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I'm using a UFITECH U381 OBDII scanner. Thanks much. ed | ||||||||||||||||||||
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