why does my car burn fuel richly and my tactmeter fall on 0 while im driving .this causes my car to shift hard when i put it in gear and when this happens my car idles high and smoke comes out of the

okay the air intake temp sensor will play a key role in the richness of the mix...perhaps yours is faulty...also the ambient air temperature while telling you what temperature may also be linked to the data for analysis by the ECU...would start with replacing the IAT sensor~....and take it from there~

looks like the "air charge" temp sensor may play a key role here too~

the TPS is what tells the computer where your foot is....they do wear out and need replacement...if sending errant signals to the computer could very well do what you are describing....check the diagnostic trouble codes before we start throwing parts out there~

you can get a simple scanner to read your OBD-II codes for under twenty~

there are no codes showing up

there would not be if it were a bad fuel pressure regulator~

the high idle would indicate a vacuum leak...the reduced performance could be attributed to a lack of regulation~ examine please this vacuum connection and performance of your fuel pressure regulator...looks something like this~