Doesnt start after throttle body installation

Sounds like the TPS(Throttle Positioning Sensor) or the IAC(Idle Air Control) is malfunctioning. Sometimes these sensors malfunction because of a dirty throttle body. You should clean the throttle body out with throttle body cleaner first. After cleaning the throttle body out, start the vehicle. It will be slow starting and when it does start it will run rough but after a minute or two it will settle down. You will need to clear the trouble codes. Most major auto parts stores will do this for little or no charge. After clearing the trouble codes drive the vehicle. If the vehicle runs properly, no more is needed. If the vehicle still runs the same as before then continue to drive vehicle until the engine light comes back on. Read the codes and replace the defective sensor.

crank sensors fail on these very frequently,causing running issues. if service engine soon light is on, then your mechanic should be able to pull something from computer. sounds to me like he doesn't know what he is doing. get your self a new mechanic. that light doesn't come on just for fun. it comes on to tell you that there is a problem. if a throttle body is an issue, he should have pulled P0507 ICS system. If so, there may be an issue with the throttle body. have seen few with computer issue causing throttle body code, but those are rare. most likely throttle body, but depend on code number.

A stalling problem doesn't have to turn on the check engine light . Try some basic thing's like cleaning the throttle plate (body) air passages for the IAC - idle air control valve . There are videos on youtube , also check for a vacuum leak !

Cleaning Throttle Bodies
Throttle Body Cleaning To Restore Idle Quality

Pull IAC motor off side of throttle body and spray clean it well, especially pointed part (pintle) and port it comes out of with throttle body spray cleaner. Re-install and try it. Sometimes cures it, but other times only lasts a while. If it only lasts a while and starts doing it again, replace IAC. (idle air control motor) or some refer to it as AIS. (automatic idle speed motor )

The fact that you get enhanced ignition by physically enriching the fuel air mix indicates that the normal mix is too lean, either too little fuel or too much air. 1) Check for leaks of un-metered air in to the air ducting and inlet manifold. Look for cracks and poor joints to all vacuum lines including the evaporative emission recovery lines. 2) Check that the EGR valve is closed off at start up: this should stay closed until engine has warmed up. 3) Finally check that the coolant temperature sensor is working OK; the sensor should be informing the ECU that the engine is cold and the ECU responds by ensuring an enriched fuel mix (by prolonging the injection cycle) during engine warm up.

Replace your fuel pump, starting to go out.Not bad idea to also replace fuel filter with fuel pump.

it could be your mass airflow sensor could be dirty. clean this and your throttle body out with carb cleaner and see if that works. Other sensors that might cause this problem include the O2 sensors, or the idle control motor. If this does not fix it then the alternative would be to replace the throttle body unit.

Check your fuel pump presure. Pump is in the tank. Also try and loosen the fuel cap, the tank vent may be stopped up.

Try this, remove (MAF) Mas Air Flow sensor,(be sure key is OFF) so you don't set a trouble code when disconecting wire conector, with some throttle body/air intake cleaner from the outlet side of MAF, spray the sensor clean, let dry, reassemble.Remove snorkle from throttle body, and with a old tooth brush, clean throttle body& plate with cleaner, may take a couple of cans if throttle is badly 'coked' up. Hope this helps.

when was the fuel filter last changed as can be this.the throttle body will need a good clean out, can also need a new air filter. and it could also have a vacuum leak or intake gasket leak.