hey i have a 89 camaro 5.0 tbi,i put on an open elment filterfrom mr gaskets and my muffler at the back was remove because it was rusted.what could be the reason that i put 5 bucks in it and i drive for like 10 min and its gonna it never waisted this much gas.what can it be ?the muffler missing or the air filter?help me out guys

 

Probably neither. It is more likely the installation that changed something. Make sure the IAT sensor is still connected. It may have been attached to your old air leaner.

Beyond that, you'll have to start troubleshooting from scratch. Any error codes?

 

you mean the sensor that is on the old base aircleaner that u install into the new bottom base of the open element i put it in but is not tight because the hole is bigger but its inside the base.trouble shooting for what i think its my injectors there shooting rough not smooth?

 

MIA305,

Well that will do it. As long as the IAT is electrically connected, an little loose fit in the air cleaner isn't a problem. Your injector spray patter, however, could be a problem. You should be able to observe a regular, cone-shaped pattern from under the injectors, with no streams or drips. A poor spray pattern can be a symptom of incorrect fuel pressure or dirty injectors.

I'd start with a fuel pressure test, then go from there. You should be reading 11-13 PSIG constantly with the pump running, regardless of load.

 

ok how do i check the pressure on my injectors?i did the code search of the ecm and i got code 44 lean exhaust what can that be? i really need my car to waste lees gas

 

You need to remove the fuel feed line from the throttle body and install a pressure test adapter. Many pressure test gauges come with the necessary adapter.

 

and then i reconnected it or just open the key and let it run?do i cover the end of the pressure tool or just let it run and it give me right pressure?

 

The adapter is a 'T' style fitting that allows fuel to flow to the TBI and provides a test fitting to attach a pressure gauge. The engine can still be operated while the pressure is tested.