Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
ok,you have good fuel volume,and you have spark so the problem has to lie in the injectors or circuit you can test the pulsating ground at the connector to the injectors ,,the site still has a problem with getting diagrams and pictures for some reason so please bear with me ,(not my fault)at the connector there are lt green and lt blue wires the lt green go to injectors #1-3-5 and the lt blue go to injectors #2-4-6 so use a test light to power and crank over the motor the light should pulsate on and off it the circuit is good ,if it is dim or does not pulsate right it could be a short or shorted injector ,if there is no light it could be the ecm .let me know please ,and sorry again about the diagrams it would be so much easier if i COULD SEND THEM TO YOU ...GUY..
ok ,my data is back online here are some flow charts ,I do think you have an injector problem ,either one or more injectors are shorted ,...guy...
To test for this condition:
also the fuel pressure should be at 40-47 lbs,
you might have to take off the intake to gain access to the injectors if the resistance is not where it should be
hi ,I am,going to give you the complete flow charts for no start and fuel follow these and let me know the resuls also here is the pin-out readout for the powers and grounds going to the ecm ...guy
you will have to bear with me something is wrong with this site and is not allowing me to post theflow charts and diagrams .
CIRCUIT DESCRIPTION: This chart assumes that battery condition and engine cranking speed are OK, and there is adequate fuel in the tank.
the tps will not stop a vehicle from starting ,the grey wire is the 5 volts reference to the tps the black is ground and the blue is the input back to the ecm for determining the pulse width ratio ,the test you saw was for the tps reading when connected and hooked up to a scanner,let me try to get you those flow charts and diagrams i am not sure if the site is up and working fully ...guy
also check these values and voltages