Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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When its hard to start. The engine cranks long time. When it starts how does it run?
Do you have any engine lights on when its running?
Do you have a fuel pressure gauge?
Need to test the fuel pressure. Maybe week or not holding pressure.
There is a port on the passenger side on the fuel rail.
The fuel pressure should be 50-60 psi
Should not drop more than 5 psi in 3 min after pump shuts off.
It will only run for 2 sec. May have to key off wait 10 sec than key on again
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If it starts and the engine RPM is not high enough. The computer keeps the starter engaged.
Did the fuel pressure keep dropping after 3 min?
When it was hard starting was the fuel gauge still connected?
Yes that would helpful.
Trying to tell if the fuel is dropping. Ether draining back to the gas tank or leaky injector.
May want to try cleaning the throttle body plates also.
Looks like there is no problem with the fuel system.
Will it only crank long after it sits over night?
Did you clean the throttle body?
Can you keep the fuel gauge on the truck over night?
See if you have fuel pressure on startup.
When you say grinding. Is this during the cranking like its slow?
If you hold the gas pedal down just a little does that help?
Clean throttle body ?
Yes do that next.
Make sure the key is off when you do it.
Also need to drive it after cleaning.
There is a idle relearn procedure but you need a scan tool to perform it.
Just checking to see how's it going?
Yes the low battery can affect starting. Because your throttle is electric.
As for the headlights not sure if the body control module would default them off. For a low battery.
Have never seen it before.
If the battery is more than 4 years old. I would replace it
Was the battery bad?
Do you still need more help?
If you can take a moment and rate may service.
It is possible the starter is going bad.
When it makes the noise does it crank slow?
Its really hard to diagnosis with out hearing it.
Have not replaced vary many starters.
Yes that would help.
When it makes the noise it is at the same time it crank long
I will keep researching