Question about Chevrolet Astro
If changing the map sensor doesn't work, check the vacum sensor. I experienced the same symptoms when my car's vacum sensor got busted..
Posted on Jul 04, 2009
Thanks - if you have additional concerns - please use the "Continue With This Expert" option so we are connected in the future.
BTW - have you had an OBD scanner on your Vehicle to read any error codes??
Posted on Jul 03, 2009
If You can start the vehicle off ether only then you have a fuel issue. the pump is working and the fuel pressure regulator is too. so either the injectors are not getting an electrical signal to open and close of possibly, Your oil sending unit is defective and has shut down your fuel system (a safety).
The vehicle wont start unless you used ether but then it got worse and even with the use of ether, the vehicle wouldn't start, right? Did the engine light come on and were you able to retrieve any codes? The more info that you get the better. It really did sound like a bad oil sending unit but none the less it didn't work. Unfortunately you are doing process of elimination. With out a good scan tool it wont be easy or fast to fix. Your problem could be a bad ground or a broken wire. On the front/top part of the motor, at the thermostat housing, there is a ground going to one of the bolts. That ground goes to the ECM. Make sure it is clean, tight, free of corrosion, and not broken. You have already tried replacing the ICP, pick-up coil,plugs,wires,cap and rotor, and fuel filter. All good things to consider replacing. Check the PCV valve,coil (for primary and secondary resisdence),vacuum leaks, IAC, coolant temp. sensor, Both fuel injectors (you said the fuel line pressure is 58psi, so the pump and regulator are working but why isnt it spraying past the injectors) check the wiring and connections at the injectors. Check the fuses and relays asociated with the fuel,ignition, and engine. I dont know if you already checked it but turn the engine over and see if the distribtor spins.
Thanks for contacting Fixya.
Posted on Jul 02, 2009
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Posted on Jan 02, 2017
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