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I have a 99 chevy tahoe that wont start. We changed the battery, it has spark, has fuel, fuel pump working, has pressure, spark plugs cleaned, new crankshaft position sensor, new distributer cap, rotor and wires, has been going on for over 2 months now, had it running great this week now doesnt want to start again, it cranks over and then when it is about to start its just starts cranking again! Help!!
Everyone else says to get rid of it, but we are in too far not to find out what it is!
Re: I have a 99 chevy tahoe that wont start. We changed...
Loose battery cable at the starter end, or sensor trouble, tighten cables, see if this helps, usually does, I get 50.00 per hour to check this, I render this 4 free 2 u.
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You don't say if you have checked anything else. It could be any number of issues. I would look into either the crank sensor or the ECM as possible failures. Did you have any Service Engine Soon lights recently? Have you had the ECM checked for any stored trouble codes?
Either it is not getting fuel into the cylinders OR the spark plugs are not firing. Could be defective ignition switch, blown fuse to the fuel pump, blown fuse to the ignition, bad connection somewhere, you failed to pay for your permit to drive from the Homeland Security Bureau
Have the fuel pressure at the fuel rail checked. If you just want to throw parts at it: Fuel filter by the tank first. Fuel pressure regulator next. Order of ascending expense and likely hood. Does the fuel pump hum louder lately? The fuel pump may be on it's way out. It's not getting enough fuel to do anything but idle. Why that is takes some investigation. Somebody like Auto Zone may check your fuel pressure. If the fuel pressure is good, bad spark plug wires are the next guess. Lift the hood and run the engine in the dark (take the light bulb under the hood out if it still works to do this) If you see little lightening bolts traveling over the engine you need new plug wires. If the fuel pressure is good, the wires are good, change the spark plugs. Good Luck!
replace fuel pump relay. check all fuses to ignition and pcm .make sure they are not loose. check coil wires make sure they not loose.look at battery if you have the ac delco seal battery make sure green eye still there .if its black have battery check out.
replace your MAP sensor(manifold absolute pressure) the map sensor is the computer for your fuel pressure regulator telling how much pressure. Unless your tahoe runs like **** going up hill than it inevitably your fuel pump
hi i have a 1997 chevy tahoe that starts but won't stay running i have changed fuel pump, fuel filter,relay ,spark plugs, and just changed rotor and dis. cap ready need some help to figure this out please.
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