Question about 1994 Buick Century

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Stalling after running or will not start.

Replaced fuel filter, swapped relays for fuel pump, checked spark good, checked fuel pressure at fuel rail 40psi. Checked for voltage at injectors good there at 12vcd. I cannot determine if it would be cam sensor or crankshaft sensor or other components.

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Crank sensor!

Posted on Jul 14, 2009

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Posted on Jan 02, 2017

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Tip

Car Won' Start


Car won't start?
First thing would be to check all your fuses. Most fuse boxes are located under the driver side dash panel. Some cars do have an extra set of fuses on passenger side kick panel (foot area on door side)
If all fuses are good, then next thing would be to test your relays with an ohmmeter.
If all your your relays and fuses are good, you will want to check for fuel and spark. A car needs air, fuel and spark to run.
To check for spark, you can purchase and use a spark tester.
If you cannot obtain a spark tester, then the next best thing would be an ohmmeter. You can test the power coming from your coil packs or distributor depending on what you have. On distributorless vehicles (one with coil packs) the coil pack are attached to an ignition module. This module is powered by the Crankshaft Position Sensor. This sensor can be tested with an ohmmeter. The Crankshaft Position Sensor is the first thing to be tested if you have no spark in any cylinder. If you have spark in some cylinders but not all, then check the coil pack (1 pack per 2 cylinders).
If you have a distributor, test the coil that provides the spark.
If you have plenty of good strong spark, then the next step would be to check for fuel.
Fuel system consists of Fuel Tank, Fuel Pump, Fuel pump Relay, Fuel Filter, Fuel Pressure Regulator and finally carberator or injectors.
Fuel injected systems have a fuel rail. On the fuel rail is a test port for fuel pressure. If you have a fuel pressure tester you can test how much fuel pressure you have. Or you can place a rag over the valve and press it in to see if there is pressure. If not pressure, check that pump is running. You should hear it run for a few seconds when key is first placed in the ON position. If pump is not running, check fuses and pump relay.
If pump is running but fuel pressure is low, check for leaks, plugged fuel filter, or leaky injector.
If your check engine light is on, then you likely have a faulty sensor or circuit and should have the engine codes read with a code reader/scanner to pinpoint exact problem area.

For more info, ask an expert at www.fixya.com

on Mar 25, 2010 | Alfa Romeo 164 Cars & Trucks

Tip

Car won't start? First thing would be to check all your fuses. Most fuse boxes...


Car won't start?
First thing would be to check all your fuses. Most fuse boxes are located under the driver side dash panel. Some cars do have an extra set of fuses on passenger side kick panel (foot area on door side)

If all fuses are good, then next thing would be to test your relays with an ohmmeter.

If all your your relays and fuses are good, you will want to check for fuel and spark. A car needs air, fuel and spark to run.

To check for spark, you can purchase and use a spark tester.
If you cannot obtain a spark tester, then the next best thing would be an ohmmeter. You can test the power coming from your coil packs or distributor depending on what you have. On distributorless vehicles (one with coil packs) the coil pack are attached to an ignition module. This module is powered by the Crankshaft Position Sensor. This sensor can be tested with an ohmmeter. The Crankshaft Position Sensor is the first thing to be tested if you have no spark in any cylinder. If you have spark in some cylinders but not all, then check the coil pack (1 pack per 2 cylinders).

If you have a distributor, test the coil that provides the spark.

If you have plenty of good strong spark, then the next step would be to check for fuel.
Fuel system consists of Fuel Tank, Fuel Pump, Fuel pump Relay, Fuel Filter, Fuel Pressure Regulator and finally carberator or injectors.

Fuel injected systems have a fuel rail. On the fuel rail is a test port for fuel pressure. If you have a fuel pressure tester you can test how much fuel pressure you have. Or you can place a rag over the valve and press it in to see if there is pressure. If not pressure, check that pump is running. You should hear it run for a few seconds when key is first placed in the ON position. If pump is not running, check fuses and pump relay.
If pump is running but fuel pressure is low, check for leaks, plugged fuel filter, or leaky injector.

on Mar 25, 2010 | 1999 Saturn SL

1 Answer

How do I know if my fuel pump is bad? my 97 intrepid will turn over but won't start.


If you spray starting fluid in throttle body and it starts, you have a fuel related issue. If you hook up a gauge to the rail and the pressure is within spec, it doesn't always mean the pump is good. You may have the pressure but not the volume needed to stay running. It'll run but you'll have drivability problems and or stalling. Hope this helps. Good luck.

Dec 28, 2014 | 1997 Dodge Intrepid

1 Answer

My nissan armada is stalling and spitting and sputtering


1) spark plugs
2) Ignition coils
3) Low fuel pressure, bad Fuel filter (it's inside fuel tank with Fuel pump)
4) Low Fuel pressure, damaged fuel pump (inside fuel pump)
5) check for Fuel Pump Relay on PDMI. There are several issues with that relay. You can swap with fog light relay (its located also on PDMI) to check for damage.

Jun 13, 2014 | Nissan Armada Cars & Trucks

Tip

Car won't start? First thing would be to check all your fuses. Most fuse boxes...


Car won't start?
First thing would be to check all your fuses. Most fuse boxes are located under the driver side dash panel. Some cars do have an extra set of fuses on passenger side kick panel (foot area on door side)

If all fuses are good, then next thing would be to test your relays with an ohmmeter.

If all your your relays and fuses are good, you will want to check for fuel and spark. A car needs air, fuel and spark to run.

To check for spark, you can purchase and use a spark tester.
If you cannot obtain a spark tester, then the next best thing would be an ohmmeter. You can test the power coming from your coil packs or distributor depending on what you have. On distributorless vehicles (one with coil packs) the coil pack are attached to an ignition module. This module is powered by the Crankshaft Position Sensor. This sensor can be tested with an ohmmeter. The Crankshaft Position Sensor is the first thing to be tested if you have no spark in any cylinder. If you have spark in some cylinders but not all, then check the coil pack (1 pack per 2 cylinders).

If you have a distributor, test the coil that provides the spark.

If you have plenty of good strong spark, then the next step would be to check for fuel.
Fuel system consists of Fuel Tank, Fuel Pump, Fuel pump Relay, Fuel Filter, Fuel Pressure Regulator and finally carberator or injectors.

Fuel injected systems have a fuel rail. On the fuel rail is a test port for fuel pressure. If you have a fuel pressure tester you can test how much fuel pressure you have. Or you can place a rag over the valve and press it in to see if there is pressure. If not pressure, check that pump is running. You should hear it run for a few seconds when key is first placed in the ON position. If pump is not running, check fuses and pump relay.
If pump is running but fuel pressure is low, check for leaks, plugged fuel filter, or leaky injector.

on Mar 25, 2010 | Acura CL Cars & Trucks

1 Answer

Why is my nissan armada is stalling and spitting and sputtering


1) spark plugs
2) Ignition coils
3) Low fuel pressure, bad Fuel filter (it's inside fuel tank with Fuel pump)
4) Low Fuel pressure, damaged fuel pump (inside fuel pump)
5) check for Fuel Pump Relay on PDMI. There are several issues with that relay. You can swap with fog light relay (its located also on PDMI) to check for damage.

Jun 13, 2014 | Nissan Armada Cars & Trucks

1 Answer

Fuel pump relay diagrams


auto shutoff relay controls both fuel and fire..the parts store can tell you for sure..

Jan 05, 2014 | Cars & Trucks

1 Answer

1990 olds 98 suddenly dies. starter spray into inj. cover starts it but then immediately dies again. fuel pump and cannister filter ok. new module filter off inj. line under hood. still won't start. w


You cant check fuel pressure that way. You have to connect a fuel pressure guage to the fuel rail at the schrader valve. It should have 30-40psi when ignition is turned on. Injectors not functioning properly will cause a misfire Sounds like a fuel pump or fuel going out.

Jan 01, 2014 | 1990 Oldsmobile Ninety Eight

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