Question about 1995 Pontiac Sunfire

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Runs hot already replaced fuel pressure sensor, fuel pump, water pump,fuel filter, ignition coil pack and ignition module

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  • yadayada
    yadayada May 11, 2010

    has the thermostat been replaced? has the radiator been cleaned? when does it run hot? at idle? at freeway speeds? why would the fuel pump cause it to run hot???

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1 Answer

Other than the water pump your onto other issues Why all the new parts,who did that and why. Just asking. Stay with the other answers. Thermostat.Good Radiator flow,Fan working. Help us out here and stay within the coolant area.

Posted on Sep 29, 2009

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Fix a problem with not starting when car is hot i still turns over


not starting when hot indicates an electrical problem that comes from a component breaking down when hot.
Items that fall into this category are coils,coil packs, injector controls,injectors, ignition modules and fuel vaporization ( low fuel pressure from failing fuel pump/relay
I would leave the pump as an absolute last but would be looking at coil or ignition module. have you run the fault codes to check for other sensor problems such as cam/crank position sensors or immobiliser problems. All subject to heat affected problems.

Feb 07, 2015 | Cars & Trucks

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

Have a 1991 bonneville le has to sit for a few hours before it will restart


You may need to check fuel pressure after the engine warms up and shuts off. Maybe the fuel pump gets hot and stops. Have you checked for spark after it dies?

Jan 25, 2014 | 1991 Pontiac Bonneville

1 Answer

91 cutlas ciera 3.3l v6 backfires then stalls but starts back up


SOUNDS LIKE THE IGNITION MODULE OR COIL PACKS HEATING UP

Sep 12, 2012 | 1991 Oldsmobile Cutlass Ciera

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

Hi, i have a 90 olds 88 royale and it dies randomly. It will start after it sits for a bit and run with no problems. I've already changed the gas pump, gas filter, ignition module, coils, even the air...


Put a crank sensor on it to fix. They get hot and stop working. Next time it stops pour or spray some water on it and try to start it. Old trick to solve problem

Jan 22, 2011 | 1989 Oldsmobile Eighty Eight Royale

1 Answer

My 2000 ford focus cranks, but does not start. I


You will want to find out if you are not getting spark or not getting fuel.
If no fuel, then bad fuel pump, plugged fuel filter, or bad fuel pressure regulator, or bad fuel pump relay.

If no spark, then bad crank sensor, or ignition module, or coil packs.

Oct 14, 2009 | 2000 Ford Focus

1 Answer

Won"t start sometimes.


sound like fuel pump pressure low change fuel filter.if that dont fix it . probably fuel pump. if fuel pump good . get a scanner. because a bad coolant sensor cam sensor crank sensor . coil pack module could be bad.also bad pcm.

Oct 17, 2008 | 1999 Oldsmobile Alero

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