Engine overheated, now car won't start without giving it gas
2005 Magnum RT overheated due to fan's not working. replacement fan motors on order. let it cool down and went out to start it to make sure it was ok. started fine. the next morning went out to check it again and it started then died almost immediately. tried it again and it died again. tried it again, this time giving it gas for about 5 or 6 seconds to keep it running, let off the gas and it stayed running. now i have to do this every time i start it. any thoughts????
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Re: engine overheated, now car won't start without giving...
Some cars cut off as a fail safe to overheating especially on newer cars. The computer controls the fans and if they are not working the computer is probably telling the car to shut off. Have you replaced the motors already, if not, this is what's happening. Once you replace the motors it should run fine. I wouldn't suggest driving it too much with this problem as it may affect the computer by giving it false info.
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P2098 is an O2 sensor code. You need to inspect the connectors where the upper and lower O2 sensors connect. Make sure the wires are not damaged, burned, and that the connectors are not corroded. Once you have inspected those you will need to determine if the sensor(s) need to be replaced. If you found no damage to the wires and/or connectors then you probably need to replace the upper sensor. It is possible that the sensors are telling the electronic module to keep the engine from starting. However, you need to determine if you are getting fore to the spark plugs. If you are not then that is where you need to start with troubleshooting after you correct the O2 sensor issue.
If both sides are reading the same, the compressor is not working, or you have the gauges hooked up to the same side somehow. The system should read what the outside air temp is until the compressor starts running.
Absolutely not!! Was it bubbling before the rebuild?? If the coolant is bubbling its overheating, try to flush the coolant first and make sure the radiator isnt clogged, replace the thermostat and then go to the water pump. You can also make sure you have a 50% water coolant mix and not straight coolant. Worse case scenario is you have a bad head gasket or even a cracked head or block that's causing the coolant system to be pressurized by the combustion chamber!!
This problem can sometimes occur due to dirt entering the throttle assembly. It can bring codes on relating to forced engine shutdown, which sounds dramatic at best. Normally a good cleaning of the throttle valve assembly cures this fault. It happens because the system fails to see throttle response or closure within parameters. This should be your first action to take, rather than spending money needlessly...
Hope this helped?
Observe the car's engine as it runs for 10 minutes to ensure that the electric fan for the radiator is coming on, if not either the fan relay, fan's coolant temp. sensor, or the fan itself is bad, try the relay first it is the least expensive, if this is the type of vehicle that has no electric fan replace the clutch fan.
have seen egr valve cause performance problems without setting any codes..and if egr is not working properly,can cause a spark knock..oxygen sensors as well..also make sure no injector or coil connectors are miswired to other cylinders