Question about 1999 Pontiac Sunfire
My car starts fine when it is cold outside, but when it is warm it is hard to start.
Scan data if engine temp. is normal if ok see if there is engine faulty code.
hope it helps
Posted on Mar 24, 2014
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Posted on Jan 02, 2017
SOURCE: will not start when engine warm
Sounds more like your ignition module is getting hot and not working. I'd go there first before replacing the ECM. You can remove the ignition module and most NAPA stores have the ability to test them for you. Make sure they test it at least 5 times. This way it'll simulate starting and stopping.
Posted on Jul 23, 2008
yes...first...how old is the battery?? you have 3 options...the battery is bad, the alternator is bad, or the serpentine belt is bad...most auto parts stores will check your battery for free while it is in the car....otherwise take it out and bring it in to have them check it...
Posted on Jan 15, 2009
Check the cold start injector useing a digital multimeter with a bar graph. Unplug the injector wires and insert the probes into the wiring plug, crank the engine and the bar graph should pulse if it does remove the injector and with the wiring reconnected and the injector held over a suitable container crank the engine and observe the spray pattern. If insufficient replace injector. This should be a starting point at least
Posted on Jun 05, 2009
Please check the fluid level in the power steering pump. After putting on a new hose the fluid may have traveled through the system and you may need more fluid.
Posted on Oct 02, 2009
It is a default setting in the vehicles computer. When the remote start is activated it only enables the engine and the accessories are on standby until the key is inserted. As of now I am not sure of a change to this default setting.
Posted on Jan 16, 2010
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