Car dies atfter throwing it into nuetral

[eDeclpse92]

hey. I have a 1992 eclipse gs and i am having some trouble with it. When the engine gets warm and i throw it into neutral to coast, my engine will try to stay alive and idle at 600 rpms and then die. Car idles fine at a stop. I have a year old battery in it, just put a new altenator in it and a new fuel filter. I also put in another mafs and it still does the same thing. The weird thing is if i unplug the mafs, then my car will run fine with no problems. i do get a Check engine light becasue of it. I am stumpped! Any help will be appreciated. Thanks.

 

[r1991_4g63t]

sounds like you might have another bad mas

 

[TURBOGSX]

whats your idle after the car is at operating temp and in nuetral just sitting there? try turning idle up a little bit then take for drive and see what happens.

 

[eDeclpse92]

at operating temp, the car idles at about 1000 to 1100 rpms. I have been messing around with it and when i set the idle higher it seems to not die as often when i throw it into nuetral.

 

[eDeclpse92]

o and i have a 160 dgree thermostat in my car and ever since i have put that in i cant find why my fan motor is always on.

 

[r1991_4g63t]

its possible you have air trapped in the system let it idle for a while with the cap off and keep it full til it stops going down

 

[eDeclpse92]

ok ill try that tomorow. thanks.

 

[Defiant]

When the engine gets warm and i throw it into neutral to coast,

Don't do that. Don't ever coast.

 

[twistedimage03]

My question is why would you want to in the first place? If it idles fine at a stop then I would say not to worry about trying to coast.

 

[eDeclpse92]

i would like to have the ablity of being able to coast down a big hill without my engine dying on me. would running without my mafs hurt my computer or car in anyway?

 

[r1991_4g63t]

your car wont run right, but listen to defiant dont coast

 

[eDeclpse92]

hey, thanks for all the advice. i started to test all my components, like tps, isc and when i put them back in, my car ran great. so maybe it was just a dirty or loose connector.

 

[r1991_4g63t]

good to hear