[deville92]

so I have 2 questions. first my car has a irregular idle when I first start it up and it stops when it warms up.I checked everything and everything seems good (like the fuel injectors nd all that) and my second question is I don't know if I'm doin something wrong but when I press econ for my heater to turn on it turns on but only the floor vents turn on.I don't no if they only turn on if I press auto. if anyone can help me with atleast 1 of these questions that would be awesome. thankx

 

[basscatt]

so I have 2 questions. first my car has a irregular idle when I first start it up and it stops when it warms up.I checked everything and everything seems good (like the fuel injectors nd all that) and my second question is I don't know if I'm doin something wrong but when I press econ for my heater to turn on it turns on but only the floor vents turn on.I don't no if they only turn on if I press auto. if anyone can help me with atleast 1 of these questions that would be awesome. thankx

-------------------------
:welcome:

my car has a irregular idle when I first start it up
and it stops when it warms up
check for Diagnostic Trouble Codes -

if you don't know how - go here and read the ENTIRE post -

http://www.cadillacforums.com/forum...ncluding-1985/138257-how-pull-codes-dtcs.html

if you have any codes - post them here -
ALONG WITH THEIR DEFINITIONS -
--------------------

I don't know if I'm doin something wrong
but when I press econ for my heater to turn on
it turns on but only the floor vents turn on
the ECON button represents ECONOMY MODE -
and all it does is prevents the AC compressor from running -

as far as the heat goes -
you have no control over WHERE the air is discharged from -

heat only comes from the heater - floor - vents - or the defrosters -

the center vents will only supply cold AC air -
or outside ambient temperature air -

this information is in the Climate Control section of the Owners Manual -

 

[Ranger]

Define "irregular idle". Misfire or surging?

 

[deville92]

thank you about the heater. but I checkd for codes and nothing came up but I do know my battery has a few bad cells and I have to wait a few days to get enough money to get a new one but any chance that could help?

sorry about the double posts but it like pidders when I first start it.kinda like it wants to die

 

[Ranger]

Double post fixed. It does that now and then.

Pull the DTCs like Bass said. That may help us a lot. Wouldn't hurt to clean the TB and check for a leaky FPR either.

How old are the plugs, wires, cap & rotor?

 

[deville92]

I just checked for codes and nothing came up. and sorry I'm kinda new so I don't really know what TB or FPR stands for. and the plugs and wires are kinda old.should I just change them too to be safe?

 

[Ranger]

For future reference see the acronyms Sticky when in doubt.
TB = Throttle Body
FPR = Fuel Pressure Regulator

Could be in need of a tune up. That could cause a rough idle.

 

[deville92]

thank you so much I'm gona look in to it

 

[AElayyat]

For heater it's like the others said, floor vents only.

The idle going up & down could be a bad isc; idle speed control motor.

 

[blue90]

If you are new to this forum and your car. The first thing to do is read through all of the "sticky" posts at the top. There is a wealth of info up there to help you understand how to get the most out of your car. You'll save some money too! You can get a lot of diagnostics from the onboard computer, but a code reader is a big help. Do what Ranger suggests. He and several others will really get you on top of the situation with great advice. If you can, get all of the "tune-up" stuff taken care of-filters, cap, rotor, wires, plugs and the battery. Clean the throttle body and fuel pressure regulator (regularly!) and see if that doesn't clear up the idle. If the idle hunts around it might be the throttle position sensor or the throttle position motor, but if it is just running rough, I 'd do the other stuff first. Good luck.