My rpm gauge when i turn car on for a few minutes it goes from 1-2 and back and forth for a bit. I think it is probeally my radiator since it has a crack on the top of it. Any ideas?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by player01018 &raquo;</TD></TR><TR><TD CLASS="quote">My rpm gauge when i turn car on for a few minutes it goes from 1-2 and back and forth for a bit. I think it is probeally my radiator since it has a crack on the top of it. Any ideas?</TD></TR></TABLE>

A fluctuating idle has to do with the IACv (Idle air control valve) and FITv (fast idle themro valve) parts. a cracked radiator wouldnt necessarily cause it to do that.


Edit: Actually, IACv uses coolant temp, so if it were getting an inconsistent flow (too much air mixxed with coolant) It would cause it to malfunction



Modified by 97Ej6mike at 7:30 PM 10/28/2007

 

i noticed if i fill it up full it is fine but it if it does it it is empty.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by player01018 &raquo;</TD></TR><TR><TD CLASS="quote">i noticed if i fill it up full it is fine but it if it does it it is empty.</TD></TR></TABLE>

You may be getting air in the coolant system because your radiator has a leak.

Get a new radiator and see if it fixes the problem. The way it sounds you need a new radiator anyway.

 

I would buy a new radiator and bleed the system properly and see what happens