Thanks guys, I will check the O2 sensors with a metre and see what kind of results I get...I have a sinking feeling it could be the head gasget problem though.
Probably time to trade in / sell the car as its also needing tires, suspension, AC Recharge, and has an intermittant cooling problem (which could have caused the head gasket issue...sucking air somewhere and causes the notorious air bubble problem which blows out all the coolant) I hate to get rid of the car though, it still looks so nice, and there's very few other vehicles out there that have this nice of an interior. I guess I have some decisions to make...it is allmost 15 years old. -------------------- I had a similar issue that was fixed with new head gaskets. It would probably be cheaper to just run 93 octane for the remainder of time you own the car. --- In [email protected], Geoff <[EMAIL PROTECTED]> wrote: > > This sort of knocking can be caused when the engine runs too lean. > > You should be able to watch the O2 sensors oscillate between .2v and .8v > after they're fully warmed up using a cheap DVOM. > > See http://www.forparts.com/o-21.htm for a good diagnostic procedure. > > --Geoff > > On 3/28/07, Raqoon <[EMAIL PROTECTED]> wrote: > > > > I have a 93 Intrepid ES, 3.5 engine. > > > > When I've been driving it for awhile....say a half hour or so, its > > good and warmed up, I will get alot of pinging in the engine. I'm > > using the correct fuel (89 Octane) car is not overheating as the > > gauges are all where they should be and the coolant is fine, car has > > had new radiator, waterpump, thermostat, plugs are good, wires have > > been replaced in the past, fuel filter replaced...doesn't seem to be > > any loss of power...I am wondering if this could be a sign that the o2 > > sensors need replacing. The last time I took it through emissions, my > > Nox levels were getting close to the maximum, even thoguh the car has > > had a new catylitic converter put on it, and had just had the plugs > > changed. > > > > Any ideas? Car has 250,000 km's on it. > > > > Thanks > Web: <http://groups.yahoo.com/group/dodge_intrepid> Subscribe: <mailto://[EMAIL PROTECTED]> Unsubscribe: <mailto://[EMAIL PROTECTED]> Moderator: <mailto://[EMAIL PROTECTED]> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dodge_intrepid/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dodge_intrepid/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
