Is the level in the radiator holding, or are you loosing water?
I had a few heat related issues with my Corsica in college, the first
was a bad sensor that controlled the fan, but it was consistent on hot
days at low speeds, doesn't fit with your symptoms, unless it's an
intermittent short, but it did take about a week of trouble shooting
and replacing everything my dad and I could think of for a vehicle
that didn't have a temp gauge or a functioning dummy light, the only
indication I had of problems was the boiling sounds when I would shut
it off. The later one was a blown head gasket. At that point the
vehicle was done and we junked it.
The way I finally isolated it to that sensor was by unplugging it and
bypassing it's connection with a paperclip, with that the fan ran all
the time, I replaced the sensor, plugged it in, and problem solved.
Cooling issues are a real pain in the ass.
On Thu, Aug 28, 2008 at 9:08 PM, Phillip Batson <pbatson68@yahoo.com> wrote:
>
> Tried a new cap, and it dinna work. I left the cap off while I let it run for a while, and it seemed like bunch of bubbles would come up every few seconds. I let it run for a while. When revving the engine, it would draw way down. So I added more 50/50 until it was back up to the top. Then I capped it off. I'll try it again in the morning.
>
> I've verified the fan works, pump is working. So either the tstat is a bad one, or temp sender/sensor is bad. There is a coolant temperature sensor and a coolant temperature sender. I can see the sensor, but I have no idea where the sender is at. Anyone else have a clue?
>
>
>
> ----- Original Message ----
> From: Bernd D. Ratsch <bernd@dodgetrucks.org>
> To: dakota-truck@dakota-truck.net
> Sent: Thursday, August 28, 2008 11:10:13 AM
> Subject: DML: RE: Temperature
>
>
> Air bubble in the cooling system or a bad radiator cap.
>
> - Bernd
>
> -----Original Message-----
> From: Phillip Batson [mailto:pbatson68@yahoo.com]
> Sent: Thursday, August 28, 2008 9:42 AM
> To: dakota-truck@dakota-truck.net
> Subject: DML: Temperature
>
>
> This is a weird one, and I'm not sure what is causing it. Here is the
> scenario:
> Start up until engine is at operating temp is about 3 minutes. After about 3
> minutes, the temp climbs past the norm, and proceeds to the max reading on
> the gauge. I'd say it takes about 15-30 seconds to get there.
> At this point, if I floor it or rev the engine in neutral, or turn off the
> engine and restart, the temp gauge goes up to the max reading for a second
> or two, and then drops back to the norm reading in about 3-5 seconds. Then
> it is rock solid and doesn't ever show any kind of overheat. I never hear
> any boiling sounds or see steam coming from the engine. The coolant bottle
> is full.
>
> This leads me to believe something is getting "stuck". I already changed the
> thermostat thinking it was sticking. But it hasn't fixed it. What else do I
> need to look at?
>
> Oh, and this isn't my truck, it is a '95 plymouth voyager. :) I was hoping
> you mechanical wizards might be able to point me in a direction to try and
> fix this.
>
> Thanks guys!
>
>
This archive was generated by hypermail 2b29 : Fri Sep 05 2008 - 15:32:20 EDT