Re: RE: Rough Cold Idle/Coolant Sensor

From: Marty Galyean (mgalyean@acm.org)
Date: Tue May 16 2000 - 08:54:07 EDT


Oxygenated fuel? Its that time of year for most areas for MTBE, crazy idles,
and pinging.

"Bernd D. Ratsch" wrote:

> OK...this is just too wierd.
>
> Several people on the DML have posted just about the exact thing as well as
> two people at my work as well.
>
> What the hell is this??
>
> - Bernd
>
> -----Original Message-----
> From: owner-dakota-truck@buffnet.net
> [mailto:owner-dakota-truck@buffnet.net]On Behalf Of Heather M
> Sent: Tuesday, May 16, 2000 12:05 AM
> To: dakota-truck@buffnet.net
> Subject: Re: DML: RE: Rough Cold Idle/Coolant Sensor
>
> My little baby 4cyl has this problem...whenever I start it in the
> morning...it kinda hesitates staying at a high enough idle to not choke and
> kill the engine. :( I changed the plugs thinking they were dirty and not
> connecting and nada...used a fuel injector treatment and nada...now what?
>
> Heather
>
> http://dakotatruck.tripod.com
>
> ----Original Message Follows----
> From: "Wisotzkey, Rich" <Rich.Wisotzkey@gd-wts.com>
> Reply-To: dakota-truck@buffnet.net
> To: "'dakota-truck@buffnet.net'" <dakota-truck@buffnet.net>
> Subject: DML: RE: Rough Cold Idle/Coolant Sensor
> Date: Mon, 15 May 2000 12:13:29 -0400
>
> Kyle,
> Before spending any money on sensors, take off the TB and clean it. Make
> sure you clean the IAT sensor and where it seats. Let me know how it runs
> afterward.
> Rich - Ashburn, VA
>
> -----Original Message-----
> From: Kyle Kozubal [mailto:grndak4x4@home.com]
> Sent: Monday, May 15, 2000 10:57 AM
> To: dakota-truck@buffnet.net
> Subject: DML: Rough Cold Idle/Coolant Sensor
>
> First, what could/would cause my truck to run rough, only on cold start-ups?
> Once the truck warms up and is started things are fine, and it doesn't idle
> like I have a 440 under the hood with a wild & nasty cam stuck in it. My
> truck has done this for a while now, and even though it doesn't bother be
> 'that' much, I still would like to fix it. I am leaning towards the coolant
> sensor, which is about $15 or so.
>
> Has anyone ever replaced this coolant sensor on their Dakota? My
> understanding is that there are 2 types:
> *One is located close to the thermostat on the manifold which sends the
> computer how warm/cold/hot the coolant actually is. Could false readings or
> a bad sensor could cause a rough idle at start ups(both cold and warm
> startups)?
> *The other is used for the temp gauge on the dash. This would obviously
> cause a poor or inaccurate reading on the temp gauge on the dash. Where is
> this one located?
>
> I have read alot online concerning the coolant sensor and have found a bad
> coolant sensor has the potential to cause excessive fuel consumption, poor
> cold idle, and even stalling. Like I stated in the beginning, the cold start
> ups are nasty and rough, and there are NO fault codes coming up when I do
> the key on/off cycle. Oxygen sensor was replaced about 23,000 miles ago; the
> cold idle problem did not change and was present beforehand. Any ideas?
> Kyle
> 93 Dakota 4x4 V6
>
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