Icuff4cash
Elite Explorer
- Joined
- February 22, 2016
- Messages
- 588
- Reaction score
- 24
- City, State
- Las vegas
- Year, Model & Trim Level
- 1994 aerostar awd
for a year,I've had a problem with the monster aka pug shuttle shaking when starting after being warmed up. I was told and I did the following. Clean map,replace map,replace oxy sen,used a can of sea foam green every month at fillup to clean injectors, now my buddy josh said maybe the temp sender. Well here's an old write up explaining my proble. What do you think. Van starts great cold. Once warm it fluids out and shakes for 10 seconds then fine until I shut it off again. Only in the summer is it bad.
#4
aerocolorado
Postmaster
Join Date: Apr 2001
Posts: 3,814
Both the Engine Coolant Temperature sensor (ECT) and the Engine Temperature Gauge Sensor are thermistors - temperature sensitive devices that change resistance with changes in temperature. The ECT is especially important as it sends temperature information to the computer "brain" (powertrain control module) which in turn uses that information to regulate how rich or lean the engine runs. Obviously, if the ECT is not functioning, the "brain" thinks the engine is always cold and thus keeps things in a rich state, wasting fuel. These sensors do slowly go bad over the years. There are charts whereby you can test their functionality based on ambient temperature and resulting resistance readouts, but I find greater ease of mind just to change it out if in doubt.
Those of you with low reading dashboard temperature gauges, suffer from essential the same problem, a poorly functioning sensor. These sensors have a single wire rather than the two wire, larger ECT sensor - and best of all they are dirt cheap, often going for around $5-6 at most parts stores. I drove around for several years thinking I had a really efficient cooling system as it never registered above "N". I had lots of heat but always a low reading. One day, it dawned on me the sensor might be the problem - it was. Now it reads dead mid range where its supposed to be.
Last edited by aerocolorado; 01-17-2008 at 07:06 PM.
#4
aerocolorado
Postmaster
Join Date: Apr 2001
Posts: 3,814
Both the Engine Coolant Temperature sensor (ECT) and the Engine Temperature Gauge Sensor are thermistors - temperature sensitive devices that change resistance with changes in temperature. The ECT is especially important as it sends temperature information to the computer "brain" (powertrain control module) which in turn uses that information to regulate how rich or lean the engine runs. Obviously, if the ECT is not functioning, the "brain" thinks the engine is always cold and thus keeps things in a rich state, wasting fuel. These sensors do slowly go bad over the years. There are charts whereby you can test their functionality based on ambient temperature and resulting resistance readouts, but I find greater ease of mind just to change it out if in doubt.
Those of you with low reading dashboard temperature gauges, suffer from essential the same problem, a poorly functioning sensor. These sensors have a single wire rather than the two wire, larger ECT sensor - and best of all they are dirt cheap, often going for around $5-6 at most parts stores. I drove around for several years thinking I had a really efficient cooling system as it never registered above "N". I had lots of heat but always a low reading. One day, it dawned on me the sensor might be the problem - it was. Now it reads dead mid range where its supposed to be.
Last edited by aerocolorado; 01-17-2008 at 07:06 PM.
