The truck starts but it wont stay running. as soon as you take your foot off of the gas. i checked all of my vacuum lines and had it tested to see why the check engine light was on and it came up a map sensor. i cant test it. but i was told to disconnect it and see how the truck ran without it.. can this be done without messing the truck up more? or any suggestions on anything else it could be?
Yes you can run the engine without the sensor, maybe.
When you disconnect the sensor the computer uses a signal or number preset in the computer memory. Sometimes the engine will run and sometimes not, but it won't do any damage either way.
A mechanic would test the sensor by using a meter and a vac pump. The sensor measures engine vac.
You could always try a used part.
SOURCE: Check Engine Light
almost any thing will bring the light on, like if you go get fuel and fill the tank with truck runing it will turn the light on
it does not mean than it is not safe to drive but you need to go to an auto repair and have them conect the scan tool to see what code is present i will recomend to take care of it because with the light on you might notice or get a decrease in gas mileage and fuel is so expensive now
SOURCE: 99 Dodge Ram 2500 4WD turns over, wont fire
I had a similar problem and believe it or not it was the CAT. An easy way to test for this is to remove the O2 sensor right in front of the CAT. Once you removed it, plug it back in while unscrewed from the exhaust pipe and start up the truck. If it runs fine, the CAT is your problem. This is just a guess and it would be an easy and very cheap($0) test. You did not say if the truck was diesel or gas. Mine is gas that was exhibiting the same problem as yours...good luck!
SOURCE: 1997 dodge ram 1500 stalls when driving
check vacuum hose into throttle body, also clean throttle body orifices and iac. remove iac [engine off] and have someone turn key to on to see if plu8nger works. just a thought .
SOURCE: Truck will not stay running without giving gas after a jump off
when the battery goes dead it looses its memory on engine settings like idle speed.. two things you can do first one is to clean the throttle bore with carb cleaner... the other is to start with foot on gas and slowly bring it back to idle... it will pick up the idle air position to keep itself running if you do it slowly... everything happens over time so as the throttle gets dirty the computer makes these adjustment on its own and when the battery dies it starts out basicly at different percentage of idle control tht it really needs because of the carbon buildup on the throttle plates
SOURCE: 1996 doge intrepid wont pass emission test because IM monitors ar
Just maybe your O2 sensors are not operating properly. They may be requiring your engine to heat them up to get upper temperature readings but not lower. You can easily diagnose these and all other sensors and problems by purchasing a Hains manual at your local Auto Zone or Advance auto store which will greatly aide you in diagnosing all your auto needs. And the fault symptom index at the beginning of the book will ease your troubles with professional one on one advice with step by step instructions. Its like having your own ASE certified mechanic at your finger tips. Good luck.
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