Just stops running while driving down highway, replace4d battery, by dealership , now they say throttle body is bad. I read crankcase sensor
The crankshaft sensor can cause instant engine shut down when it fails. Did the dealership check for fault codes?
SOURCE: 1994 gmc safair 4.3 wont run at idle and bad
Is the "service engine" light on at all?
If so, what codes are present.
Have you checked the EGR valve. If the valve is stuck, the engine will idle very poorly. You can remove it and clean the carbon deposites and make sure it moves freely.
The EVAP purge solenoid will also cause an idle problem but should show up as a service engine light problem.
Let me know.
Regards,
SOURCE: 1987 Chevy Suburban 350 2wd not starting or running right
What size engine do you have in it? And, how many miles on it?? Well, I guess it really doesn't matter. At first thought it sounds like you are experienceing a fuel problem, and changing the throttlebody didn't solve your problem. I would start by looking and checking my fuel delivery system. The fact that you had to spray gas into the throttlebody tells me that fuel is not getting there. I would start with the least expensive thing to fix first. Check your gas filters. These are often , OFTEN, overlooked as a sorce of problems, and are rarely changed and often overlooked, and are the problem alot of the time. If that dosen't cure your problem check your fuel pump. Make sure it is delivering the proper pressure. I would bet your problem would be solved, but if it's not then next I would check the electrical components of your fuel system.
SOURCE: right off idle truck stumbles and will die if you
its time to stop wasting money guessing and verify if parts are good/ bad. ck fuel pressure, and check the tps (Throttle Position Sensor) , see if it runs better with the EGR valve disconnected. If it does, replace it Use only AC DELCO parts they will need number off old EGR valve usually starts with 17------. NOT from ottozone or others.
SOURCE: i have a 88 gmc
the idle air control actuator is a common problem in this type of fuel injection an is mounted in the throttle body also the map sensor should be on top of intake make sure is connected right and have full vacum if so just tap on it with engine running and will miss if it is faulty please let me know if this helped or need further assistance i'll be glad to help.
SOURCE: 2002 gmc envoy stalls when turning and slowing down
I am going to assume the check engine light is not on.
I would check the throttle body to see if it needs to be cleaned, and check the idle air control valve to see if it is working. The computer controls idle speed by the amount of air coming into the throttle body.
The ac problem is probably something different such as low freon or a cooling fan problem.
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