Car stalls while driving
tech answser. see bar room , at end......
only hot engine. (engine options size not stated)
there is a simple cheap tool to use in each step below.
the ignition switch bad, would have killed many things on the dash
at stall, so was not it... guessing is expensive.
there are in fact 50 ways to stall and engine. huge list. nobody guesses all 50 one by one, we do what is called testing and diagnosis.
no year stated, so all anwers are generic but correct.
not in order, (cept a good engine is first) failures are mostly random.
ill state the one item no random (a tune up , ever get one? the 60kmile interval tune up , if not, fail, no car runs 300k miles with none.
1: bad 12vdc power, loss of battery power, you see lamps and dials on dash and radio or what ever go dead at the stall , the be lost DC power .
2 : bad engine, engines can run perfect cold and fail hot.
one is, a valve not sealing hot , and compression lost on 1 or more cylinders. (this is first and after bad DC power, the rest below is useless to help hide this gross failure.
3: bad spark, (tune up time)
4: bad fueling.?
A: too much fuel flooding. spark tips soaked in raw fuel, 1 or all 4 or 6.
B: too little , (tune up person forgot to change the fuel filter,? really>?
too little, low fuel pressure.
C;leaking or clogged injectors.
4: EGR sticking open can happen at most traffic stops .
clean it, (again a standard sevice check)
5: ISC stuck closed, clean it. (you discovered that the fast right foot
saved the stall, easy, bingo loss of air, ISC stuck closed, hot.
there are more test. but this is the lions share, we find what of the
3 paths are failing, engine,spark and fuel.
btw: the EFI cuts fuel if it even suspects spark is failed. !!!
1: tune it up this decade? "called doing service points now......."
2: EGR clean
3: ISC stuck closed.
can you save the stall, ? with right foot actions. Y/N
Dec 14, 2013 |
Acura CL Cars & Trucks