Question about Cars & Trucks
The indicador has 120*C,is it normal?
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Posted on Jan 02, 2017
Hopefully i can point you in the right direction mayeb even offer a solution,
Generally i have foudn that when this happens its mainly due to a vacuum leak somewhere in the system. Check all the small rubber hoses in and aroudn the intake manifold.
If they are all non perrished and in good condtion it coudl be something else such as a clogged injector, However there are soo many possibilities and problems that it could be.
With cars the main problem is that sometimes its a few different things causing the one problem.
Has the car been tuned recently/Serviced.
Generally if air filters /fuel filters are blocked and dirty they can also help cause hunting in engines.
It could also be that you throttle linkage is sticking. This is common in older cars as dirt grease and oil builds up on the engine and can stop linkages moving correctly,
You coudl try following the wire that runs to the accelerator/gas pedal to the butterfly and try cleaning and lubricating with a reputable spray on lubricant that wont attract dust on all the linkages carefully and see if this helps .
Other common problems may be timing chains/belts, If they need replacing they tend to cause spiraddic idle as well although generally it would be really bad all the time,
Sometimes however it can be a problem with the cars onboard computer, be aware that if your cars battery is running low on charge or is long past needing to be replaced this to can effect the computer and cause spiradic idle as the car trys to compensate revs to push more charge through the alternator.
I know its not really a definitive solution but i hope it helps save you takinng it to the mechanic.
Posted on Apr 03, 2009
are you sure you need the crankshaft position sensor changed. it is at the back of the engine i believe, but.....
check for a wet ecu first... read the note on e36...
the ecu compartment is under the windshield on the passenger side on E36
you gain acess to it under the hood....
this compartment gets wet, the ecu lays on a flat surface in that
the bottom side of the circuit board gets wet and starts corrosion.
remove the ecu, take the bottom plate off, clean the bottom of the circuit
board with alcohol and a soft tooth brush.
you should be able to see the signs of corrosion or conductive build up.
this gunk bridges solder points doing all sort s of wierd things to your
car, including false sensor readings from asc/abs controllers and other
all the way to engine failure and worst case burnt and shorted wiring
I'm on my 3rd ecu, took me and the repair boys a few years to figure this
BTW: i would get that ecu mounted above that flat surface, use some sort
of standoff to raise it so that it is not laying in the wet.
Posted on Feb 07, 2010
Hi if this is an auto, sometimes if it is not in parck correctly or the pack saftey switch is not working correctly this will lock the wheel untill it is put in park , try moving the stick from p to n a few times that might get it to work, if it is a manual type transmission, normally a few sharp pull downs one way should free it, this will be the security system not releasing the stearing lock "bolt" also if that does not work, try removing the couling from arround the wheel, using a small hammer ( smaller the better, we are not trying to knock it into next week ) and a couple of small light taps near and arround the middle of the barrel while pulling on the wheel and turning key ( help will be required unless you have 3 hands lol ) to do this...hope this helps...
Posted on Dec 03, 2010
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The fact that the ABS is OK means that the wheel speed sensors are OK. The sensors are the part of the system that get the most abuse, so it is good to eliminate them as suspects.
On a 1999, I think that you have a mechanical (cable-driven) throttle rather than drive-by-wire throttle. If so, the ASC has its own throttle just outboard of the regular throttle. If you don't see it, follow the air tube up from the air filter to the intake manifold. The throttle(s) are attached to the center of the intake manifold at the end of that air tube..
If your ASC has its own throttle, that means that you have an actuator and a little throttle cable running from the actuator to the ASC throttle. Since that is a moving part, it is subject to wear, dirt, and corrosion that interfere with motion. That makes this system the second suspect after wheel sensors. Check that cable for fraying and a full range of motion as it pulls the lever on its throttle. Unplug the control wire to the actuator and make sure that the connections are clean and tight.
I recently had an ASC light that turned out to be a hose clamp that was installed improperly and was interfering with the motion of the throttle arm on the ASC throttle.
Posted on Sep 22, 2011
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