Low power and stalling
 

Hello
Everyday i use my svx at least twice.And the second time around, problems happen. WTF?
So today, I drove it for about 30 minutes, no problems at all. Three hours later, gotta go get my girlfriend at work. The car starts stalling when coming to a stop. Starts and drives fine after that.But it keeps losing power (i.e: turns completely off) when driving at stable speeds, but catches up right away if i push the gaz pedal... I heard my belts squealing, so I tighened the tensionner. But it still stalls once in a while and keeps giving me less power than it should.
I don't understand why the car would drive fine for a full 1 hour ride, and then start giving me troubles.I am sure it's electrical.I found out that the guy who fixed my rad fans connected a wire from the positive of the battery to the fusebox. Also, I've tightened the battery connections since they were a little loose. that gave me 2 days of tranquility.then my problems came back.
I am getting tired of it.
Please help, I love this car, but it is becoming erratic.

Re: Low power and stalling
 

MAF? (Mass Air Flow Sensor)

Re: Low power and stalling
 

MAF. Exactly what mine did when the MAF failed.

Re: Low power and stalling
 

MAF. I agree!

Re: Low power and stalling
 

I have changed the maf last month. The problem is the car runs like it misses fuel sometimes, or doesn't burn its fuel properly.I should change the fuel filter I guess, and check the fuel pump..

Re: Low power and stalling
 

Did you change it to one that is known as being good? Because what you're describing is exactly how misbehaving MAF's act.

Re: Low power and stalling
 

Is the Check Engine light on at any time or have you looked for history codes yet? I would start here

Tom

Re: Low power and stalling
 

Bad ground maybe?There are no lights on the dash, I tryed getting the codes yesterday, but I'm doing something wrong..Forget the maf, its good.Also, I hear some switch or relay flicking quickly for a few seconds at a time behind the dashboard.Seems to me like a bad connection somewhere..

Re: Low power and stalling
 

Sounds like the main relay going balistic. Check the gnd at the rear of the intake manifold on the passenger side. It might look tight and clean. Take it off and clean it again. Tighten it back down and I think you will be OK

Tom

Re: Low power and stalling
 

awesome, will do that tonight.Sounds like it could be the solution to a few problems.Like yesterday, it misfired on one cylinder for a few seconds, then it was ok again..

Re: Low power and stalling
 

what about the sensors under the intake manifold? my sisters svx is doing the same thing. when i took the manifold off i noticed one of the sensors broke then when i put it all back without the sensor, the car started to have the same symptoms. i still need to get them ordered...

Re: Low power and stalling
 

That would probably be a knock sensor and if you remove one, it will cause the ecu to greatly retard the timing of the motor and cause it to run poorly as it is not getting the proper signal.

Re: Low power and stalling
 

I believe the more acceptable way to say this is "mentally disabled" the timing. Sheesh! :lol:

Re: Low power and stalling
 

Wouldn't a bad KS give me a check engine light??

Re: Low power and stalling
 

Yes and no. It is possible for the sensor to be cracked (plastic case) and it won't throw a code but it will cause the sensor to read wrong or different than what it should.