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Re: Can my car be killing BPC valves? Posted by SWEDECAR [Email] ![]() ![]() ![]() In Reply to: Can my car be killing BPC valves?, RupertG, Wed, 16 Feb 2005 18:32:24 Members do not see ads below this line. - Help Keep This Site Online - Signup |
A bad BPC valve can damage a good ECU.
A damage ECU can kill a good BPC valve.
There you have it.
It still might be that you have gotten bad used valves and it might not be anything wrong with the ECU?
The ground signals from ECU to pin 1 and 3 on BPC valve needs to be checked to see if they are acting up.
This is best done using a lab scope to study the PWM signal from ECU.
You want a steady pulse signal on both sides when driving the car that is only altering in length depending on what turbo boost demand the car needs.
If the signal goes to full ground at some point it could either be one of the wires shorting to ground or that the ECU is doing a hick up and demand the valve full open or closed. This could fry the valve.
Anders
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