Motor cuts off when turbo works at full capacity
03-10-2002, 03:09 PM
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Motor cuts off when turbo works at full capacity
Hi,
I have a problem with the turbo when it works at full capacity: the motor has been cut off. I try to exlpain it to you: when I accelerate at full and when the turbo pressure is at full capacity on 0.9 bars, the motor stopped net, like when you take one's foot off the accelerator and you accelerate just after.
The blanket in the Wastegate had a little hole. So my mechanic had change it. I thought it was OK but these days it is the same problem. And there is something strange: after this intervention, the pression is going up more than 0.7 and 0.8 what it was before.
Has someone a solution about this problem?
Sorry for my english !
I have a problem with the turbo when it works at full capacity: the motor has been cut off. I try to exlpain it to you: when I accelerate at full and when the turbo pressure is at full capacity on 0.9 bars, the motor stopped net, like when you take one's foot off the accelerator and you accelerate just after.
The blanket in the Wastegate had a little hole. So my mechanic had change it. I thought it was OK but these days it is the same problem. And there is something strange: after this intervention, the pression is going up more than 0.7 and 0.8 what it was before.
Has someone a solution about this problem?
Sorry for my english !
03-10-2002, 08:03 PM
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Dim,
If you are not hitting the rev limiter, you are likely got a problem with your over boost protection switch.
I had the same problem on mine C2 Turbo a while back. The switch is not too expensive to replace. But there is no guarantee that it will cure your problem. You seem to run higher boost than stock too.
Good luck,
Sonny Vo
If you are not hitting the rev limiter, you are likely got a problem with your over boost protection switch.
I had the same problem on mine C2 Turbo a while back. The switch is not too expensive to replace. But there is no guarantee that it will cure your problem. You seem to run higher boost than stock too.
Good luck,
Sonny Vo
03-12-2002, 05:38 PM
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Hi,
Just a precision, it is a 1979 3,3l Turbo.
The motor's cut off is before the rev limit.
What is the "over boost protection switch" ?
Thank you. <img src="graemlins/c.gif" border="0" alt="[ouch]" />
Just a precision, it is a 1979 3,3l Turbo.
The motor's cut off is before the rev limit.
What is the "over boost protection switch" ?
Thank you. <img src="graemlins/c.gif" border="0" alt="[ouch]" />
03-13-2002, 12:53 AM
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Hi Dim,
On the back of your intercooler, left hand side, second from the left, there is a switch called Over protection switch.
This switch was designed to prevent your motor from damaging itself just in case of high boost level in your intake system.
Your car has modified boost level, is this correct? Normal boost for your car is .8 max.
This switch is known for not working very accurately. One way to confirm if this is your problem is to disconnect the wire from the switch and ground it temporary, then go out and drive it hard - full throttle.
If you don't have the cut off anymore, then that is your problem. It is cheap to replace this switch, but make sure you get one with higher pressure values.
Good luck,
Sonny Vo
On the back of your intercooler, left hand side, second from the left, there is a switch called Over protection switch.
This switch was designed to prevent your motor from damaging itself just in case of high boost level in your intake system.
Your car has modified boost level, is this correct? Normal boost for your car is .8 max.
This switch is known for not working very accurately. One way to confirm if this is your problem is to disconnect the wire from the switch and ground it temporary, then go out and drive it hard - full throttle.
If you don't have the cut off anymore, then that is your problem. It is cheap to replace this switch, but make sure you get one with higher pressure values.
Good luck,
Sonny Vo
03-19-2002, 11:00 AM
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Good news,
On the top of the Waste Gate, there's a screw which leans against the diaphragme with wich one I can to adjuste the turbo pressure.
So I have unscrewed it just a little and I have gone to drive. I found a tension of 0.8 and I didn't have no fuel pump cut.
I don't want to be delighted too early. I want to make other tests with the car during a warm weather. I will come to my mechanic too to say him your remarks.
I will tell you about it.
<img src="graemlins/jumper.gif" border="0" alt="[jumper]" />
On the top of the Waste Gate, there's a screw which leans against the diaphragme with wich one I can to adjuste the turbo pressure.
So I have unscrewed it just a little and I have gone to drive. I found a tension of 0.8 and I didn't have no fuel pump cut.
I don't want to be delighted too early. I want to make other tests with the car during a warm weather. I will come to my mechanic too to say him your remarks.
I will tell you about it.
<img src="graemlins/jumper.gif" border="0" alt="[jumper]" />