need help
12-25-06, 05:29 PM
#1
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need help
I have my car in the shop right now at jerry little car shop in kent and atkins recommended them so i trust them but he is having a problem finding the issue with my car. The problem is that i will have i have boost and then i shift and the boost will begin to build again and then when i get to 6000 rpm the car sputters and then my car is usless after that. If i shift and let the rpms drop down to about 2000rpms then gun it ill have boost all the way to redline. Also if i get on it lets say in 4th gear and i left off and then get back on it i get no boost. This is such an aggrivating problem any help would be great thank you.
12-25-06, 06:04 PM
#4
What is the boost reading when it cuts out and sputters? Is there any chance the main cat element is breaking apart?
The lack of boost and sputtering sound like different issues. Most cars when they have a boost problem don't sputter at all - they just get down to 0 psi and lack power. For the boost issue, I would change out the check valves if they haven't been changed before.
Dave
The lack of boost and sputtering sound like different issues. Most cars when they have a boost problem don't sputter at all - they just get down to 0 psi and lack power. For the boost issue, I would change out the check valves if they haven't been changed before.
Dave
12-25-06, 07:06 PM
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Originally Posted by scotty305
High RPM sputtering makes me suspect an ignition issue. How old are your spark plugs and wires?
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12-25-06, 07:07 PM
#8
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Originally Posted by dgeesaman
What is the boost reading when it cuts out and sputters? Is there any chance the main cat element is breaking apart?
The lack of boost and sputtering sound like different issues. Most cars when they have a boost problem don't sputter at all - they just get down to 0 psi and lack power. For the boost issue, I would change out the check valves if they haven't been changed before.
Dave
The lack of boost and sputtering sound like different issues. Most cars when they have a boost problem don't sputter at all - they just get down to 0 psi and lack power. For the boost issue, I would change out the check valves if they haven't been changed before.
Dave
12-25-06, 07:49 PM
#9
Racing Mechanic
what about the blow off or bypass valves? , check that.
And check turbo hoses, if you still have the original secuencial setup chech the hose that is just after the Y of the 2 turbos.
It can be the exhaust manifold gaskets too.
Or the wastegate diafragm can be too
And check turbo hoses, if you still have the original secuencial setup chech the hose that is just after the Y of the 2 turbos.
It can be the exhaust manifold gaskets too.
Or the wastegate diafragm can be too