Zerocygnal
20+ Year Contributor
- 641
- 1
- Jul 1, 2002
-
Springfield,
Ohio
I just wanted to have a few extra ideas on places to check out my problem.
Nothing other than a brake upgrade, and a hacked air can have been done in the last week. Just recently after those two mods I noticed that while in 2nd gear floored my boost sits at 8psi (Per factory gauge mind you...) and then once I hit 4200RPM the boost slowly creeps to 12psi giving me the power I originally had. 3rd Gear does the same thing except at 4500RPM every other gear seems to have normal boost ranges.
My only theory is that the wastegate probably has carbon build up all over it and is sticking slightly. I checked the Wastegate actuator, BOV, and BCS with the vacumn pump as per the manufacturers testing instructions in the shop manual. All 3 of these sub-systems are normal.
I might also add that the idle increas to 1200RPM for about a minute then resumes factory idle while stopped.
1992 Eagle Talon TSi 4G63 14b Turbo
123,235miles
All fluids flushed and topped off
Sparkplugs, wires, fuel filter, air filter, and all gaskets and vacumn hoses were replaced 1000miles ago.
All sensors tested and running within acceptable ranges.
Any ideas?
Hope I gave enough info...
Nothing other than a brake upgrade, and a hacked air can have been done in the last week. Just recently after those two mods I noticed that while in 2nd gear floored my boost sits at 8psi (Per factory gauge mind you...) and then once I hit 4200RPM the boost slowly creeps to 12psi giving me the power I originally had. 3rd Gear does the same thing except at 4500RPM every other gear seems to have normal boost ranges.
My only theory is that the wastegate probably has carbon build up all over it and is sticking slightly. I checked the Wastegate actuator, BOV, and BCS with the vacumn pump as per the manufacturers testing instructions in the shop manual. All 3 of these sub-systems are normal.
I might also add that the idle increas to 1200RPM for about a minute then resumes factory idle while stopped.
1992 Eagle Talon TSi 4G63 14b Turbo
123,235miles
All fluids flushed and topped off
Sparkplugs, wires, fuel filter, air filter, and all gaskets and vacumn hoses were replaced 1000miles ago.
All sensors tested and running within acceptable ranges.
Any ideas?
Hope I gave enough info...