Stutters below 3000rpm
12-20-2007 | 08:10 PM
#11
Member
Joined: Dec 2007
Posts: 40
Likes: 0
From: Frederick, MD
Below are how to steps from AutoZone Repair Info sites:
1. First check that all vacuum lines and electrical connections are in good condition.
2. Disconnect the vacuum supply hose to the EGR valve and connect a hand vacuum pump to the valve.
3. Disconnect the vacuum supply hose to the EGR valve and connect a hand vacuum pump to the valve.
4. With the engine at idle, draw a vacuum on the EGR valve. The engine should stall (or run very rough) and the valve should hold vacuum. If not, replace the EGR valve.
5. With the engine at idle, draw a vacuum on the EGR valve. The engine should stall (or run very rough) and the valve should hold vacuum. If not, replace the EGR valve.
6. The vacuum going to the control solenoid valve should be about 8 in. Hg (200 mm Hg) at idle. Connect a vacuum gauge to the hose coming from the air chamber. If the vacuum is not correct, read the vacuum at the CVC valve outlet. Full manifold vacuum should be available at the CVC inlet. If the air chamber or CVC valve is are not functioning properly, the units must be replaced.
1. First check that all vacuum lines and electrical connections are in good condition.
2. Disconnect the vacuum supply hose to the EGR valve and connect a hand vacuum pump to the valve.
3. Disconnect the vacuum supply hose to the EGR valve and connect a hand vacuum pump to the valve.
4. With the engine at idle, draw a vacuum on the EGR valve. The engine should stall (or run very rough) and the valve should hold vacuum. If not, replace the EGR valve.
5. With the engine at idle, draw a vacuum on the EGR valve. The engine should stall (or run very rough) and the valve should hold vacuum. If not, replace the EGR valve.
6. The vacuum going to the control solenoid valve should be about 8 in. Hg (200 mm Hg) at idle. Connect a vacuum gauge to the hose coming from the air chamber. If the vacuum is not correct, read the vacuum at the CVC valve outlet. Full manifold vacuum should be available at the CVC inlet. If the air chamber or CVC valve is are not functioning properly, the units must be replaced.