Engine - Lack of Power/Low Turbo Boost

Article No. 86-24-19

LACKS POWER ON ACCELERATION
- 2.3L TURBO - MANUAL TRANSMISSION


TURBOCHARGER - 2.3L - MANUAL TRANSMISSION - LOW BOOST PRESSURE

FORD 1985-86 MUSTANG SVO; 1985-87 THUNDERBIRD

LINCOLN-MERCURY 1985-86 COUGAR

MERKUR 1985-87 XR4Ti

Lack of power on acceleration and low turbo boost pressure may occur on Thunderbird/Cougar, Merkur XR4Ti and Mustang SVO units with the octane switch in the regular or premium position and with the throttle fully open. A lower than specified turbo boost pressure (such as 10 psi or lower) may be caused by mis-routed boost control solenoid hoses. To correct this, reroute turbo boost hoses using the following procedure:

1. Confirm that the low boost pressure condition exists using the Engine/Emissions Diagnosis manual, Volume H, (Car/Truck) Section 22, page 22-34 for Pressure Test Kit Hook-Up.


NOTE: Also see Boost Pressure Table, Ref. TSB 86-6-16 or the Car Shop Manual (Powertrain, Lubrication, Maintenance, Section 24-47).

Figure 13:

2. Check to see if the Turbo Boost Control Solenoid hoses are correctly connected. Proper hose routing and location are shown in Figure 13.

3. If hoses are reversed, disconnect them and reinstall. Secure hoses with two (2) 3/8 inch hose clamps (C9AZ-8287-A) as described in Figure 13.

4. If the Turbo Boost pressure is still below the specified value, perform the Pinpoint Test for Turbo Boost Control described in the Engine/Emissions Diagnosis Manual, Volume H, Section 19 to diagnose the concern.

PART NUMBER PART NAME CLASS

C9AZ-8287-A 3/8" Hose Clamp AG

OTHER APPLICABLE ARTICLES: 86-6-16
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP9378A86
TIME: 0.4 Hr. DLR. CODING: Basic Part No. 9G438 - Code: P6