Engine - No Start/Hard Start In Freezing Temperatures

91ford19

Article No.
91-11-5

05/30/91


^ NO START/HARD START - 5.0L - BELOW FREEZING TEMPERATURES

^ STALLS - 5.0L - BELOW FREEZING TEMPERATURES


FORD: 1986-88 THUNDERBIRD
1986-91 CROWN VICTORIA, MUSTANG

LINCOLN-MERCURY: 1986-88 COUGAR
1986-90 TOWN CAR
1986-91 GRAND MARQUIS


ISSUE: Condensation may be drawn through the PCV hose that is connected to the throttle body above the idle bypass motor. The condensation may drip and accumulate water on the ISC motor freezing the motor closed.

ACTION: Reroute the PCV hose from the throttle body to the inlet side of the air cleaner. Refer to the following procedure for service details.

Figure 1:

1. Replace the nylon formed PCV tubing with 3/8" rubber fuel line (E1PZ-9324-A). Refer to Figure 1.

Figure 2:

2. Cap the nipple fitting on the throttle body, Using a 3/8" rubber cap (C9AZ-9C492-A). Refer to Figure 2.

Figure 3 - 91-11-5:

3. Drill a one inch diameter hole at a location through the dirty side section of the air cleaner so the filter-pack will not interfere with the air cleaner element or the upper half of the air cleaner box. This will assure proper assembly. Refer to Figure 3.

4. Install PCV filter-pack (E7TZ-9D695-A) inside the the air cleaner box.

5. Install elbow (384411-S) to filter pack assembly.


6. Install clip (D1AZ-9E628-B) to retain PCV filter pack.

7. Reroute this PCV hose from the throttle body nipple to the dirty side of the air cleaner. Refer to Figure 2.

NOTE: ROUTE THE 3/8" RUBBER HOSE TO AVOID ANY KINKS OR VALLEYS IN THE HOSE.

8. Connect the rubber hose to the elbow and filter pack assembly. Refer to Figure 1.

PART NUMBER PART NAME CLASS

D1AZ-9E628-B Clip AM
384411-S Elbow (Pkg. of 4) AM
C9AZ-9C492-A Cap Vacuum Outlet AM
E1PZ-9324-A Hose Fuel AM
E1TZ-9D695-A Filter Assembly PCV B

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under Basic Warranty
Coverage
OPERATION DESCRIPTION TIME
911105A Reroute PCV Hose 0.4 Hr.
DEALER CODING
BASIC PART NO. CONDITION CODE
9324 43
OASIS CODES: 602300, 603300, 607000, 608000