240 L4-2320cc 2.3L SOHC VIN 83 B230FD (1993)
Technical Service Bulletin # 228102
Date: 970701
Engine Performance - Poor Driveability
SECTION
2
GROUP
28
N0.
102
DATE
July 1997
RE:
MFILH E Prom Exchange for Cold Start Symptoms W/ Low RVP;
1989-93 LH2.4 B230F
1990-93 LH2.4 B230FT
REFERENCE:
TP 32043/1 (ENGLISH); 3/93; MFI SYSTEM LH2.4; DI SYSTEM EZ116K
TP 32394/1 (ENGLISH); 6/93; ENGINE MANAGEMENT SYSTEMS LH2.4; EZ116K
SHOP EQUIPMENT # 18; 6/93
SMB 23-26; 8/93
SB 28-205/906; 3/93
Multi-port fuel injection (MFI) LH2.4 E PROM exchange for cold start symptoms with low volatility fuel
BACKGROUND:
Some of the low volatility fuels (also known as low RVP fuels) now used during the May-September time period suffer from decreased mid-range
volatility. This decreased mid-range volatility can result in the need for repeated cold start attempts in ambient temperatures ranging from 60-85°F
(16-27°C).
SYMPTOMS:
-
The engine starts OK, but stalls almost immediately, requiring a restart attempt.
-
A drop in idle RPM or stall when a drive gear is selected. Also hesitation during first 45 seconds of operation.
-
The condition began in May, and only occurs within the first 45 seconds after a cold start only, not on a warm engine.
-
The engine starts ok but does not idle smoothly until warmed up, especially on early 1993 240s; see Notes.