2.2/2.5L Eng Slow Return To Idle - Logic Module/SMEC (18-11-88)

Publication date: 1988-03-28
Reference number: 18-11-88

2.2/2.5L ENG SLOW RETURN TO IDLE - LOGIC MODULE/SMEC

TECHNICAL SERVICE BULLETIN

Reference Number(s): 18-11-88, Date of Issue: March 28, 1988

ENGINE PERFORMANCE - SLOW RETURN TO IDLE

Models: 1987 Chrysler/Dodge K-E-G-J-H-P Bodies With 2.2L & 2.5L and 1987 S-Body With 2.5L Engines, Reliant/Aries/LeBaron/Town & Country /Caravelle/ 600/New Yorker/Daytona/Lancer/LeBaron GTS/ Sundance/ Shadow/Voyager Ram Van/Caravan

Bulletin No.: 18-11-88

Group: Engine Performance

Date: March 28, 1988

Symptom: Slow Return to Idle

SYMPTOM/CONDITION

Slow return to idle between shifts on manual transmission vehicles or long deceleration on automatic transmission vehicles. Noticeable only in cooler ambient temperatures.

DIAGNOSIS

This condition will occur on first start after an overnight soak, where vehicle is driven without ever coming to a complete stop for more than two (2) seconds. Drive vehicle and try to duplicate condition without coming to a full stop. If condition occurs, stop vehicle for more than two (2) seconds and try to repeat condition. If condition cannot be duplicated, perform repair procedure.

PARTS REQUIRED

Before ordering the revised logic module or SMEC, it will be necessary to identify the logic module or SMEC that is on the vehicle. This is necessary for emission compliance.

PARTS APPLICATION

Vehicle Application	Previous Parts Number	Revised Part Number
2.2L Manual	5227778	5234095
With Air	5227886	"
Federal	5233384	"
Passenger Car	5233531	"
2.2L Manual	5227780	5234097
Without Air	5227888	"
Federal	5233386	"
Passenger Car	5233534	"
2.2L Manual	5227589	5234099
California	5227884	"
Passenger Car	5233380,5233537	"
2.2L Automatic	5227579	5234085
Federal	5227880	"
Passenger Car	5233376, 5233527	"
2.2L Automatic	5227581	5234089
California	5227882	"
Passenger Car	5233374, 5233529	"
2.5L Manual	5227796	5234091
Federal	5227860	"
Passenger Car	5233362, 5233509	"
2.5L Manual	5227567	5234093
California	5227862	"
Passenger Car	5233364, 5233512	"
2.5L Automatic	5227561	5234087
Federal & California	5227745, 5227856	"
Passenger Car	5233002, 5233372, 5233506	"
2.5L Manual	5227654	5233094
Federal & California	5233424, 5233489	"
Truck	5233582	"
2.5L Automatic	5227652	5233092
Federal & California	5233422, 5233496	"
Truck	5233580	"

REPAIR PROCEDURE

This repair involves replacing the logic module or SMEC (single module engine controller) with a revised one.

Remove old module and install new module.
Type the Authorized Modification Label, PN 4275086, as shown in Figure 1 and attach near the VECI label.

Fig 1: Authorized Modifications Decal