# Group 13 Fuel Supply Service Bulletins

#### Bulletin number

#### Title

#### Description

#### Date of issue

13 06 83 (760) | Idle dips below specification with A/Con, 318i | In ambient temps above 90° F idle dips. Too much Freon® in system. Discharge until bubbles appear in sight glass. Recharge system, stop charging immediately that bubbles disappear. | August 1983
13 08 83 (776) | Idle speed problem with AC, 318i | Replace if date code is prior to 7.83 | October 1983
13 09 83 (778) | Altitude correction 318i/A | Warning not to interchange 5 and 3 series sensors | October 1983
13 08 84 (867) | Idle control valve air supply hose becomes disconnected | 318i prior to 3/84 can pop off hose if started with gas pedal depressed. | July 1984
13 03 85 (1031) | Recall Campaign 85V-058 Idle control valve | 84 318 change idle valve produced before 12/83 | July 1985
13 04 85 (1036) | Engine surging-AC clutch rapidly engage/disengage | AC system may be overcharged from factory | May 1985
13 07 85 (1058) | Poor initial driveability, hot engine with AC on. Prior to 1/85 production 325e | Remove brown / red wire, pin 11 , from idle control unit | June 1985
13 08 85 (1062) | Fuel pump relay, 318i 12/84 - 4/85 start no run | Replace relay dated 7466-0985 to 7466-2885 | August 1985
13 09 85 (1066) | Idle control air supply hose disconnected 318 prior to 3/84 | Caused by starting car with throttle pedal depressed, check and replace DME, idle control valve an install clamp on supply hose | July 1985
13 11 85 (1073) | Poor throttle response on acceleration, hot engine | Install restrictor 89 88 2 000 000 in purge line from charcoal canister to throttle housing. | July 1985
13 12 85 (1067) | Rough idle , 1984 325e | Install purge control valve 11 63 1 707 770 in line between charcoal canister and throttle housing | July 1985
13 14 85 (1101) | Plastic idle control valve adjustment 318i | Valve out of spec, turn screw in end of valve to raise mA value to 460 at 850 rpm , or 470 at 750 rpm in automatic | December 1985
13 15 85 (1105) | Installation lubricants for fuel injectors | Use SAE 80 or 90 Gear oil only | January 1986
13 01 86 (1153) | Electric Fuel Pump Inoperative | Residue from fuel hoses, replace pump, do not replace hoses | February 1986
13 03 86 (1158) | Exchange of idle control unit. | 86 Engine campaign, change to unit with green stripe | May 1986
13 04 86 (1159) | Recall Campaign 86E-A01, Emissions | Change idle control unit or check wiring at connector. | May 1986
13 05 86 (1160) | Installation of 680 Ohm resistor and temp switch | Prior to 10/84, add 680 Ohm resistor to temp switch for DME | May 1986
13 08 86 (1176) | Fuel Injector Cleaning Procedure | Cleaning Carbon from Injectors | May 1986
13 09 86 (1179) | Engine campaign procedure for idle control system modification | Used in conjunction with 86 Engine campaign book to perform updates | May 1986
13 10 86 (1184) | Engine campaign procedure for adjustment of ICV on M20B27 engines, 1984 - 1986 | Used in conjunction with 86 Engine campaign book to perform updates | May 1986
13 11 86 (1191) | DME main relay, 325 occasional no start | Replace DME relay with P/N 12 63 1 708 646 | October 1987
13 15 86 (1243) | Use of constant current generator | Use of BMW tool to diagnose idle valve problems | August 1986
13 17 86 (1260) | 680 Ohm resistor / 70°C temp switch kit | To fix hard starting after SI 130586(1160), replace temp switch | October 1986
13 18 86 (1264) | Fuel injector balance test | If 86 engine campaign does not clear up rough idle or poor performance, check fuel injectors for equal supply. | September 1986
13 21 86 (1295) | Idle speed fluctuation | Cracked vacuum line from manifold to fuel pressure regulator | August 1987
13 01 87 (1345) | 325i/iC 12/86 Hard start | Replace charcoal canister due to loose particles jamming purge valve open. | April 1987
13 02 87 (1348) | M3 Idle mixture check and adjustment | Details procedure for setting mixture after major work | April 1987
13 03 87 (1351) | Troubleshooting Lambda control system, Motronic 1.1 | Warns to check for other problems causing mixture problems and setting O2 faults | April 1987
13 04 87 (1452) | Idle speed and mixture, Motronic 1.1 | Advises not to touch airflow or idle valve adjusting screws. If idle or mixture is bad, fix the problem, don't compensate for it. | August 1987
13 01 88 (1564) | Gasoline Fuel Quality Recommendations | Discusses fuel ratings for various engines | November 1989
13 02 88 (1586) | Recall Campaign 88V-031 1988 325iX | Check clearance between dipstick and throttle lever | March 1988
13 03 88 (1589) | Idle speed fluctuation 318i, 325e | Idle valve out of adjustment, introduces new tool for checking value of idle valve | February 1988
13 04 88 (1591) | BMW gasoline additive 88 88 6 900 312 | Use it to prevent carbon deposits, unless fuel used already has additives | February 1988
13 07 88 (1700) | M3 engine "dieseling" | install updated purge relay 13 90 1 311 722 | August 1988
13 08 88 (1718) | On board diagnostic flash code chart | SD 89-005 flash code card valid to 89 model year | February 1990
13 03 89 (1908) | Correct fuel injector application M20B27 with M1.1 | Must use injector number 13 64 1 726 989, white connector , yellow tip | August 1989
13 03 90 (3039) | Evaporative Purge Valve M20B25 | Rough idle, check engine light, check for crack in molded purge valve hose. | July 1990
13 04 90 (3040) | Recall Campaign 90E-A01 | Failure of some 86 and 87 325e vehicles to comply with CA law. Change EPROM | July 1990
13 06 90 (3083) | Air intake boot 318 with M42 until 8/90 production | Install stainless steel support ring to prevent intake boot from collapsing under high vacuum. | June 1990
13 09 90 (3141) | Throttle potentiometer 318 M42 | Rough idle, check engine light, code 12. Improved throttle switch, date code above 2190X to be installed | December 1990
13 03 91 (3290) | Adapter harness for air flow meter M42 | From 2/90 to 12/90 install P/N 13 62 1 734 516 adapter harness between AFM and factory harness | July 1991
13 06 91 (3440) | Recall campaign 91V-219 : Throttle housing, 1991 and 1992 M42 | Replace throttle housing with P/N 13 54 1 739 263 to prevent freezing from moisture in purge line during cold start | April 1992
13 03 92 (3589) | Engine compartment return fuel hose | New hose and clamp styles | July 1994
13 02 93 (3735) | Recall Campaign 94V-066 : Fuel hose | M20 and M42 engines, replace feed hoses in engine compartment | July 1994

E30 M3 Repair Manual V2.7. Copyright ©1999-2001 Koala Motorsport & Brett Anderson