Fuel - Hard Starting/Rough Idle After Temp. Switch Kit
86BMW05GROUP 13 Fuel System
Bulletin Number 13 17 86 (1260) Page 1 of 2
Montvale NJ October 1986 Technical Dept.
SUBJECT: 680 OHM Resistor/70~C Temperature Switch Kit (P/N 12 62 9 058 579)
MODELS: 325e, 528e (prior to 10/84)
Complaint: Hard starting and rough idle after installation of kit (S.I. 13 05 86 (1160)).
Cause: 70~C Temperature switch inoperative (infinite resistance).
Correction: Replacement of temperature switch.
Parts: Individual temperature switches can be ordered from the PDC's under P/N 12 62 1 713 456.
Procedure: Switch Identification Guidelines Individual switches and switches in kits that have a white paint dot between the two terminals have been tested by the vendor and are OK. Switches will continue to be tested by the vendor, but the white paint dot marking will be discontinued at the end of December 1986.
All switches supplied during 1986 without the white paint dot marking must be checked for proper resistance (680 ohms) before replacement or installation.
A) For vehicles with kit installed
- Check the resistance of the switch with an ohmmeter. If resistance is infinite ("open" circuit) the temperature switch must be replaced. Proceed as follows:
WARNING: Open the radiator cap only when the engine has cooled down and the coolant temperature needle is on the lower third of the scale.
^ Remove the radiator cap from the expansion tank to depressurize the cooling system.
^ Screw the radiator cap back onto the expansion tank.
^ Replace the temperature switch in the "T" piece according to the guidelines mentioned above.
(Tightening torque: 25-30 N-m/18-22 ft.lbs.)
^ Bleed the coolant system and check the coolant level. Add coolant if necessary.
B) For vehicles in which kit is going to be installed
- Before installation, check the temperature switch for the white paint dot or the proper resistance (680 ohms). Replace the temperature switch in the kit if necessary with a new switch that has the proper resistance of 680 ohms.
Warranty
Status: Reimbursable under the provisions of the BMW Limited 3 Year/36,000 Mile Warranty.
Defect code: 00 00 13 72 00
Labor allowance:
A) Kit not yet installed Checking for the white paint dot or the resistance as well as possible replacement of the switch is already covered in the labor operation for installing the kit (S.I. 13 05 86 (1160).
B) Kit already installed
Labor operation: 12 63 060
Labor allowance: 15 min.