1991 BMW 735

  • Tiny
  • tony1263
  • 1991 BMW 735

Electrical problem
1991 BMW 735 6 cyl Two Wheel Drive Automatic 9000 miles

can you guys tell me how to test a 1991 735il ignition coil with a multimeter and how much is ohms the coil should have when it is good thank you very much

Do you
have the same problem?
Monday, November 30th, 2009 AT 6:24 PM

1 Reply

  • Tiny
  • Dr Loot
  • Expert
  • 2,332 posts

Ignition Coil Resistance & Secondary Voltage Check (535i, 735i & 735iL)
Measure primary coil resistance between Black wire terminal and Green wire terminal. Measure secondary coil resistance between coil tower and Green wire terminal. Connect engine analyzer to engine. Observe secondary coil pattern and voltage. Secondary voltage should be 6000-14,000 volts, with maximum deviation between cylinders not less than 3000 volts.
Ohms @ 68 F (20 C)ApplicationPrimarySecondary318i, 318iC & 318is.4-.8(1) 325i, 325iC, 325is & 525i.4-.8(1) 535i, 735i & 735iL.3-.58000-10,000(1)Secondary coil resistance on 525i, 318 and 325 Series cannot be measured.

Due to the high volume of no responses to posted questions, if you have not resolved your issue and you need further assistance, please respond.

Was this
Sunday, January 24th, 2010 AT 1:17 PM

Please login or register to post a reply.

Similar Questions