I have a 1995 Defender 90 that will occasional missfire for a split second while cruising around 2000-2500 rpm. It has new spark plugs, wires, O2 sensors, and an ignition module. The ECU is not giving me any codes. Any sugestions?
I recently installed headers and new oxygen sensors to. The ECU was telling me that I had a bad oxygen sensor. I just replaced the TPS with a used one, new one on the way, but still having the same mis. Its sparitic and I can't repeat it, just happens. How did you guys post your pic here?
Hi todd, I was having the same problem- replaced the alternator and a million other things. Ended up being the power wire to the electric fans I run was grounding out as it had worn through the protective sheath in one part. If you're running any high amperage accesories check all the wiring.
Found the problem, Igintion Module went out agian only 6 months old. I carry Ford black box for a spare this time I'm wiring it in for good! $16.99 vrs. $139.00. The hedders work good but alot of work to install and kiss the cats goodby. The hedders are for the 3.9 HED-39800
This is how it is wired:
Distributor wire blue connect to orange wire duraspark box
Distributor wire red connect to violet(purple) wire duraspark box
Red wire from duraspark box to postive key on igintion.
Black wire from duraspark conect to Ground.
Green wire from duraspark conect to negative side of coil.
White wire from duraspark box optional hook up to solenoid wire from starter, for easier starting. Make sure the box is grounded good.
This gives you an alternative to the problamatic Lucas module that Land rover has had problems with from the begining! Land rover uses a variable reluctance magnetic pickup distributor and guess what, so does the Ford duraspark distributor.
Please notice the changes. The Duraspark box fires on the rising edge of the signal. If your Land Rover original box
fired on the falling edge then the polarity will be reversed, meaning blue goes to orange and red goes to violet(purple). Be sure to check timing when finished!