98 Honda Civic LX (D16Y7 engine TEC Dist.)

beShadeTree · #1 May 20, 2007, 02:05 PM

Problem:
Engine runs but misfires on Cyl. 2 & 4. Fault Codes P1399, Misfire #2, Misfire #4.
Car was driven @ 45 mile in this condition, no power, engine shudder, CEL on for @ 30
seconds then flashing. Tach. working. Problem developed on morning start-up on 5/18

Testing Performed:

Drop Test - Cyl #1 engine dies, Cyl #2 no change, Cyl #3 engine dies, Cyl#4 very
minor change. Good Spark at all cylinders.
K-Test - (4.88Vdc) at MAP connector.
Coil Test - Ohmed out within Specs.
ICM Pwr. Test - 12Vdc on Blk/Yel wire. Continuity on Blk/Yel, Yel/Grn, Blu back to
connector. All three wire checked open to ground.

Parts Replaced:
Plugs - Very minor improvement engine still misfiring CEL flashing after 30 sec
Rotor - Very minor improvement engine still misfiring CEL Flashing after 30 sec
Cap - Very minor improvement engine still misfiring CEL Flashes after 30 sec
ICM - Engine runs rougher still misfiring CEL flashing after 30 sec

Question:
Could Timing Belt have jumped. It was replaced about a month and 1,000 miles ago?
On Compression Stroke what is the relationship between reluctor and pick-up at TDC?

I would appreciate any help with this problem. I'd really like to be sure all alternatives have been checked before replacing ECM. For lack of knowing what else, I plan to replace the Coil.

Thank you for your help

beShadeTree · May 20, 2007, 06:41 PM

Thanks for the info. Forgot to say I'd ohmed plug wire. They are in spec.

beShadeTree · May 23, 2007, 05:02 PM

Wahoo it's fixed!!!!

Just some useful information.

I know hind sight is 20/20 but, I wished I'd known. A brand NEW tested and ready to go distributor can be purchased for $220.00 from Roy Rogers Foreign Car Parts. I spent @ $180 foolin with the old one. I didn't want a remanufactured one. Once you cook(heat exposure) electronics they are going to fail. Heat is the main killer of all electronics.

The Distributor I got is a Richporter Technology. No used or reman. parts.



At Ask Me Help Desk you can ask questions in any topic and have them answered for free by our experts. To ask questions or participate in answering them you must register for a free account. By registering you will be able to: Get free answers from experts in any of our 300+ topics. Accept money for answers that you provide. Communicate privately with other members (PM). See fewer ads. Sign Up!