Rep Power: 0

Hello I have the civic with only p1399 code new whole distributor and ngk wires 10k new cap and rotor and fuel filter ngk g power plugs 1k all injectors are working misfires cel flashes thru second gear then runs fine ..after market intake/ exhaust wondering how.often the pick up coil in.the distributor goes or if the crank sensor is taking a s**t but have no other codes other than the p1399 any other help.appreciated.. sorry if there is already a thread on this but new to.the site don't know how to navigate it good..

 
Rep Power: 518

P1399 is a random misfire code.

Try a different code reader, there are usually more specific misfire codes stored along with a P1399.

Figure out which 'hole' is dead or weak, if it's running bad at idle this should be easy to figure out

intake gasket leaking?

Compression test?
Inspect plugs?

 
Rep Power: 0

Brand new plugs properly gapped no leaks that I see at all .. that's. The only code present.. and idles perfect

 
Rep Power: 518

Compression test?

How about the old plugs you just removed, what do they look like?


At what point is the CEL flashing....or maybe How do you have to drive to make it act up? Light throttle, steady speed, or mash the gas to the floor, or what? Describe.

Got freeze frame data that goes with the P1399 code?

Can you force it to misfire by powerbraking or throttle snap?




What kinda car is this?
99 Civic
what trim,
what trans
how many doors,
what country are you in?

 
Rep Power: 0

No compreeaion test cause its missing on all cylinders not one specific one on take off at any throttle until 2nd gear and its fine its an auto I'm in Minnesota USA. And don't know know what freeze frame data is 4 door old plugs were spot on little ashy but not fouled in anyway after 10 k its always been flawless it took the distributor out and tested the pick up for resistance after I put it back on today I backed the timing off to even out the dle when it was acting up.and the miss is no apparent but spits and sputters a lil on take off ..