Replace the coil for number 3 cylinder.
From what you have done already,the e c m controls witch cylinder,fires,and when,I am afraid to say the e c m,is the problem,injector,and coils,have been changed,would lead me to believe this to be the problem.
replaced ecm,coils,plugs,wires,already
where is the control switch located
ok donald sense it only does this after warm up replace the lifters for that cylinder,make sure you prime them up with oil before installing.The lifters are most likely the problem
email me I will send u a pdf manual/[email protected]
replace the electrical wires to the coils ,if this does not fix the problem then start looking at lifter problems
replace cylinder number 3 primary electrical harness.
×
Did you ever figure this out? My Kia is doing this, misfire on cylinder 4 after it is driven for quite a while. New coil packs last year, plugs, wires, did plugs again last week. It runs good cold, so I didn't think it would be the injectors. I replaced the ECM, ran great for a week. Today was real hot, and it started misfiring again. It ran fine to dinner and back, and then I let it rest for 20 minutes and went to drive and ran horrible.
Check for corrosion on the coil wires...that was my problem.
2004 Marauder and 2003-2004 Mustang vehicles built before 12/19/2004 equipped with 4.6L 4V/5.4 4V engine may exhibit a runs rough, lacks power, and engine misfire, prompted by a MIL light and DTC codes P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, and P0316.
ACTION
Diagnose engine for engine misfire concern. If diagnostics determine an engine misfire which is characterized by leakage through exhaust valve(s), only replace the affected cylinder head(s).
SERVICE PROCEDURE FOR VEHICLES WITH RUNS ROUGH/MISFIRE CONDITION:
1. Perform relative compression check on all cylinders. If abnormal, check cylinder leakage and actual compression for "low" cylinders refer to Workshop Manual (WSM), Section 303-00.
2. If leakage/compression check indicates a valve train concern, per valve train diagnostics in WSM, Section 303-00, replace cylinder head and cam assembly, pipe plugs and timing chain tensioner, per procedure outlined in WSM, Section 303-01.
3. If cylinder leakage and compression tests are inconclusive, perform misfire diagnostic, per TSB 05-22-8.
1,891 views
Usually answered in minutes!
still has misfire #3
02 Toyota Tacoma when engine warms up cylinder 3 has a misfire po303
×