HELP!!! All 8 cylinders fired in wrong order !!!!!
HELP!!! All 8 cylinders fired in wrong order !!!!! This is pretty damn embarassing to post this but I need help in the worst way.
I did the coil relocation mod and didn't mark the wires (I know, I know). When I attempted to wire the 4 harnesses on each side they were backwards. The battery was completely dead so I jumped it, let it get some juice for a while and started it up.
First time it turned over once or twice and make a couple misfire/backfire noises in the engine compartment. Second time it made a loud boom, I shut the car off and looked in the intake via the TB and a small thin cloud of smoke came out.
I switched the wires and it started up fine. However it idled rough and stayed @ about 900 RPM's. It ran consistently rough w/ a few subtle exhaust pops here and there. There aren't any loud ticking noises or anything. Autotap showed (2) P0102, P1626, and P0803.
The plan was to give the engine compartent a complete facelift for the Power Tour monday. This was the first time the car was started in 3.5 months. The gas was also 3.5 months old (put a bottle of HEET in before starting it)
Basically I need to know how bad I F'd up my car.
TIA
I did the coil relocation mod and didn't mark the wires (I know, I know). When I attempted to wire the 4 harnesses on each side they were backwards. The battery was completely dead so I jumped it, let it get some juice for a while and started it up.
First time it turned over once or twice and make a couple misfire/backfire noises in the engine compartment. Second time it made a loud boom, I shut the car off and looked in the intake via the TB and a small thin cloud of smoke came out.
I switched the wires and it started up fine. However it idled rough and stayed @ about 900 RPM's. It ran consistently rough w/ a few subtle exhaust pops here and there. There aren't any loud ticking noises or anything. Autotap showed (2) P0102, P1626, and P0803.
The plan was to give the engine compartent a complete facelift for the Power Tour monday. This was the first time the car was started in 3.5 months. The gas was also 3.5 months old (put a bottle of HEET in before starting it)
Basically I need to know how bad I F'd up my car.
TIA 
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Ouch,
The trick is to use masking tape and number your wires as per cylinder # so when u relocate them you know which ones go where!
If you did finally put them in the right order, I would disconnect the battery again after a few minutes, reconnect and start up again. Take a 50 mile ride so your PCM will adjust itself.
Also 1/2 a tank of premium and some good injector cleaner to clean any hardened carbon build up in your fuel system (I recommend Redline).
Autotap again to check for any missfires.
PS: I would recommend changing your oil ASAP and to check and clean plugs (Check gap also)
The trick is to use masking tape and number your wires as per cylinder # so when u relocate them you know which ones go where!
If you did finally put them in the right order, I would disconnect the battery again after a few minutes, reconnect and start up again. Take a 50 mile ride so your PCM will adjust itself.
Also 1/2 a tank of premium and some good injector cleaner to clean any hardened carbon build up in your fuel system (I recommend Redline).
Autotap again to check for any missfires.
PS: I would recommend changing your oil ASAP and to check and clean plugs (Check gap also)
TECH Veteran
Joined: Aug 2002
Posts: 4,055
Likes: 1
From: Hartsdale, NY
...my coil pack wire got separated from the harnise once and created a LOT of backfires 1/4 mile from home ....
It did not hurt the motor, however.... If you turned it off within a minite or so your probably OK.....
It did not hurt the motor, however.... If you turned it off within a minite or so your probably OK.....
Originally Posted by PREDATOR-Z
Did I say something wrong?
Do you guys think the 3.5 month old gas is bad to be letting run into the engine?? Thanks again
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TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Like I said one can of "red line" and top it off with 93 (If you can) that would cure your gas. 3.5 month is nothing unless you had water in your tank or other contaminant.
Remember to change your oil ASAP as with repeated missfires you certainly have petrol in your oil and it is crap now. Also check your plugs + gap.
Remember to change your oil ASAP as with repeated missfires you certainly have petrol in your oil and it is crap now. Also check your plugs + gap.
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Petrol in the oil? Could you elaborate a little please. I normally only change my oil every 3-5k with M1 synthetic. I don't conform to the change every 3mo or 3k. I went 7 months one time. I didn't know the oil could get contaminated so easily.
