JesLet

iTrader: (19)

Got a 1997 2JZGE with 186K miles, drove it before the tune up and it was running smooth.

Prior to tune up, I thought about using Seafoam, bought a pint but ended up only using it in the crankcase. Overkill, really, I changed the oil and filter and pour 1/3 of Seafoam. Started the engine and let it idle for 10 minutes, changed the oil and filter again( oil not dark ) and drove it to work for 2 days, I accumulated 200 miles on it and changed the oil again.

I also changed the following:

Denso Iridium IK16, gapped to specs.
New wires
Cleaned throttle body
Replaced air filter
Cleaned MAF with MAF cleaner
3 oxygen sensors

Other stuff which I think has nothing to do with misfires:
New radiator and hoses with Toyota red coolant
Serpentine belt
Fuel filter
Trans fluid, OE Toyota
A/T filter kit
etc...

Ok, drove off my garage today into the freeway, car's running excellent. Going from freeway to on ramp, made a right turn, car starts misfiring. CEL light blinks about 4-5 times and it stayed on until I got into my work place.

Got a code from Autozone P0300 ... misfire in multiple cylinders.

About 2 days ago I heard erratic noise, not loud,between the distributor and cam sprockets.

My question is could it be the distributor that causes misfire since I changed the wires and plugs? The distributor leaks by the way.
Or is the Seafoam in the crankcase has something to do with it?

I don't think it is the MAF, after cleaning it I am sure it was dry before installing. I didn't break any hose from the removal of the throttle body.

What else could it be?

Just shred $100 for towing

Dx3

iTrader: (13)

Sounds kinda dumb, but did you verify the MAF was plugged in correctly? I had this happen on my GS400 and it turned out I hadn't clicked the MAF all the way in...

Were the O2 sensors universal or OEM?
Jonny

JesLet

iTrader: (19)

Yes it was plugged in, drove the car for a week with all those tune up list and it just acted this morning.

The sensors are OE Densos.

Jonny, you are always helpful in this community. I will vote for you.

Dx3

iTrader: (13)

Thx man

Try unplugging the MAF and see if it changes anything? Check you put your new wires on in the right order? Plugged the coil back in properly?

Good luck man, I hope you get it worked out soon

Jonny

JesLet

iTrader: (19)

I started the car and took off the MAF connector and it died. Gave me new codes and that's it.

I have to wait until tomorrow to tow it and then I'll take off the TB again, yeah all that pain.... more fun for me.

JesLet

iTrader: (19)

Found the cluprit!

Upon the reinstallation of the TB, the coolant hose under it was installed halfway and I guess it leaked. As a result, it flooded the sparkplug area with coolant which causes the misfires.

That hose cost me $100 for towing! Still crying about it, yes.

Anyway, I have my SC back.

Dx3

iTrader: (13)

Congrats my friend Although it sucks to waste $100, be thankful that it was something small that you fixed yourself. Also, just an FYI - you can get AAA Platinum package for $72/year that gives you 5 free tows within 100 miles You could have saved yourself $28 and still had 4 tows left

JK man!

Jonny