Any 4Runner Experts Out There? (P1300)

the1998sr5

New member
Hi fellow Toyota gear heads.

I have had a misfire for a 3 weeks and I swear it is going to drive me insane.

It happened 1st time while wheeling, I went through a bog (maybe 2.5 feet)- and the engine misfired for about 10 minutes. Check Engine light flashing. Then it went away until the next time I got the truck wet.

Wheeling a month later, (same thing) went through a small river and it began misfiring. Check engine light solid this time.

Ran codes and got an ignitor (or ignitor circut) code P1300. I changed the plugs and wires and cleared the codes. Cranked it and it is still missing, check engine came back on 2 days later.

Went to Toyota and they said the codes are usually very acurate so I should change the ignitor. I swapped one with my buddies 4 runner and it made no difference.

I brought it to a shop who checked the compression (it was excellent), and the injectors and no luck there.

I thought it could be the coil packs, but Toyota said I would have a more specific code (ex. cylinder 3 and 5 or ignition coil)

So I have not driven it or wheeled since then (I do not want to burn up the cats). I have a few dollars to spend, but I really could use some help here.

Does anyone have any ideas? Or even suggestion of a good shop in North NJ?

Again, I'm really getting desperate I looked for a year to find the perfect t4r and now I can believe its been so long since I drove it.

166k, new timing belt, new alternator, starter, plugs, wires, ignitor, water pump, radiator
 
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Maybe you got some water or silt in your alternator when you were playing submarine.
Make sure it is supplying a good solid 13.8V minimum.
 
Mine did something similar.
It sounded like A Subaru.
Same. Plugs & wires. Nothing. Still misfired.

Turned out to be fault fuel injector in cylinder 2.
New injector.
Problem solved.
 

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