1997 4runner throwing codes like candy

[Teacher4]

I have a 1997 sr5 4runner. The other day coming off the freeway it stopped and wouldn't restart.Parked it and walked home. Came back with a few tools. It started up but as soon as put in gear it died. Could restart but would die as soon as put in gear.
Came back late that night, I started up and I could drive it almost home, then died again.
Took to a friend. He can start it and drive around block but it dies, just like it did on me.
We pulled the codes and it is showing
P0300
P0301
P0302
P0305
P0305
P0335
I have read the threads about these individually but, not seen all together.
Is the truck done? Or where should I start to see if repairable?
Thanx
X

 

[TheDurk]

A lot of misfires plus crankshaft position sensor malfunction. Basically, ECU has no idea when to fire the plugs. Could be a bad sensor or associated wiring, loose crankbolt/pulley (check this first, soon, as it could worsen fast ending up with ruined crank/dead engine). Figure this P0335 out, and you will probably fix your misfires. Way too early to junk the truck, could be easy fix.

http://tacoma.site40.net/4Runner_96-02_Repair&Wiring/techinfo.toyota.com/ileaf/02toyrm/02toypdf/02rmsour/2002/024runne/di/eg5vzfe/cip0335.pdf

Was a timing belt or water pump replacement done recently on this truck?

 

[Teacher4]

Thanx for the help.

We put in a new crank sensor. Didn't help.
Funny you should ask, but yes, yes I did have timing belt and water pump replaced recently. About a month ago.

 

[swaycleveland]

kiss

Keep it simple stupid. Next time before you buy a new sensor try just unplugging the one you have. If nothing changes the sensor obviously has a problem if things change then the circuit was working.

Nothing changes unless something changes

Timing belt problem

it was just changed right

That's the first place to look

 

[TheDurk]

Thanx for the help.

We put in a new crank sensor. Didn't help.
Funny you should ask, but yes, yes I did have timing belt and water pump replaced recently. About a month ago.

I asked because I'm worried your crankbolt is loose and crank pulley is getting sloppy. That bad boy has to be torqued to 218 ft-lbs. and if it didn't happen it could be working loose. I'm even more worried now that you said you have a new crank sensor, meaning this is now the most likely possibility, added to the fact of the recent TB/WP work meaning the crank pulley was off. Get somebody who knows what they're doing on the case now or you could lose your engine. I hope I'm wrong. Catch it in time and maybe you just need a new key, or a new key and new pulley.

The other thing that could have happened is they chipped a tooth off the timing sprocket, messing up the signal. Each of the 54 teeth sends a signal and you need all of them to keep the ECU happy.

http://www.toyota-4runner.org/3rd-gen-t4rs/152523-1-loose-bolt-%3Ds-new-engine.html

 

[Teacher4]

Thanks for the help.
Planning to stop by the shop that did the work tomorrow. I'm not that optimistic the will make the necessary repairs, for free.
What I am wondering is why someone has come up with a fix for this problem? Other than a rebuild. From the links others have left, this appears not to be an uncommon problem. Could it be repaired? Weld another tooth on?

 

[TheDurk]

Thanks for the help.
Planning to stop by the shop that did the work tomorrow. I'm not that optimistic the will make the necessary repairs, for free.
What I am wondering is why someone has come up with a fix for this problem? Other than a rebuild. From the links others have left, this appears not to be an uncommon problem. Could it be repaired? Weld another tooth on?

No, but the sprocket doesn't cost that much. Even the pulley is no big deal if you junkyard it or buy used. New it's a couple hundred. It's when things get really loose and the bolt wallows out the bolt hole in the crank that this gets ugly. Very good chance this has not yet happened to you, but that's why I am saying check it soon.

Ask them what torque they used on the crank bolt. If they have no idea what it should be you have your smoking gun.

 

[TheDurk]

Thanks for the help.
Planning to stop by the shop that did the work tomorrow. I'm not that optimistic the will make the necessary repairs, for free.
What I am wondering is why someone has come up with a fix for this problem? Other than a rebuild. From the links others have left, this appears not to be an uncommon problem. Could it be repaired? Weld another tooth on?

No, but the sprocket doesn't cost that much. If it's just the key parts cost is a few bucks (you want a new bolt, too.) Even the pulley is no big deal if you junkyard it or buy used. It's when it get really loose and wallows out the bolt hole in the crank that this gets ugly. Very good chance this has not yet happened to you, but that's why I am saying check it soon.

 

[Teacher4]

Thank you for all the help. As it turns out the bolt is too loose. I talked the repair shop into loctite ing it and cranking it down. It works for now. Not sure how long it will last. So far after 200 miles still good.

 

[TheDurk]

Thank you for all the help. As it turns out the bolt is too loose. I talked the repair shop into loctite ing it and cranking it down. It works for now. Not sure how long it will last. So far after 200 miles still good.

As well they should have. If done to spec, you should be fine now.