[chetrickerman]

Awesome write up, and funny as hell too.

 

[HappyMint]

38k miles
And it's not as bad as you think, the car will quite quickly realise that the chain is stretched again. It knows because the timing goes out of whack. Don;t worry about it, I had mine reset twice by a garage trying to tell me it was to see if the problem came back.

Did they clear the code or did they actually reset the learned values by pulling the fuse?

 

[Frankiago]

I dont understand?? So, chain stretch is caused by oil?

He's saying he neglected oil changes based on miscommunication, change your oil every 3-5k miles and this MIGHT not happen to you. No guarantees. The new chain is still better regardless.

I couldn't get past the avatar...wtf did the post say?

Seriously... could've read the post 10x quicker if that wasn't there.

 

[HappyMint]

Seriously... could've read the post 10x quicker if that wasn't there.

It's mystifying >.>. :tumbleweed:

 

[Evo_Zero]

Love this write up hahahaha


Sent from my iPhone using Autoguide.

 

[O Fark]

Did they clear the code or did they actually reset the learned values by pulling the fuse?

The garage had a proper ECU interrogation tool but not the MUTIII. This they used to reset the ECU. WHich I wasn't happy about but the car came back with the error four days late, about 50 miles.

 

[O Fark]

arrrgghhhh!

Resetting the ECU doesn't clear the timing chain learned value. Either that or I've stretched a new chain in less than a week - The symbol has just come up again. grrrr.

On with the search...

 

[HappyMint]

arrrgghhhh!

Resetting the ECU doesn't clear the timing chain learned value. Either that or I've stretched a new chain in less than a week - The symbol has just come up again. grrrr.

On with the search...

Thats what I was afraid of Go pull the ECU fuse and then put it back in. If you're facing the car from the front, it's the bottom fuze, second from the left. It should reset all your learned values. If you look at the fuse cover it has an engine icon for that fuse or something.

 

[O Fark]

Thats what I was afraid of Go pull the ECU fuse and then put it back in. If you're facing the car from the front, it's the bottom fuze, second from the left. It should reset all your learned values. If you look at the fuse cover it has an engine icon for that fuse or something.

Yeah that's the fuse I pulled.

 

[RKNG]

I am in the same boat as you O Fark. Swapped the chain out and still popping the light. Seems like it comes on around ~120-150 miles for me. Popped the valve cover and the chain is still far left of the indicator. Does anyone know of a way to pull the learned value for the timing chain? That way we can at least verify that the "pull the fuse" method actually resets that learned value.

 

[churbo]

Has to be some sort of an explanation. Have you tried the stealership

 

[zabes]

wasnt tephra working on something for this? to be able to pull and reset the values. cant remember

 

[REGGieSD]

the training video posted mentioned something about replacing the oil pump chain as well if the timing chain is replaced and a bunch of stuff about resetting the learned values by hooking it up to an MUT3 device from the dealer to reprogram the learned values (sorry, i think that's what it was)...maybe it has something to do with it.

 

[O Fark]

wasnt tephra working on something for this? to be able to pull and reset the values. cant remember

Yes, and hopefully I'm working with him on this to get his program finished and my car sorted.

 

[RKNG]

A little update, I cleared my learned values (fuel trim reset) with evoscan 2.9 and it seemed to do the trick. I've clocked about 600+ miles since I cleared it and it hasn't flagged it yet.

 

[hybrid_eg6]

A little update, I cleared my learned values (fuel trim reset) with evoscan 2.9 and it seemed to do the trick. I've clocked about 600+ miles since I cleared it and it hasn't flagged it yet.

Sorry to bring this back, I'm having the same issue(just going to replace chain, its at 42k miles, I think it's stretched but the dealer thinks it's not!) not taking it to the dealer cause took it there twice and light still popped back on and yes they did the relearn value reset per TSB, so I think they don't know what they are doing so I'm taking it somewhere else, when they replace chain how would they reset the ecu to relearn the new chain?

 

[KickAss]

This is a really tedious job. I have too faint a heart to attempt this.

 

[r18eclipse]

Just adding incase someone reads this... resetting fuel trims has nothing to do with resetting chain learned values.

 

[UT_EvoX]

Just adding incase someone reads this... resetting fuel trims has nothing to do with resetting chain learned values.

Though an old thread, this is very true. The timing chain stretch value is kept in NVRAM that doesn't clear when battery power is removed. That said, the whole timing chain stretch system is dodgy at best. That's why Mitsubishi had to change the timing chain oiling design and the timing chain itself because people were still grenading the fronts of their motors when the chain stretched beyond service limits with no warning.

 

[lanasa1980]

Does anyone know what the part numbers are for the bolts on the timing chain cover?

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