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Old 02-16-2020, 07:16 PM   #1
JASWRX
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Default New Motor makes the car worth less or more?

If extended warranty replaces my engine, and I disclose this when selling, will it make my car worth more or less?

All work done by dealer...

2015 STi.

Car is stock.
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Old 02-16-2020, 07:54 PM   #2
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To me? Less. Iím leery of dealer techs doing anything invasive.
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Old 02-16-2020, 09:23 PM   #3
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is it b/c of the dealer. Would it be "better" if it was done at Subaru tuning shop?
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Old 02-17-2020, 07:30 AM   #4
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Most likely it would be worth less. Especially if its a used engine from god knows where. If it was a brand new out of the box engine then it might help retain its value.
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Old 02-17-2020, 08:16 AM   #5
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IMO 9 out of 10 buyers would be turned off by that for a relatively new car like a 2015

I'd assume the car was beat to hell if I was looking to buy used and found out a 5 year old car already toasted an engine, whether it was beat on or not nobody knows.

Kind of like a heavily modified car that makes XXX hp over stock. It's a roll of the dice,
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Old 02-17-2020, 08:59 AM   #6
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Yup. Engine is replaced, but a buyer is going to assume that it needed replacing because of hooning. Who knows what else is likely to break...
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Old 02-17-2020, 09:36 AM   #7
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For me, I'd pass on any reasonably new car with an engine replacement. There are a lot of reasons to need a new engine and the "just blew up while I was doing nothing" reason isn't the first one I'd jump to.

Also, while dealer techs are hit or miss some speed shops are even worse.

If I had a car with a blown up engine, I'd get it replaced under warranty and either enjoy it or trade it in immediately once it's fixed. If the dealer is offering low trade in on a legit "didn't do anything wrong" failure, I'd be super pissed.
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Old 02-17-2020, 11:21 AM   #8
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Less.
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Old 02-17-2020, 02:29 PM   #9
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the engine would be brand new...

well, maybe I don't replace it then. I guess there is no proof or anything that I had my engine replaced.

It's just misfiring, and odly, only at idle.

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Old 02-17-2020, 02:53 PM   #10
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Quote:
Originally Posted by rtv900 View Post
IMO 9 out of 10 buyers would be turned off by that for a relatively new car like a 2015

I'd assume the car was beat to hell if I was looking to buy used and found out a 5 year old car already toasted an engine, whether it was beat on or not nobody knows.

Kind of like a heavily modified car that makes XXX hp over stock. It's a roll of the dice,
Depends on how old the car is and the context of its use.

Newer car on the road with new engine = concerning.

Newer car built for the track or history of track use with new engine = may be considered a non-issue if the builder is trust worthy and the purchaser was going to do it anyways.

Newer car on the road making more power may be considered a deal if the shortblock is from a trust worthy source and the purchaser was going to do a similar upgrade.

Older car with a new motor may be considered a good thing IF the rest of the car is in great shape. Depends on the source of the new engine and WHY it was replaced.

Did it need to be replaced? What was compression and condition of previous engine?

Did the previous engine have a cracked ringlanding? Bent rod? Bearing issues?

If it is old enough, many people will think it is a good thing.
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Old 02-17-2020, 03:29 PM   #11
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Iíd say less. So far Iím not impressed at all with Subaruís dealer network.
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Old 02-17-2020, 05:20 PM   #12
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if people really are going to be suspicious, then maybe it's not worth doing? BUT, then, they are going to feel it misfire at stoplights. It is somewhat obvious as it idling along, and then it will kind of quiver and go back to normal. Does it about every 15 seconds.

Almost feels like when you turn on the AC, and vacuum changes. The misfire is a quick thing but doesn't feel normal

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Old 02-17-2020, 05:43 PM   #13
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Misfiring at idle could be a ton of things. Mine misfired so much that it tripped the CEL. I reset the light, and it came back after a few days. It turns out, it was due to to dirty injectors. I swapped them out for new ones (didn't have time to wait to get them cleaned), and the misfire has been gone for two years now.
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Old 02-17-2020, 06:47 PM   #14
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ya, I have already swapped out injectors, moved coil packs, spark plugs, etc. etc.

The CEL light comes on VERY quickly after resetting One day...

I could get another compression and leak down. I did one 2 years ago it was 6% difference between all 4, with cylinder 4 137. THe rest are in the 140s.

Maybe it's gotten worse. Funny thing, is it drives perfectly, other than misfire at idle.
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Old 02-17-2020, 10:20 PM   #15
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If in fact the engine is damaged. Obviously it will be worth more with a brand new OEM engine with a warranty VS. the engine that's in it that's damaged and missing and ideling rough. If you try and sell it with a cylinder not firing properly you will have to knock off a several thousand of the book value to give the buyer room to do what you are asking....replace the engine at some point.

You need to do a leak down test and a voltage test...could be something simple as a bad batter/corroded wires.
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Old 02-17-2020, 11:50 PM   #16
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voltage test? Hmm, not sure what you mean.

I will be doing a leak down and compression check when I can (probably next month).

Is there anything else that could cause the misfire?

I assume if it is anything engine related, compression and leak down will absolutely support this. There is only so much that could trigger this, one would think?
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Old 02-18-2020, 12:22 AM   #17
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Check all of your grounds
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Old 02-18-2020, 07:02 AM   #18
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Quote:
Originally Posted by JASWRX View Post
voltage test? Hmm, not sure what you mean.
not sure either, unless he just means make sure your alternator is working and you have 14 or so volts

anyhow, I don't see what kind of engine damage you could have that is just causing a single misfire only at idle and otherwise fine
I don't know why you'd consider an engine rebuild over that

I bet many buyers wouldn't even notice
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Old 02-18-2020, 02:01 PM   #19
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^^ ya, but I figured it was misfiring b/c there is damage, not the other way around.

But, now that I think about it, if it is only at idle, make it's something stupid simple.

The thing is the CE light comes on almost right away after resetting and clearing ECU. As in it can even happen a few miles later.

It's pretty hard to NOT feel it. My girlfriend says my car quivers every few seconds at stoplights. lol. You can also see it count up on the Access Port when monitoring cylinder roughness.

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Old 02-19-2020, 12:23 AM   #20
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at the end of the day a new engine makes the car worth more than whats in it now. Its that simple. If your the original owner, no accidents clean title etc etc than a new engine is going to increase the value. Plenty of people put new engines into STI's...even take out perfectly fine engines to install a built engine, if you get a new OEM engine from the dealer that's the best scenario. Just document why the original engine to the car was removed if in fact the dealer agrees to replace it.
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Old 02-19-2020, 01:41 AM   #21
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that is reassuring and what I wanted to hear but looking for realistic expectations, so I hope you are right

It's weird, I am hoping it shows it is something obvious when I do a compression and leak down. If not, I feel as if I will never figure it out.
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Old 02-19-2020, 10:08 AM   #22
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Quote:
Originally Posted by JASWRX View Post
that is reassuring and what I wanted to hear but looking for realistic expectations, so I hope you are right

It's weird, I am hoping it shows it is something obvious when I do a compression and leak down. If not, I feel as if I will never figure it out.
For sure! Do that compression test again..the previous numbers are all good. Pretty much impossible to diagnose these things over the net. Record and look up the code it gets on the accessport and provide that to the shop when they are diagnosing it.
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Old 02-19-2020, 11:57 AM   #23
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Quote:
Originally Posted by NighthawkSTI View Post
at the end of the day a new engine makes the car worth more than whats in it now.
^right, but I'm guessing he's asking about his end of the day NET value, not whether a new engine might bump the value a tad.
But after he writes a check for it will it be worth that amount more?

doubtful

I mean if it's throwing a code 100% of the time and you can't find it, yeah that sucks because nobody with a clue will buy a car for fair market value that has an engine code that can't be solved. In that case OP might just be backed into a corner unless you find a buyer who already wants to mod out the car and knows they'll be pulling the motor anyhow, but that's a longshot.
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Old 02-19-2020, 02:23 PM   #24
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Originally Posted by NighthawkSTI View Post
For sure! Do that compression test again..the previous numbers are all good. Pretty much impossible to diagnose these things over the net. Record and look up the code it gets on the accessport and provide that to the shop when they are diagnosing it.

Ya, I have 3 codes which seem pretty normal even if one cylinder is misfiring (which the AP shows is #4).

P0000
P0300
P0304

Like I mentioned, I am really hoping the compression comes back unhealthy b/c it will be then easy to know that was the issue!

I just don't know what else to check. It is only so much, right?

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Old 02-19-2020, 07:22 PM   #25
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Quote:
Originally Posted by JASWRX View Post
Ya, I have 3 codes which seem pretty normal even if one cylinder is misfiring (which the AP shows is #4).

P0000
P0300
P0304

Like I mentioned, I am really hoping the compression comes back unhealthy b/c it will be then easy to know that was the issue!

I just don't know what else to check. It is only so much, right?
There aren't any reputable Subaru dealers in LA??? You need to take it to a dealer and have them trouble shoot it...fix the code issues and then if that doesnt fix the intermittent "miss" trouble shoot it from there. This isnt even actually a confirmed "misfire"..it could be a hesitation a bad connection etc etc.

but again if it is mechanical damage and you replace the damaged engine with a new engine..the value is going up proportionately.
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