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Discussion Starter · #1 ·
I brought in my milan to the dealer to check for driveability issues.

the service manager told me that they checked the engine computer and say that i keep redlining and hitting the electronicallly limited speed, and if I keep doing that, they might void my warranty

is it true that this voids the warranty?
 

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The rev limiter and the speed limiter are there for a reason. I can't see why they would void your warranty because of that. I would just go easy on it for awhile and go to another dealer.
 

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It only records the instance not the length. They cannot void your warranty. Repairs under warranty can be voided if they have evidence of tampering or modification that may have caused the failure.
 

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If you want your FUSION to last, you may want to tone it down a bit, after all it's NOT a Corvette.
Then again if you plan on trading it in or selling it within a year or two, have at it!

I wouldn't be so sure they couldn't deny the warranty either. Hitting redline and/or the rev limiter isn't considered "normal" driving and they could claim abuse of the vehicle if he developed engine problems.
Why give them a "reason" to try to deny the warranty??
 

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Discussion Starter · #10 ·
i thought the auto transmission was programmed so that the engine would operate in speeds that are considered safe mechanically?

ciscoford, does it record redline or does it record teh 112mph thing?
 

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Whenever a sets a code it also saves a "Freeze Frame Data" which includes RPM and Vehicle speed among other things.


"The powertrain control module (PCM) disables some or all of the fuel injectors whenever an
engine RPM or vehicle over speed condition is detected. The purpose of the engine RPM or
vehicle speed limiter is to prevent damage to the powertrain. The vehicle exhibits a rough running
engine condition, and the PCM stores one of the following continuous memory diagnostic trouble
codes (DTCs): P0219, P0297, or P1270. Once the driver reduces the excessive speed, the engine
returns to the normal operating mode. No repair is required. However, the technician should clear
the DTCs and inform the customer of the reason for the DTC.
Excessive wheel slippage may be caused by sand, gravel, rain, mud, snow, ice, or excessive and
sudden increase in RPM while in NEUTRAL or while driving."
 

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Discussion Starter · #12 ·
hmm does the automatic transmission even allow the engine to hit 6550 rpm redline?

also, is it bad for the powertrain to hit the speed limiter?
 

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Well the PCM won't allow the RPM to go beyond its perameters. If you run it at the speed limiter all the time then yeah it's bad but if you do it once I doubt you would hurt anything. I would be worried about the motor failing while at the speed limiter and setting the code for it..that might make it a little harder to get it repaired under warranty.
 

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Discussion Starter · #14 ·
well when it hits the speed limiter but you just stay there and it goes into overdrive its about at 3500 rpm. is there something about hitting the speed limiter that damages the engine? or is it just high rpms? Also, is running continuously at 5-6k rpm bad for the car? i can't find anything in the manual or antyhing that says why its bad for the car, just that its bad for fuel efficiency.
 

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[quote author=Nr9 link=topic=67300.msg1163923#msg1163923 date=1169532563]
Also, is running continuously at 5-6k rpm bad for the car? i can't find anything in the manual or antyhing that says why its bad for the car, just that its bad for fuel efficiency.[/quote]
Thats kind of like you jogging OR running full speed continuously, it'll certainly wear out your engine sooner.
 

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Discussion Starter · #16 ·
i don't see the analogy between running and engines spinning... its not like engines run out of energy or anything..
 

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[quote author=Nr9 link=topic=67300.msg1166208#msg1166208 date=1169625979]
i don't see the analogy between running and engines spinning... its not like engines run out of energy or anything..
[/quote]
C'mon man, engines "wear out" just like you'd wear out faster if you ran at full speed for a "continuous time".
 

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"Excessive wheel slippage may be caused by sand, gravel, rain, mud, snow, ice, or excessive and sudden increase in RPM while in NEUTRAL or while driving."


Huh? Wheel slippage might be caused by excessive and sudden increase in RPM while in neutral? Isn't there an FMVSS regulation about vehicle movement in N?

As far as running at high RPM a lot, yes it will wear the engine out faster. Lots of heat and friction in the engine. The faster the engine goes, more heat is created since you have more power strokes occurring. This causes the oil to break down faster. There are a million more factors...

The powertrain in most vehicles is tested for 150,000 miles while getting crap beat out of it at all RPM ranges. But add in manufacturing variances or defects, owner maintenance intervals, etc and the life could easily be shortened. The engines being tested are likely prototypes that were not build on a real assembly line. They may even be completely handbuild using no real production processes. They don;t have the same problems that might pop up on the production line. And they usually have different tolerances.

If you want to drive it like you stole it, get 24 month leases. Always in warranty, never have to buy new tires, basically change the oil and gas it up. :D
 
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