Thanks for your help so far, August, on the 1987 505 Turbo I'm considering
buying.
On 09/16/2005 10:33 AM, "august" <august.macbeth@gmail.com> wrote:
> So when you give it a good amount of gas, as soon as it hits 3k rpm it
> just stops accelerating? or doesn't accelerate as fast? does it feel
> like its hesitating at all?
At 3k rpm it suddenly/noticibly hesitates (not sure Iıd call it a hard jolt,
but comes close) then maintains current speed/rpm (no further acceleration).
Back off on the accelerator then accelerate more gently and it works ok.
> does it pull harder down below 3000rpm?
Much harder than the XN6!
> If it does in fact have a faulty wastegate actuator, the overboost
> switch *should* kick in, if this happened, you'd know it. It cut's
> fuel so it would be a solid jolt.. If the overboost switch isn't
> working correctly you would hear a ton of detonating.. either of the
> options suggested above are worse case.
Iım pretty sure I would have heard detonation, if it was happening. Can the
overboost switch work prematurely? Or if faulty wastegate actuator, working
properly; thus, preventing detonnation and not damaging the engine. In
which case rebuilding the turbo would be called for?
> there's a little yellow LED on the bottom of the instrument cluster,
> did you notice if that came on when you had the key in the 'ON'
> position, or while you were driving at all?
Detonation/engine code light: did not come on while driving; I didnıt notice
whether it came on or not when initial put the key to ON position. As
mentioned in the original post, the dash turbo gauge does not work.
> If that light comes while you're driving the car, it means it's thrown
> a code, and could possibly be retarding ignition timing waay back
> which would cause a HUGE loss in power.
The power loss is more than if one just lifted foot from accelerator.
> I'd suggest making sure the detonation / engine code light is in fact
> functioning, and if you could, hook up a boost gauge to see whats
> going on while driving. have you checked ignition timing already?
I havenıt checked the ignition timing, however ³normal driving and
acceleration² does suggests that it is ok. I donıt have a boost gauge nor
know to hook it up. I should get one (remember the 1985 TD I bought 2 weeks
ago & still donıt know anything about).
> if there is in fact a problem with the wastegate, and its been
> overboosting for god know's how long, i'd pass on the car.
Thanks for mentioning that. I was initially tihinkig worst case is turbo
replacement and I could offer an and amount to account for that. But if
detonation Iıve got the engine to be concerned about, too.
BTW, I donıt suspect hard driving and misuse. Current owner is in his 70s
and also has 2 1985 505 S wagons. Heıs had this car for 12 years/65k of
125k total miles. Body and interior are immaculate; and itıs the first
repainted 505 Iıve seen that has a 1st quality paint job.
Charlie Lincoln
clincoln@spiritone.com
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Received on Fri Sep 16 11:54:26 2005
