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rhythmic hesitation in '93 SL1



 
 
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  #11  
Old December 29th 05, 09:53 PM posted to rec.autos.makers.saturn
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Default rhythmic hesitation in '93 SL1

Doesn't matter if the AC compressor is working, or whether the system is
charged or not (as long as you didn't rip it out)....As long as you have the
button, all your doing is tripping the electrical cooling fan with the AC
switch. Next time your at 3/4 on the needle, push the AC button on & off
(the inside blower has to be on as you get a yellow light on the AC button).
Try it out!!

Scott

> wrote in message
oups.com...
> Nope no AC, the compressor was busted when I bought it, and it didn't
> seem worth it at the time to get it replaced (the longer the car lasts,
> the more I wish I replaced it at the start). I've really, really
> regretted this in 2 hour traffic jams in my former commute, next to
> fuming tractor trailers, in 98 degree humidity here in DC area.
>
> The coolant light flashed at me for a split second before this
> incident, and for several seconds after the overheating incident. It
> was below the fill bar but not by a whole lot. Hopefully that explains
> the overheating, knowing there's a separate sensor.
>



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  #12  
Old December 30th 05, 01:57 PM posted to rec.autos.makers.saturn
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Default rhythmic hesitation in '93 SL1

Just try not to do this too often on charged systems though.
Compressors don't like to be cycled that fast.
Luckily, my SL1 is still charged with the old R-12 refrigerant and I
usually give it about 30-60 seconds
before I switch it off.

  #13  
Old December 30th 05, 02:03 PM posted to rec.autos.makers.saturn
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Default rhythmic hesitation in '93 SL1

Is your car overheating on a regular basis?
Mine started doing that a few years ago, even in mild weather. I
flushed the system and really flushed out
the radiator. Checked its capacity and it seems to be at par with the
specifications.
I keep my coolant level in the reservoir where it belongs, replaced the
thermostat, yet it still overheats.
Interestingly, after the flush I noticed the temp gauge sits at 1/4
scale in the winter whereas it used to be
half scale for the 12 years before the flush.

  #14  
Old December 30th 05, 05:38 PM posted to rec.autos.makers.saturn
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Default rhythmic hesitation in '93 SL1

Ok everyone...the official diagnosis is in. It's the transmission
slipping between gears, it needs a rebuilt transmission. First major
problem with this car, so pending an opinion on the condition of the
engine, I'm going to get this done.


navaidstech wrote:
> Is your car overheating on a regular basis?


Nope, it only overheated once when attempting to get home from my
university right when they let a football game out. The car was idling
for about 45 minutes to get through one traffic light (although
overheated at a later traffic light), and apparently the coolant was
low.

  #15  
Old December 30th 05, 07:48 PM posted to rec.autos.makers.saturn
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Default rhythmic hesitation in '93 SL1

Ok..take that back for the time being. Apparently the mechanic hadn't
seen the pulsation just having the car in park, and it couldn't be the
transmission if it were in park right? A transmission shop thought it
sounded like an engine problem, so the mechanic is going to look at it
some more. I've gotten quotes for rebuilt transmissions between $1500
to $2300 (yikes), most of them in upper part of that range, wonder what
a rebuilt engine would cost...

  #16  
Old December 30th 05, 08:17 PM posted to rec.autos.makers.saturn
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Default rhythmic hesitation in '93 SL1

A lot less than that for sure.
You shouldn't have to pay more than $1000 on a rebuilt engine. I would
suggest visiting a few scrapyards in the area and see what they've got.

I picked up a used Nissan ........oh man, I can't remember the model #
now....it came after the 300ZX......280SX??? Anyway, pretty good shape,
about 80k miles on it. Got it for $500.

  #17  
Old December 30th 05, 11:49 PM posted to rec.autos.makers.saturn
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Default rhythmic hesitation in '93 SL1

The mechanic is still stumped what the problem is now, he was able to
replicate the pulsation and thought it was really strange. He said the
car isn't giving him any other trouble codes other than 26, which I
told him about. He did a tune-up with new plugs and wires and said
that didn't fix it. Tomorrow he'll try cleaning the throttle body, but
not sure what to do if none of this does anything.

  #18  
Old December 31st 05, 02:58 AM posted to rec.autos.makers.saturn
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Default rhythmic hesitation in '93 SL1

i am wondering just a hunch, has the fuel presure been checked, may be
failing fuel pump or filter.

  #19  
Old December 31st 05, 10:46 PM posted to rec.autos.makers.saturn
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Default rhythmic hesitation in '93 SL1

I don't understand this, maybe someone can explain...but the mechanic
said he took the vacuum off the EGR valve and the car isn't hesitating
anymore. Is it normal for the EGR valve to not be under vacuum? Does
this sound like the EGR valve itself being the problem, or the solenoid
that controls it? I know the EGR valve itself is like a $20 part, they
even change it for you at Jiffy Lube. Figures it looks like that silly
engine code may be the culprit after all, guess this is what happens if
you ignore a trouble code for 6 months.

  #20  
Old December 31st 05, 11:22 PM posted to rec.autos.makers.saturn
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Default rhythmic hesitation in '93 SL1

Actually, this clears things up for me a bit
http://autorepair.about.com/od/gener...l/bldef165.htm

Sounds like the valve is sticking open, and he's forcing it closed by
removing vacuum. Guess this is probably a bad solenoid?

 




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