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#11
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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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