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#1
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94 SL2 Persistent problems...
94 Saturn SL2
Aprox. 97,000 miles on it. Engine seems fine and so does the manal transmission. About 2 months ago the SES light started coming on whenever I would be idle at a red light or something and the temperature gauge was at 3-4/16's. As soon as I'd start driving, the SES light would go off when I reached the speed of 25 - 30 mph. took it to a mechanic to fix it. He put in a new fan and tried to hook up a switch internally so that I could turn it on when the temp gauge showed it to be running hot but I told him no. After testing it with just the new fan, the SES light was still coming on. Clearing the error codes didn't stop it either. At the time, the error codes were 26, 27 (same as 26) and 53 (new spark plugs fixed that). After he worked on it a little longer, he was obviously not getting anywhere, I was told that I needed to get a new or used computer for it. Realizing that the guy was more than incompetent at this point, I left. At this point when I left, the SES was now always on and still is. I pulled the codes from it (paper clip trick) and now am getting error codes: 23 + 26. I know that 23 is a sensor and it can easily be replaced. My thinking is, by going back to when the SES light starting coming on and how and when, there's gotta be something more than replacing the computer is going to resolve. Especially since I have been more than once told that replacing the computer doesn't mean that the SES light problem will go away. Is the computer usually the first thing to be suspected? A short wire or something can't cause this? What else could cause this? Some have told me to replace the thermostat, others say it's another sensor "somewhere". I'm at my wits end because I can't figure out what's going and how to fix it. Plus, I need to have it fixed in order to pass the inspection. It won't pass if the SES light is on. While I don't expect any answers here, I figured it would be worth a shot. Someone out there must know a thing or two about what's going on. Sorry if I sound frustrated, but I've been bounced around a ton already with no resolution to this problem. |
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#2
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23 and 26 say...
23: IAT Circuit - Temp out of range low 26: Quad driver output fault If I'm reading the Chilton's right, the quad driver controls outputs like solenoids, relays and indicator lights. The quad driver appears to control: canister purge solenoid, egr solenoid, coolant fan relay, service engine soon light, upshift/shift to D2, coolant hot light, control relay and speedometer output. Hope this gives you some insight - any chance you can take it to a Saturn Service tech (I'm most comfortable with them over a local mechanic)... ....let us know how you make out. "Cozmo" > wrote in message lkaboutautos.com... > 94 Saturn SL2 > > Aprox. 97,000 miles on it. Engine seems fine and so does the manal > transmission. About 2 months ago the SES light started coming on whenever > I would be idle at a red light or something and the temperature gauge was > at 3-4/16's. As soon as I'd start driving, the SES light would go off when > I reached the speed of 25 - 30 mph. took it to a mechanic to fix it. He > put in a new fan and tried to hook up a switch internally so that I could > turn it on when the temp gauge showed it to be running hot but I told him > no. After testing it with just the new fan, the SES light was still coming > on. Clearing the error codes didn't stop it either. At the time, the error > codes were 26, 27 (same as 26) and 53 (new spark plugs fixed that). After > he worked on it a little longer, he was obviously not getting anywhere, I > was told that I needed to get a new or used computer for it. Realizing > that the guy was more than incompetent at this point, I left. At this > point when I left, the SES was now always on and still is. I pulled the > codes from it (paper clip trick) and now am getting error codes: 23 + 26. > I know that 23 is a sensor and it can easily be replaced. My thinking is, > by going back to when the SES light starting coming on and how and when, > there's gotta be something more than replacing the computer is going to > resolve. Especially since I have been more than once told that replacing > the computer doesn't mean that the SES light problem will go away. Is the > computer usually the first thing to be suspected? A short wire or > something can't cause this? > > What else could cause this? Some have told me to replace the thermostat, > others say it's another sensor "somewhere". I'm at my wits end because I > can't figure out what's going and how to fix it. Plus, I need to have it > fixed in order to pass the inspection. It won't pass if the SES light is > on. While I don't expect any answers here, I figured it would be worth a > shot. Someone out there must know a thing or two about what's going on. > > Sorry if I sound frustrated, but I've been bounced around a ton already > with no resolution to this problem. > |
#3
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26: Quad driver output fault
Saturn wants $1,500+ to replace it. They didn't check anything under the hood, or looked for shorts or bad sensors or anything like that. First thing said: "We'll have to get a new computer in that there car". I was like: and how did you determine that the computer is the culprit? Dead silence and then... "would you like to make an appointment to bring it in and have it replaced? Should only cost about $1,500 Are they nuts!?! Even though there are so many things that can cause this error code, that was their quick and easy diagnosis. What a crock... I'm still betting that the key to the whole problem is in this statement right he About 2 months ago the SES light started coming on whenever I would be idle at a red light or something and the temperature gauge was at 3-4/16's. As soon as I'd start driving, the SES light would go off when I reached the speed of 25 - 30 mph. Error code 23 is IAT circuit low - sensor needs to be replaced. This shouldn't be much of an issue. Anybody have any thoughts? |
#4
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When ever you have a quad driver fault code with an additional code, always
repair the additional first. 99% of the time, once the additonal code is repaired, the quad driver code will also go away. It has happened to me several times over the 12 years I have owned my '92 SL2. James |
#5
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4 controls/sensors on that engine probably should be replaced if not yet.
Intake Air Temp Sensor, Engine Coolant Temp Sensor, Canister Purge Valve, and EGR solenoid are the most common componets to go bad. All 4 items can be bought for less than $100 if you can install them yourself. James |
#6
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1995 and earlier use a temp sender and a temp sensor. The single wire temp
sender connects to the instrument panel and the two wire temp sensor connects to the PCM. There are diagnostics a tech (or a backyard mechanic with a Chilton's) can do. I think I've read here in the newsgroup that the connector gets corroded too. ....think I'd find another dealer to collaborate the diagnoses - if the PCM is dead I'd sure bug Joe to see what he wants for a used one... http://www.6thplanetusedparts.com "Cozmo" > wrote in message lkaboutautos.com... > 26: Quad driver output fault > > Saturn wants $1,500+ to replace it. They didn't check anything under the > hood, or looked for shorts or bad sensors or anything like that. First > thing said: "We'll have to get a new computer in that there car". I was > like: and how did you determine that the computer is the culprit? Dead > silence and then... "would you like to make an appointment to bring it in > and have it replaced? Should only cost about $1,500 > > Are they nuts!?! > > Even though there are so many things that can cause this error code, that > was their quick and easy diagnosis. What a crock... > > I'm still betting that the key to the whole problem is in this statement > right he > > About 2 months ago the SES light started coming on > whenever I would be idle at a red light or something and the temperature > gauge was at 3-4/16's. As soon as I'd start driving, the SES light would > go off when I reached the speed of 25 - 30 mph. > > Error code 23 is IAT circuit low - sensor needs to be replaced. This > shouldn't be much of an issue. > > Anybody have any thoughts? > |
#7
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Good post - should have read yours before leaving mine...
"James1549" > wrote in message ... > When ever you have a quad driver fault code with an additional code, always > repair the additional first. > > 99% of the time, once the additonal code is repaired, the quad driver code will > also go away. > > It has happened to me several times over the 12 years I have owned my '92 SL2. > > James |
#8
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Also, how realistic is it that the PCM can go bad? And can a person
reprogram it without having to buy a new one? Any other thoughts on this? Are there any good websites that get into detail on how to diagnose / test anything that might be causing error code 26? Verifying sensors, stuff like that. So far, I've found one that seems to be pretty helpful and since I'm sure there are people here that could use it, here's the link: http://www.differentracing.com/tech_articles/ Btw, everybody here has been most helpful and I appreciate it. I'm gonna follows y'alls advice, but will look into more scenarios that people might have. Thank you! |
#9
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On Fri, 14 May 2004 02:23:02 +0000, James1549 wrote:
> 4 controls/sensors on that engine probably should be replaced if not yet. Indeed. On my 93 SL2, I was getting codes 26 (quad driver) and 32 (EGR valve) so I just replaced the EGR solenoid and EGR valve, and the code 26 disappeared. The original poster should do what James says before anything else: > Intake Air Temp Sensor, Engine Coolant Temp Sensor, Canister Purge > Valve, and EGR solenoid are the most common componets to go bad. All 4 > items can be bought for less than $100 if you can install them yourself. > > James |
#10
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Well, so far we found out that the ATS sensor was totally missing, so
getting a new sensor took care of error 23. However, the air induction tube that sits at the very front is missing too. Shall we say that the previous mechanic that changed out the fan never put the air induction tube back on is a total moron? I called that shop and told them I want my air induction tube back even if they have to buy a new one from Saturn and to make sure that the previous mechanic never, ever works on our car again. They were apologetic and promised that they'll do as such. Now, the new ATS sensor sits by the air filter container and the car still gives error 26 as before. Once the temp gauge gets to aprox. 3-4/16's and I come to an idle position, the SES light comes on. Once the cars moving and I get to 25-30mph the SES goes off. The only thing I can think of besides the very rare ocassion that the PCM is faulty, is that the ATS sensor is not placed in its proper position because the air induction tube is not there. What do you guys think? |
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