EGR code

Tiny
HELPER4CAR
  • MEMBER
  • 2000 SATURN SL2
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 2,004,500 MILES
My check engine is not on. But I am having problems going up hills it shifts OK until I'm climbing a hard Hills said it goes from 2000 RPMs to 4000 RPMs sometimes I have to manually shift it. When it's driving on straight roads it's just perfect but it is driving at about 1500 RPMs always tried a EGR valve and it made it run worse. So we took it out. When I tried to EGR valve then the check engine light came on and it was dogging horrible. The only time it really does is if I try to force it up the hill then it will act like its running out of gas. Once in awhile it will not seem to want to start they said the battery was probably getting low if it doesn't start then I floor it and it will start once every 3 months. Change spark plugs and wires and head gasket the other day. Using a lot of gas and if you force it help them Hills and not let your foot off the gas then it will warm up. Like I'm going up the hill and I'm at 65 miles an hour and then it'll just start walking down and I lose speed and if I put my foot on the gas and force it then the RPMs go up really bad. But if at night it seems to run better and I can get up the hill easier if I just keep my foot at a steady gas acceleration it can climb Hills in town on a straight road I don't seem to have no problem is it's EGR valve did I have a bad one or is it Cadillac converter clogged. I also was told the transmission was shot that was 4500 miles ago. I do not think it would still be running 4500 miles later do you. I tell you that night it runs pretty good yesterday I went 15 miles couple slugs up the hill couple times it acted up but it didn't not go it always goes but during the day especially in traffic but I'm trying to force it to go 65 climbing a hill I just struggle and if I force it like I said then it'll drop down like it's running out of gas if I let my foot off the gas or get on a straight level then it's fine. Thank you for your help
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Wednesday, April 20th, 2016 AT 12:22 PM

13 Replies

Tiny
SATURNTECH9
  • EXPERT
Alright first thing I need to know is it really a SL2 you said it has a V6 engine which is impossible for that model Saturn. Let's start there and we will address one issue at a time.
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Wednesday, April 20th, 2016 AT 12:28 PM
Tiny
HELPER4CAR
  • MEMBER
It's an SL2 I must have been wrong on it being a V6
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Wednesday, April 20th, 2016 AT 12:31 PM
Tiny
HELPER4CAR
  • MEMBER
Thank you for trying to help. I will wait a minute
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Wednesday, April 20th, 2016 AT 12:32 PM
Tiny
SATURNTECH9
  • EXPERT
If you have to hols the gas pedal all the way to floor to start it sometimes then more then likely you have a bad coolant temp sensor. That's really common on those cars. Replace the coolant temp sensor also inspect the inside of the coolant temp sensor and connector. If the terminals are blue or green instead of silver then replace the connector as well. Bad coolant temp sensor can cause a endless list of symptoms. Change it and let me know how it runs then. You might have more then one issue. But let's fix one of the easiest issues. You may have a plugged cat as well.
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Wednesday, April 20th, 2016 AT 12:41 PM
Tiny
HELPER4CAR
  • MEMBER
Thank you So much for your help. How do you know if it its pluged cats
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Wednesday, April 20th, 2016 AT 12:44 PM
Tiny
SATURNTECH9
  • EXPERT
By have a back pressure test done at a exhaust shop.
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Wednesday, April 20th, 2016 AT 12:50 PM
Tiny
HELPER4CAR
  • MEMBER
I should mention that 4500 miles ago I had brought it to a mechanic. He said I had a bad radiator and replace the radiator. And while he was replacing ball joints he couldn't get the bolts off so he bit my friend but my friend and I ask him to put a new frame on and he was a little irritated. Is there any way that when he was lifting the transmission and engine that he knocked a vacuum hose off to cause all these issues. I had no transmission issues so sluggish issues nothing before that man did what he did to my car. My car ran good occasionally at a drive-thru Waiting by 8 minutes my car would warm up but otherwise it did not ever warm up it ran good no misfiring or nothing. I can be in town on flat ground and absolutely have no trouble drive it for 45 minutes to an hour stop and go and all that but it's just when I'm trying to go up them Hills. It is very scary it is very pathetic that you can be going 65 and then all of a sudden you lose power. And not be able to get up the hill without almost coming to a stop because if I continue to force it then it feels like its running out of gas and it just does not run. Once again if I go on flat ground I don't have these issues at all. I just thought I'd let you know a little more about my car. Like I said thank you for your opinion and your help
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Wednesday, April 20th, 2016 AT 12:52 PM
Tiny
HELPER4CAR
  • MEMBER
Sorry about the wording that is wrong I'm voice texting and trying to proofread it and I just see that I didn't proofread very good I apologize I hope you can read between the lines. What I was trying to say is he was taking the ball joints off and he couldn't get the bolts off any cut my frame and put my frame. And that's when I asked him to put a new frame on and I was wondering if lifting the transmission and engine if he could have knocked the vacuum hose off if that could be the problem. Thank you again for your opinion and help
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Wednesday, April 20th, 2016 AT 12:53 PM
Tiny
SATURNTECH9
  • EXPERT
There are no vacuum lines to the transmission it's all computer inputs and outputs a vacuum line off would cause a high idle rough idle etc. If the cat got jacked up on that could cause a issue with a plugged cat. Let's start with the coolant temp sensor and let me know what happens.
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Wednesday, April 20th, 2016 AT 12:56 PM
Tiny
HELPER4CAR
  • MEMBER
Thank you so much for your suggestions I will do that I will start with the coolant temperature sensor. Have a great day. And I will let you know. Thank you again
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Wednesday, April 20th, 2016 AT 2:07 PM
Tiny
SATURNTECH9
  • EXPERT
Your welcome keep us posted.
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Wednesday, April 20th, 2016 AT 2:08 PM
Tiny
HELPER4CAR
  • MEMBER
Hello I was just reading what you wrote earlier about if it wasn't idling high that wouldn't be a vacuum problem. It doesn't really idle rough except when I first started it will idle about 1200 RPMs and then it will drop down to a thousand RPMs when I first start it. But once it is shifted even on flat ground it is idle on at about 2000 RPMs. Isn't that a little high to be idling at 2000 RPMs. When I took it to a mechanic a couple weeks ago and he put an EGR valve on it he said it was idling too high. But when he took the EGR valve off because he thought maybe we had a faulty one it still does idle about 2000 RPM it just idles steady. Do you still believe it is the problem that you suggested to me earlier thank you for helping me and I'm sorry I am giving you more information or kind of different information I was just thinking about it and talking with my friend and we were discussing about it idling at 2000 RPM's even after it is shifted
What do you think? Do you still believe it is a bad coolant temperature sensor or what?
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Wednesday, April 20th, 2016 AT 6:40 PM
Tiny
SATURNTECH9
  • EXPERT
A bad coolant temp sensor can cause a high idle. Also a bad throttle position sensor or throttle position sensor incorrect value to the ecm can cause a high idle.A bad coolant temp sensor will cause and is the number one cause of having to hold the gas pedal to the floor to start it. The coolant temp sensor goes bad and reads colder than actual temp causing the computer to think the engine is colder than it is. So when trying to start it the engine floods. Also if the engine thinks it's colder then it is the idle can be higher than it should be.I have seen them read more than a 100 degrees lower then actual temp before.I worked for Saturn over 16yrs and iam a factory trained Saturn tech.I know these cars really well. Also as far as changing the egr valves the later model S model Saturn's had different ear valves for the single cam engines and dual cam engines with different flow rates. If you mix them up and install them it will set codes etc. It sounds like you Atleast have a bad coolant temp sensor there cheap and fail often. Iam on my 5th or 6th coolant temp sensor on my 1999 sl2 since owning it. That's how often they fail.
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Wednesday, April 20th, 2016 AT 7:05 PM

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