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Vacuum from the transducer to the EGR valve

Tiny
LEAVITT
  • MEMBER
  • 1998 CHRYSLER CIRRUS
  • 122,000 MILES
When I remove the vacuum hose from the transducer to the egr valve the car runs perfect even when I come to a stop but if the vacuum hose is connected from the egr valve and transducer it whats to stall when I come to a stop and doesnt want to go when I press on the gas
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Sunday, July 29th, 2012 AT 4:01 PM

46 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
The egr shouldnt have vacuum at idle so while the car is idling see if there is vacuum going to the egr valve it self?
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Sunday, July 29th, 2012 AT 4:10 PM
Tiny
LEAVITT
  • MEMBER
  • 29 POSTS
There is no vacuum from the transducer to the egr valve but there is vacuum from the intake to the transducer if the will help explain
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Sunday, July 29th, 2012 AT 4:21 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Ok so where is the problem?Is the transducer leaking vacuum or something?Iam trying to figure what your trying to say?
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Sunday, July 29th, 2012 AT 4:26 PM
Tiny
LEAVITT
  • MEMBER
  • 29 POSTS
Ok the problem is the car runs rough and tries to stall everytime I come to a stop well and idles rough with the vacuum hose on the egr valve so I took the hose off and the car runs great but with the vacuum hose off that means that the egr valve is not allowing the gases to go to the intake to burn again I hope I have explained it correct and you would understand
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Sunday, July 29th, 2012 AT 4:36 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Ok so with the hose removed from the egr valve your problem is solved?Also at idke there is no vacuum to the egr valve?If sounds like your egr valve is sticking when it opens and is still open when coming to stop even though no vacuum is going to it.
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Sunday, July 29th, 2012 AT 4:45 PM
Tiny
LEAVITT
  • MEMBER
  • 29 POSTS
Yes but its not open its clesed but I can use a small screwdriver and move the egr valve diegram and it will move freely or hook up and vacuuum hose and suck on it and will open and the car will stall I dont know where to turn or what I should do know should I drive it with out the hose hooked up or is there a nothere problem which is telling the transducer not work any ideas would be helpfull
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Sunday, July 29th, 2012 AT 4:52 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So does the car ever surge or run rough while driving down the road with the egr hose hooked up?
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Sunday, July 29th, 2012 AT 5:05 PM
Tiny
LEAVITT
  • MEMBER
  • 29 POSTS
Yes it does in the city driving but when ur on the freeway its fine and the first stop is fin as well but when you come to the second stop it runs rough and tries to stall and you have to add gas before it stalls then you go to take off from the second stop it surgesabd thats with the hose hooked up but when I unhook the hose it runs great even in the city and stops im very confused at this piont
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Sunday, July 29th, 2012 AT 5:14 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Sounds like your describing a bad egr valve it shouldnt act like that.I have seen them with weak return springs so when they open they open too far too fast. Also would make sense when you come to stop the valve isnt fully closed right away so you stall and run rough.
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Sunday, July 29th, 2012 AT 10:05 PM
Tiny
LEAVITT
  • MEMBER
  • 29 POSTS
Problem fixed it was the egr valve transducer when bad and not the egr valve but thank you for your help (saturntech9) but one last word for those having the same problem locate the transducer and egr valve and use an hand held vacuum pump and test them both
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Monday, August 6th, 2012 AT 11:48 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So the transducer was traping vacuum to the egr valve so it was staying open?Thats why you had to look at the egr like I was saying that it sounded like it was staying open. Without looking at cant the reason its happening.
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Tuesday, August 7th, 2012 AT 12:35 AM
Tiny
LEAVITT
  • MEMBER
  • 29 POSTS
Well the car was fixed and ran great tell last night. Now im getting code p0108 and code p0106 any ideas or is it time to get rid of the car thanks for your help
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Thursday, August 9th, 2012 AT 9:12 AM
Tiny
SATURNTECH9
  • MECHANIC
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I would start with the code P0108 map sensor voltage too high. Do you have a scan tool that reads live data to read what the map sensor reads with the key in the run position?Thats the first step.
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Saturday, August 11th, 2012 AT 8:17 PM
Tiny
LEAVITT
  • MEMBER
  • 29 POSTS
I have a question can a map sensor cause both codes p0106 and p0108 because I bought a map sensor a few weeks ago and put it on and then the egr vavle and transducer and the problem when a way for a few days and then both codes came up and so I did a pressure and volt tst to the map sensor and the new one was bad and the old one was good so I put the old one back in and the car is running good again. Should I be look at a nother problem and yes I have a scanner but not sure on how to really run it by the way thank you for taking the time with me to work on my car
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Saturday, August 11th, 2012 AT 9:05 PM
Tiny
SATURNTECH9
  • MECHANIC
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Yes the code P0106 is linked to the P0108 code first step in the trouble tree for code P0106 is check the map sensor voltage like I told you to do. What brand and model scan tool do you have?
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Saturday, August 11th, 2012 AT 9:14 PM
Tiny
LEAVITT
  • MEMBER
  • 29 POSTS
Well the volts that was coming from the pcm was very high and when I add vacuum there was no volts and the scanner tool I has is elmscan for a labtop and with the old map sensor it had 4.5 volts with out vacuum and when I add vacuum the volts went down like I was told
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Saturday, August 11th, 2012 AT 9:21 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So are those two codes active meaning when you clear them they come right back?
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Saturday, August 11th, 2012 AT 9:26 PM
Tiny
LEAVITT
  • MEMBER
  • 29 POSTS
Yes they did with the new sensor on it but with the old one on no the have came on and I took the car about ten miles and no codes have came on nor has it tried to stall but I did try to put the new one on again and codes come up and car stalls all the time if that makes sense
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Saturday, August 11th, 2012 AT 9:33 PM
Tiny
SATURNTECH9
  • MECHANIC
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Bad new map sensor and you could have just had a bad connection to the map sensor before. If there are no codes qnd its running good now leave it alone and see how it goes.
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Saturday, August 11th, 2012 AT 9:38 PM
Tiny
LEAVITT
  • MEMBER
  • 29 POSTS
I plan on it and taking the new bad map sensor back I may not get my money back but I will get a good one and just put it in the shed just in case this old one goes bad thank you so much for taking the time to chat with me about my car
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Saturday, August 11th, 2012 AT 9:42 PM

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