How much timing should we have at idle...? Have rough idle, stumble problem. help?!
08-23-2007, 02:20 PM
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How much timing should we have at idle...? Have rough idle, stumble problem. help?!
Just what the question says...
I got an issue where my timing is all fucked up. Its bouncing around like it just did a line of coke and its way way low. Dealerships dont help because there is no engine light.
The car at idle is rough, timing is bouncing around from 0 degrees advance up to 12. once you give it gas or drive the damn thing its fine, but at idle.. its not right. It sounds like if it was just a little worse it would sputter and pop in the exhaust. It's just not that bad though.
I got an issue where my timing is all fucked up. Its bouncing around like it just did a line of coke and its way way low. Dealerships dont help because there is no engine light.
The car at idle is rough, timing is bouncing around from 0 degrees advance up to 12. once you give it gas or drive the damn thing its fine, but at idle.. its not right. It sounds like if it was just a little worse it would sputter and pop in the exhaust. It's just not that bad though.
08-23-2007, 02:46 PM
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Just what the question says...
I got an issue where my timing is all fucked up. Its bouncing around like it just did a line of coke and its way way low. Dealerships dont help because there is no engine light.
The car at idle is rough, timing is bouncing around from 0 degrees advance up to 12. once you give it gas or drive the damn thing its fine, but at idle.. its not right. It sounds like if it was just a little worse it would sputter and pop in the exhaust. It's just not that bad though.
I got an issue where my timing is all fucked up. Its bouncing around like it just did a line of coke and its way way low. Dealerships dont help because there is no engine light.
The car at idle is rough, timing is bouncing around from 0 degrees advance up to 12. once you give it gas or drive the damn thing its fine, but at idle.. its not right. It sounds like if it was just a little worse it would sputter and pop in the exhaust. It's just not that bad though.
08-23-2007, 03:20 PM
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timing will never be static at idle. no matter what car, or motor it is.
the base timing is set at 10 degree's. depending on etc temps
if you have not messed with the tune, and it is still box stock {gm factory, or stage 1/2} there is something else going on. vacuum leak or something of this nature
the base timing is set at 10 degree's. depending on etc temps
if you have not messed with the tune, and it is still box stock {gm factory, or stage 1/2} there is something else going on. vacuum leak or something of this nature
Last edited by Area47; 08-23-2007 at 03:20 PM. Reason: Automerged Doublepost
08-23-2007, 03:21 PM
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Im trying to find out if this is normal or not for the car to have 0 degrees of advance, i dont know of a single car where this is right... It didnt idle this rough for the first 18000 miles, im trying to figure out why its doin it now. I cant find any vacuum leaks... I hate GM. Sigh...
08-23-2007, 03:24 PM
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Okay so we should have 10 or so degrees at idle... I understand that it wont be 10 at idle no matter what. There are various timing maps that adjust depending on various sensor readings.
Does your car fall to 0 degrees then go to 13, then 3.5 and stumble at idle? or does it stay at 10ish and moves around to say 8, 11, 9, 12, 8.5, 9.5 etc..
Im trying to find out if this is normal or not. It didnt idle this rough for the first 18000 miles, im trying to figure out why its doin it now.
Does your car fall to 0 degrees then go to 13, then 3.5 and stumble at idle? or does it stay at 10ish and moves around to say 8, 11, 9, 12, 8.5, 9.5 etc..
Im trying to find out if this is normal or not. It didnt idle this rough for the first 18000 miles, im trying to figure out why its doin it now.
08-23-2007, 03:40 PM
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What have they tried?
Last edited by PhantomTA; 08-23-2007 at 03:45 PM. Reason: Automerged Doublepost
08-23-2007, 03:49 PM
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they tried nothing, he shop manager said to the tech (after a drive) the engine run a bit rought but thats it. they did nothing at all. i know there is something wrong, the car was running fine a few miles before that.
08-23-2007, 03:55 PM
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08-23-2007, 06:59 PM
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mine does the sme thing. But only after its up to temp. No issues just a rough idle. raise your idle a bit and it will most likely go away, we did figure that out
08-23-2007, 08:36 PM
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Mine has the same issue , it actually posts misfires across all cylinders on a tech2 when it idles , but as soon as i touch the gas the misfires stop . When mines idles it actually has a slight faint pop , like a cammed car , like one every 5 seconds or so , their aren't any lights or codes set.
The dealer ordered a new cat for the car and wants to change it out. The only other thing i could think of is my ignall's TD is causing false knock or something but i doubt it . Let us know if they find the cause , it's really pissing me off . Btw my car has 14k on it .
Oh and i fall way outside the build dates for the unforged timing chain and roller issue.
The dealer ordered a new cat for the car and wants to change it out. The only other thing i could think of is my ignall's TD is causing false knock or something but i doubt it . Let us know if they find the cause , it's really pissing me off . Btw my car has 14k on it .
Oh and i fall way outside the build dates for the unforged timing chain and roller issue.
08-23-2007, 08:47 PM
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Mine has the same issue , it actually posts misfires across all cylinders on a tech2 when it idles , but as soon as i touch the gas the misfires stop . When mines idles it actually has a slight faint pop , like a cammed car , like one every 5 seconds or so , their aren't any lights or codes set.
The dealer ordered a new cat for the car and wants to change it out. The only other thing i could think of is my ignall's TD is causing false knock or something but i doubt it . Let us know if they find the cause , it's really pissing me off . Btw my car has 14k on it .
Oh and i fall way outside the build dates for the unforged timing chain and roller issue.
The dealer ordered a new cat for the car and wants to change it out. The only other thing i could think of is my ignall's TD is causing false knock or something but i doubt it . Let us know if they find the cause , it's really pissing me off . Btw my car has 14k on it .
Oh and i fall way outside the build dates for the unforged timing chain and roller issue.
08-24-2007, 12:38 AM
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Just what the question says...
I got an issue where my timing is all fucked up. Its bouncing around like it just did a line of coke and its way way low. Dealerships dont help because there is no engine light.
The car at idle is rough, timing is bouncing around from 0 degrees advance up to 12. once you give it gas or drive the damn thing its fine, but at idle.. its not right. It sounds like if it was just a little worse it would sputter and pop in the exhaust. It's just not that bad though.
I got an issue where my timing is all fucked up. Its bouncing around like it just did a line of coke and its way way low. Dealerships dont help because there is no engine light.
The car at idle is rough, timing is bouncing around from 0 degrees advance up to 12. once you give it gas or drive the damn thing its fine, but at idle.. its not right. It sounds like if it was just a little worse it would sputter and pop in the exhaust. It's just not that bad though.
you own a 98 GS....any chance of you being a member on RegalGS.org?
/off topic
08-24-2007, 05:05 PM
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Not really active, but yes.
Last edited by PhantomTA; 08-24-2007 at 05:05 PM. Reason: Automerged Doublepost
08-24-2007, 05:09 PM
#22
I saw your post on the SEE forums, and wanted to say something since I had the same issue once, but I couldn't remember what from.
When mine was doing that I had a messed up injecter. It did it for a little while before I started getting misfires and I really started to scan it. I replaced the injector and it's worked fine since
When mine was doing that I had a messed up injecter. It did it for a little while before I started getting misfires and I really started to scan it. I replaced the injector and it's worked fine since
08-24-2007, 05:40 PM
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I had the same problem with the injector , and rough idle . My timing at idle bounces from 0 to 10-12 and I dont currently have any issues or rought idle , so I would assume it to be normal to dip to 0 . When it does read 0 its only for like millisecond .
GL on getting it solved , dumb problems like this are nagging as hell . Also imo , the best thing Ive done to mine is maintence wise is switch to NGK BKR6e's . It smoothed out the idle alot and it was generally smoother throughout the entire rev range . I had alot of unexplained issues with the stock NGK plugs . I went thru 3 sets , and all "appeared" anyways to be good when replaced . I used the stock gap with the BKR6E's .
GL on getting it solved , dumb problems like this are nagging as hell . Also imo , the best thing Ive done to mine is maintence wise is switch to NGK BKR6e's . It smoothed out the idle alot and it was generally smoother throughout the entire rev range . I had alot of unexplained issues with the stock NGK plugs . I went thru 3 sets , and all "appeared" anyways to be good when replaced . I used the stock gap with the BKR6E's .
08-24-2007, 06:20 PM
#24
Give me a call. My number should be on the SEE members forum with the info thread. If I can get my laptop running again, I should be able to do it. If not, see if you can make it to Mikes on sunday and I'll be able to use Bryans HPT to do it. Are you on stock injectors? If so I'll bring some extras (used)
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