First engine issue? (rough idle)

[Kirtsky]

Hope so, as so far, the Reflash has done nothing. After the fifth dealer trip, the Acura TL has been looking really nice...

[kazkillinger]

yeah i dont know what to do except deal with it. hmm has anyone with a psifi kit had this problem too?.

[SLSduke82]

Originally Posted by Kirtsky

SLSDuke82,

I have been having the exact same problem with mine. It has been in twice for that issue. the first time they blamed it on bad gas i had filled almost 4000 miles before. the second time they said they could not duplicate. But it has done it the last two mornings when it is cold and damp outside. But yeah, exact same symptoms you are decribing. last time they ensured that the flash work was up to date, and it did not do it for over a week. Now i am wondering if it is a humidity issue as it has done it the last two mornings.

It has never done it later in the day, only when it has been sitting for a while, at least 8 hours or so. usually overnight. I'm almost glad to hear someone else is having this issue. I'm not alone it it at least. I am thinking of taking mine next week for it, if I do, I'll let you know what they say. Also, I would appreciate it if you would do the same for me if you take yours in. I'm wondering if there is some moisture building up in the intake or at the MAF maybe and throwing things off until the airflow blows it clear.

Starts up, revs to 2000 right at start, then returns to about 1100, only to sit for a second and then drop to almost nothing. Then the car kicks itself back up to 2000 trying to keep itself running, does that wobble a couple of times then settles out at 1100.

Thanks, Kirt

Yup! My problem exactly. Good to know you're not suffering alone, huh?

And yes, 6-8 hours for me, as it does it after work. My car's kept outside all the time. And it has been humid/rainy for over a week now.

I'll keep an eye on the prob and if I go to the dealer, post any news.

[r-shay]

sls....sounds like you have the exact same problem i had. I know changing the throttle body was not one of the tecs ideas because the service advisor told me they had to call the saturn technical assistance center for the fix...but seems to have done the trick

[Kirtsky]

Originally Posted by r-shay

sls....sounds like you have the exact same problem i had. I know changing the throttle body was not one of the tecs ideas because the service advisor told me they had to call the saturn technical assistance center for the fix...but seems to have done the trick

I asked about that specifically and they said that was not the problem. Also though that maybe they did not get the Cam Position sensor lined up perfect maybe.

Think I'll mention that to them again.

[Bitterman]

I keep my car in the garage when I get home and it does it in the morning and my car sits outside at work for at least 9 hours before I get back in it and it does it again. So mine does it no matter if it stays outside or if it gets to stay in the garage. I think the 6-8 hours of sitting is about what mine takes and it triggers the chugging again. I'll ask when I go in for an oil change in about a week. The tech's are real nice to me and there are a few there that will go out of there way to answer my questions. The Fishers Saturn Service Department is excellent.

[Sp00ner]

Ok, I'm not sure everyone is understanding everyone else here, or maybe it's me.

I was under the impression that SLS said that this occurs for a few seconds when he starts it. It idle's rough, the needle dips once, and then the idle straighten's out a few seconds later. Is that correct? And only when cold?

If it's 8-10 seconds, while the car is warming up, I have no idea what they would do for you. Fuel dosen't like to atomize as the temps go down. The A/F ratio for startup can be incredibly rich. It has to inject more fuel to get enough atomized, to get the car to fire up, and then has to rapidly back off the amount that it's spraying. Since the car is heating up so rapidly. 8-10 seconds dosen't seem too bad to me.

[pclear9061]

i think you guys need to move to the west coast here and you wont have as many problems

[SLSduke82]

Originally Posted by Sp00ner

Ok, I'm not sure everyone is understanding everyone else here, or maybe it's me.

I was under the impression that SLS said that this occurs for a few seconds when he starts it. It idle's rough, the needle dips once, and then the idle straighten's out a few seconds later. Is that correct? And only when cold?

Only when cold, i.e. cold ambient temp (less than 40 deg F) and engine has been sitting for over 8 hours.

I key it on. It settles at 1,100 RPM or so for a few seconds. RPMs then dip to 500 or so, threatening a stall. The ECU gives it gas. RPMs up to 2,000 for upwards of 20 to 30 seconds. Then it settles around 1,000 and I am good to go.

[Sp00ner]

Originally Posted by SLSduke82

Only when cold, i.e. cold ambient temp (less than 40 deg F) and engine has been sitting for over 8 hours.

I key it on. It settles at 1,100 RPM or so for a few seconds. RPMs then dip to 500 or so, threatening a stall. The ECU gives it gas. RPMs up to 2,000 for upwards of 20 to 30 seconds. Then it settles around 1,000 and I am good to go.

Ok, if that's the only issue, I'm not sure what they're gonna do for people. Did you have the car this past winter? Or is this the first?

If everyone else here is having the identical issue. The car takes 8-10 seconds to get itself warmed up to a point where it idle's steady, I'm not sure what you're looking for exactly. Cars have to warm up, the metal has to warm to a point where fuel can remain atomized in the suspension. Until the car's cyls have reached normal temps, you're sucking several points of compression right out of the engine, along with a very rich running condition. To me, you're seeing the car go through that exact process in that 8-10 seconds...