idle issue after WOT deceleration...?

[Chuckie B]

First off it did this twice last August a few months after I bought the car...then never did it till a week ago or so...

I went wot in 2nd&3rd...when im comming to a stop the car will idle up to about 2k and idle down till the car almost stalls out? And repeats untill i start driving again.

If I drive thr car around town the car acts fine...I've changed the plugs, cleaned mass air & filter...it didn't act up for almost a week so I thought I was fine. Tonight It did it again..

Anyone have any ideas? I can post a video if needed

Thanks.

 

[jays03cobra]

I'm having almost the same issue. Lol I don't remember having these issues with the stock blower and just a pulley and tune.

 

[Chuckie B]

Yea. I don't understand why it did it last year...went away and now its randomly doing it again...it has to be getting a bad read of air or idk...it was really humid lastnight so idk?

 

[HFBPA889]

While your at it check and clean the IAC. Did you happen to have the A/C on when this happened?

 

[Chuckie B]

While your at it check and clean the IAC. Did you happen to have the A/C on when this happened?

Okayy I will..and no the ac was not on..

 

[03cobra#694]

Yeah, check the IAC and clean the MAF too.

 

[HFBPA889]

Okayy I will..and no the ac was not on..

I'm having a similar problem but I narrowed it down to my tune. There are dashpot settings in the tune that need to be adjusted. I had the car tuned by a guy in Rochester and I am not happy, so I just purchased the SCT PRP and going to tune it myself. I am from Buffalo by the way but have worked/lived in Rochester.

 

[Chuckie B]

I'm having a similar problem but I narrowed it down to my tune. There are dashpot settings in the tune that need to be adjusted. I had the car tuned by a guy in Rochester and I am not happy, so I just purchased the SCT PRP and going to tune it myself. I am from Buffalo by the way but have worked/lived in Rochester.

Yea I would not trust anyone in this area to touch the tune on my car...was it wilsons performance or adam mar?...u can pm me if u don't want to bash them..
. I might put it on a dyno here just to see what the cars doing but trailer it elsewhere if a retune is needed

 

[HFBPA889]

Yea I would not trust anyone in this area to touch the tune on my car...was it wilsons performance or adam mar?...u can pm me if u don't want to bash them..
. I might put it on a dyno here just to see what the cars doing but trailer it elsewhere if a retune is needed

PM sent

 

[Chuckie B]

Morning bump...any ideas???

 

[03Steve]

Yep. Spark transition between the borderline table or spark under decel table to idle mode. Minimum spark clip at idle and idle spark gain get a mention too. Easy to log. Grab spark source and spark. Also grab IAC duty cycle while you're at it.