Rough idle after injectors.
Thread Starter
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Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
Rough idle after injectors.
Hey guys/gals. As most know, changed my injectors this last weekend. I sent my chip back to DP to get it re-burned for the injectors. Everything went well on the install. The first start up was typical to new injectors, smoke and rough. After driving around 150 miles so far, I still have a rough idle while driving and then coming to a stop. I can be going 60 mph then let off the pedal, it will slow down smooth until it shifts into 1st gear, then it starts idling very rough. The second I touch the pedal, it runs smooth. After driving around then park it in my shop, it will idle rough for a while then smooth out some. It does this in all setting. I can hold the rpms to 1000 rpm with the pedal and it is smooth as silk. When I put the chip in hi-idle 1200 rpm, it runs rough.
What do you guys think? Before I start calling around to figure this out. Other then that, this thing runs so good.
What do you guys think? Before I start calling around to figure this out. Other then that, this thing runs so good.
Thread Starter
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Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Wish I could have stayed longer. After the air had bled out and everything was back to "normal", we could could have checked live data and did some data logging, with my AE, to see if we could pin point the cause of this while it was occurring. Rougher idle sounds normal. It's the idle on hi idle setting and when coming back down from a higher speed that doesn't seem right.
Has anyone else experienced this with an injector change to single shots? That's what we need to know.
Has anyone else experienced this with an injector change to single shots? That's what we need to know.
Thread Starter
|
Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
Wish I could have stayed longer. After the air had bled out and everything was back to "normal", we could could have checked live data and did some data logging, with my AE, to see if we could pin point the cause of this while it was occurring. Rougher idle sounds normal. It's the idle on hi idle setting and when coming back down from a higher speed that doesn't seem right.
Has anyone else experienced this with an injector change to single shots? That's what we need to know.
Has anyone else experienced this with an injector change to single shots? That's what we need to know.
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Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Does sound like a good excuse for the trans upgrade. "Hey, Phyllis. I need to go to Arkansas."
Can I go too? We''ll swing by Georgia afterwards and see Jody and Diane.
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Thread Starter
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Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
I think the TC unlock has more to do with the change in rpm and load that is affecting the idle as the PCM is making adjustments for it.
Does sound like a good excuse for the trans upgrade. "Hey, Phyllis. I need to go to Arkansas." Can I go too? We''ll swing by Georgia afterwards and see Jody and Diane.
Does sound like a good excuse for the trans upgrade. "Hey, Phyllis. I need to go to Arkansas."
Can I go too? We''ll swing by Georgia afterwards and see Jody and Diane.
. Also see if Brian can through you some big oil in there while you are getting the tranny done
Thread Starter
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Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
. I will talk to Jody hopefully today, I may have to make that trip soon. 
Thread Starter
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Hook it, I'll pull it.
Joined: May 2007
Posts: 15,037
Likes: 4
From: Grand Lake, La.
I been running in modified stock and don't feel any lag. The couple times I got down on it, I didn't feel any lag. I will do more testing after I get this problem solved.