Bandit's Surging/Poor Idle - Page 5 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 11-12-2006, 02:09 AM   #41
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I had this problen a few years ago, Turns out my EGR mount was cracked allowing blowby. As you have the same mount you might want to check that. Mine was pretty obvious after it was discovered. You can check for this by:

Hold onto the EGR pipe (the one wrapped in the white thing) It should take a long time to heat up, but 45 seconds if something'* wrong.

Look at where the EGR mounts, the underside of that peice. See any exhaust carbon?

Look at where the EGR mounts, my crack went through the inner circle, You'll see what I mean when you look.

Even though '94 uses the linear EGR, the mount is the same and I suspect the diagnosis will be too.
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Old 11-12-2006, 02:10 AM   #42
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My dad has the Auto Xray 6000.

What do you suggest i look for, i know any and all the codes i get, I have two.
One for the EGR and one for the Cruise Control
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Old 11-12-2006, 02:11 AM   #43
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Damemorder- I will check that in the morning thanks
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Old 11-12-2006, 03:04 AM   #44
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Quote:
Originally Posted by bandit
My dad has the Auto Xray 6000.

What do you suggest i look for, i know any and all the codes i get, I have two.
One for the EGR and one for the Cruise Control
I don't know for sure, but what I can tell you is that an operational scanner will tell you everything that the PCM is seeing as far as sensor readings.

I was hoping Archon or markwb would explain the scanner operation and what to look for.
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Old 11-12-2006, 11:47 AM   #45
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Quote:
Originally Posted by MACDRIVE
I was hoping Archon or markwb would explain the scanner operation and what to look for.
They have 00+'* and neither currently own a scan tool.

Ryan.. hook the Xray up. If it has a record function, use it to record the car sputtering and post the data. Mac is alluding to one of the sensors giving a questionable reading that is making the car act up.
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Old 11-12-2006, 02:52 PM   #46
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Ok cleaned the EGR, Checked for leaks.

Every thing seems ok far as EGR

But still having the problem
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Old 11-12-2006, 03:23 PM   #47
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Just curious, did you drive it with the EGR unplugged?
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Old 11-12-2006, 03:41 PM   #48
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Quote:
Just curious, did you drive it with the EGR unplugged?
I just figured it out. He must have crossed the EGR port with the coolant bypass ports on the LIM so now coolant is leaking into the EGR......OH NO

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Old 11-12-2006, 06:00 PM   #49
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Ok here is some scan data.

Got two pics and all the data from both scans.

Ill post some data, ask for what else you want and ill post it.

stumble at start

Throttle Sensor |0.39| Volts
Throttle Sensor |0.39| Volts
Throttle Sensor |0.39| Volts
Throttle Sensor |0.39| Volts
Throttle Sensor |0.39| Volts
Throttle Sensor |0.39| Volts
Throttle Sensor |0.39| Volts
Throttle Sensor |0.39| Volts
Throttle Sensor |0.52| Volts
Throttle Sensor |0.52| Volts
Throttle Sensor |0.52| Volts
Throttle Sensor |0.56| Volts
Throttle Sensor |0.56| Volts
Throttle Sensor |0.56| Volts
Throttle Sensor |0.56| Volts
Throttle Sensor |0.56| Volts
Throttle Sensor |0.56| Volts
Throttle Sensor |0.58| Volts
Throttle Sensor |0.58| Volts
Throttle Sensor |0.58| Volts
Throttle Sensor |0.58| Volts
Throttle Sensor |0.58| Volts
Throttle Sensor |0.56| Volts
Throttle Sensor |0.56| Volts
Throttle Sensor |0.54| Volts
Throttle Sensor |0.54| Volts
Throttle Sensor |0.60| Volts
Throttle Sensor |0.60| Volts
Throttle Sensor |0.76| Volts


Engine RPM | 776|
Engine RPM | 776|
Engine RPM | 759|
Engine RPM | 759|
Engine RPM | 713|
Engine RPM | 713|
Engine RPM | 714|
Engine RPM | 714|
Engine RPM | 954|
Engine RPM | 954|
Engine RPM | 954|
Engine RPM | 932|
Engine RPM | 932|
Engine RPM | 897|
Engine RPM | 897|
Engine RPM | 966|
Engine RPM | 966|
Engine RPM | 1005|
Engine RPM | 1005|
Engine RPM | 1005|
Engine RPM | 1104|
Engine RPM | 1104|
Engine RPM | 1115|
Engine RPM | 1115|
Engine RPM | 1056|
Engine RPM | 1056|
Engine RPM | 1236|
Engine RPM | 1236|
Engine RPM | 1482|


at 48MPH



Throttle Sensor |0.74| Volts
Throttle Sensor |0.98| Volts
Throttle Sensor |0.96| Volts
Throttle Sensor |0.96| Volts
Throttle Sensor |0.88| Volts
Throttle Sensor |0.86| Volts
Throttle Sensor |0.72| Volts
Throttle Sensor |0.68| Volts
Throttle Sensor |0.70| Volts
Throttle Sensor |0.70| Volts
Throttle Sensor |0.70| Volts
Throttle Sensor |0.70| Volts
Throttle Sensor |0.74| Volts
Throttle Sensor |1.03| Volts
Throttle Sensor |1.19| Volts
Throttle Sensor |1.21| Volts
Throttle Sensor |1.23| Volts
Throttle Sensor |1.23| Volts
Throttle Sensor |1.17| Volts
Throttle Sensor |1.17| Volts
Throttle Sensor |1.27| Volts
Throttle Sensor |1.07| Volts
Throttle Sensor |1.31| Volts
Throttle Sensor |1.19| Volts
Throttle Sensor |1.31| Volts
Throttle Sensor |1.29| Volts
Throttle Sensor |1.11| Volts
Throttle Sensor |0.88| Volts
Throttle Sensor |1.05| Volts


Engine RPM | 1577|
Engine RPM | 1885|
Engine RPM | 1628|
Engine RPM | 1323|
Engine RPM | 1329|
Engine RPM | 1345|
Engine RPM | 1332|
Engine RPM | 1338|
Engine RPM | 1329|
Engine RPM | 1326|
Engine RPM | 1333|
Engine RPM | 1333|
Engine RPM | 1319|
Engine RPM | 1322|
Engine RPM | 1326|
Engine RPM | 1309|
Engine RPM | 1287|
Engine RPM | 1281|
Engine RPM | 1288|
Engine RPM | 1288|
Engine RPM | 1275|
Engine RPM | 1281|
Engine RPM | 1312|
Engine RPM | 1323|
Engine RPM | 1330|
Engine RPM | 1381|
Engine RPM | 1394|
Engine RPM | 1415|
Engine RPM | 1434|
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Old 11-12-2006, 07:03 PM   #50
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Where in Gods name do you get that info? I'm getting slightly excited. And I don't want to hear that it costs an arm and a leg, cause I can't give one up.
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