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2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-04-2007, 02:18 PM   #1
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Hello all, I'm a new member, My wife and I have a 2002 SSEi,

lately it has been doing a little surging while the torque converter is locked under light acceleration. I've poked around on this website for a couple of days and found only speculation as to the cause of the surging. The rpms "slip" like the converter (or it'* control software/hardware) is the culprit. It'* definitely not an ignition issue.

Anyway, A budy of mine has a scan tool so we plan on checking it out next week sometime to see if any codes are displayed.

2nd question, where is the MAF sensor located on a 2002 SSEi, is it in/near the TB or located in/near the airbox? I see a couple of wires going into the airbox, but didn't have time today to take it apart to have a look.

Does anybody have a PDF of a 00-05 bonneville repair manual? That would be awesome,

Thanks guys!

Jeremy
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Old 01-04-2007, 02:41 PM   #2
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I believe there'* a TSB on the issue, or Archon recently found a bad ground strap on one. More to come from the 00+ guys.

The MAF shoudl be on top of your TB with a three wire harness going to it. Typically they were attached using security torx bits. (Why are you asking about the MAF? it may have to do with the surging...may...may be doubtful....but might...)

On the PDF, to my knowledge no one has scanned one at this point. Although I purchased a DVD on Ebay that covered 98-05 it was the GM ESI Techline DVD.
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Old 01-04-2007, 05:01 PM   #3
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Scanning the entire manual would be a huge undertaking! It is a very large two volume set. As Bill mentioned, the DVD is usually available on Ebay, as well as the FSM. Or you could buy a new one from www.helminc.com/ They are not inexpensive. Another online option is to subscribe at www.alldatadiy.com

This is the MAF sensor location, right on top of the throttle body.

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A 00 SSEi I was working on had a similar problem. It would mostly occur right around 2000 RPM, light acceleration, just enough to put barely into boost without dropping out of OD, or downshifting. The RPMs would vary about 200 RPM once a second or so. I cleaned and put dielectric grease on all battery and ground connections. All of them except the body end of the ground strap were spotless.

The bolt that holds the strap down, as well as the threads in the body were quite rusty. It bolts to the painted floorpan under the back seat. I cleaned up the bolt and threads in the body, scraped off a little paint, and put a star washer under the lug to give it more bite through the paint and a better ground. Since this work was done, the problem has not returned.

Edit - BTW, welcome to the club!
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Old 01-04-2007, 08:47 PM   #4
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Not sure what you mean by "surging", but if you're talking about running rough or jittery when the torque converter is locked, then the first thing to do is get a tune up, mainly new wires and plugs. If you're engine is running rough at all or not tuned up, you will feel it when the torque converter is locked.
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Old 01-05-2007, 02:06 PM   #5
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Quote:
A 00 SSEi I was working on had a similar problem. It would mostly occur right around 2000 RPM, light acceleration, just enough to put barely into boost without dropping out of OD, or downshifting. The RPMs would vary about 200 RPM once a second or so. I cleaned and put dielectric grease on all battery and ground connections. All of them except the body end of the ground strap were spotless.

The bolt that holds the strap down, as well as the threads in the body were quite rusty. It bolts to the painted floorpan under the back seat. I cleaned up the bolt and threads in the body, scraped off a little paint, and put a star washer under the lug to give it more bite through the paint and a better ground. Since this work was done, the problem has not returned.

Edit - BTW, welcome to the club!
Hmm, I'll have to look at the battery connections, I've never even looked at the battery, Im sure it is probably original. And yes, that is that same symptoms I was mentioning. Other that this issue, the car purrs like a kitten.

As far as the manual, it was just a question, I found an online haynes manual for my 76 Corvette, figured I'd give it a try. I'll likely just pick up a Haynes or Chilton'* manual - or make copies from the library, when I need to do wome work. I asked about MAF since somebody previously mentioned their'* was dirty and contributed to some sort of surging.

Always check out the cheap fixes first
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Old 01-05-2007, 02:22 PM   #6
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If you plan on working on the car.....buy the Helm manual. That is the same manual the dealerships have in paper copy.

Haynes and Chiltons may get you by on most of the general stuff, they work better as fire starters though. It'* like being out in the woods...leaves will work, there'* simply no sustitute for a roll of good TP.
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Old 01-05-2007, 02:23 PM   #7
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If you need help with some specifics, we can often help you here if you need a quick answer to something. Sometimes, you just can't get to the library in time. As of a short time ago, there wasn't a Chilton'* available yet. I'm not sure on the Haynes. You should be able to get the DVD off Ebay for about the same price, or less than the Chilton'*.

A good trottle body, as well as idle air control, and MAF cleaning is a good preventative maintenance step, too. If you are going to clean the MAF, pickup a TB gasket and clean everything up well. You've probably already read it, but just in case, be very careful with cleaning the tiny wires on the MAF. They can break easily, and it is not an inexpensive part. Use some isopropyl alcohol, and a Q-tip.
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Old 01-05-2007, 06:45 PM   #8
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MAF and TB cleaning are in Techinfo. Link at the top of the page.
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