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Sedans Pontiac Bonneville Pontiac Bonneville General Maintenance and Repair
2228 messages, Last post on Nov 29, 2009 at 4:40 PM
You are in the Pontiac Bonneville Forum. Your Hosts are pat & karens
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We have Opatience to thank for this info. Engine Coolant Consumption or Coolant Leak (Inspect for Material Degradation/Replace Intake Manifolds) #01-06-01-007A Engine Coolant Consumption or Coolant Leak (Inspect For Material Degradation/Replace Intake Manifolds) 1995-1997 Buick Riviera 1995-1998 Buick LeSabre, Park Avenue 1996-1998 Buick Regal 1998 Chevrolet Lumina, Monte Carlo 1995-1996 Oldsmobile Ninety-Eight 1995-1998 Oldsmobile Eighty-Eight 1998 Oldsmobile Intrigue 1995-1998 Pontiac Bonneville 1997-1998 Pontiac Grand Prix with 3.8 L Engine (VIN K -- RPO L36) This bulletin is being revised to correct parts and labor operation usage. Please discard Corporate Bulletin Number 01-06-01-007 (Section 6 - Engine). Condition Some owners may comment on excessive engine coolant consumption, or an engine coolant leak near or under the throttle body area of the upper intake manifold. Cause Upper intake manifold composite material may degrade around the EGR stove pipe and could result in an internal or external coolant leak. Correction Follow the upper intake manifold removal instructions found in the Engine Unit Repair Section of the Service Information Manual. Refer to the arrow in the illustration of the upper intake manifold above. Inspect the inner diameter of the EGR passage for signs of material degradation. Degradation will appear as "pitting" of the composite material in the EGR port passage. If degradation of upper intake manifold composite material is found, replace the lower and upper intake manifolds with the following part numbers: Lower Intake -- 24508923 Upper Intake -- 17113136 (includes necessary upper intake plenum gaskets) Lower Intake Gasket -- 12537197 Follow the lower and upper intake manifold installation instructions found in the Engine Unit Repair Section of the appropriate Service Manual. If degradation is not apparent, skip to Step 7. Verify the repair. If no degradation is found, evaluate the vehicle for other causes of excessive coolant consumption as noted in the Engine Diagnosis Section of the appropriate Service Manual. Parts Information Part Number Description Qty 17113136 Manifold, Upper Intake* 1 24508923 Manifold, Lower Intake 1 12537197 Gasket, Lower Intake 1 * Includes the necessary gaskets for upper intake replacement. Parts are currently available from GMSPO. Warranty Information For vehicles repaired under warranty, use: Labor Operation Description Labor Time J0258* Manifold, Lower Intake R and R Use Published Labor Time J0255** Manifold, Upper Intake R and R Use Published Labor Time * Used for replacement of both the upper and the lower intake manifolds. ** Used for inspection purposes only, where no condition was identified and the upper intake manifold is re-installed on vehicle. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. © Copyright General Motors Corporation. All Rights Reserved. |
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Read that few of you have had the same problem. I just got my (used) 02 SE and that trim was down when I got the car (at a Buick dealership). Went to Pontiac one to have some under wrnty issues served, and that trim was one of them. The service manager decided to irder a part # 25723806 at NO charge!!! I Still don't know what it is, but will post an update upon installtion/fix. |
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I wonder if anyone (with a bench seat) noticed this design mistake; when the shift lever is in the D position, its handle is hiding the audio system display!! One must really lean forward to read the time, station, info, etc. Where are the engineers? Has anyone found a solution??? |
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I think your dealer just ordered another panel (maybe the one in your car is damaged). There is also a service bulletin on how to secure the panel better. As for the column-mounted shift lever blocking the radio and/or climate controls, that's a problem I've seen in lots of cars and trucks, present and past, some worse than others. Most Bonnevilles have the console shifter. Just as bad as the shifter blocking the radio is the steering wheel blocking the odometer (at least from my seating position). It's just one of those details that make the Bonneville just less than great. |
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Problem with engine is that it stumbles on acceleration during driving, almost hesitating with no power. Any advice would be appreciated, thanks. 1990 Bonneville SSE 350,000 km |
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| I was having that problem with my 95 SE in February of this year. On the advice of people at this forum I changed all the spark plug wires. That did the trick (so far). There's quite a few posts in this forum that might cover your problem. | |
| Ok, seems like the problem was a cracked wire for most part as well as the cam sensor magnet... the code was 41 which is for the sensor but does not tell you it's the magnet... the mechanic also suggested that the timing chain be replaced since the car had high km's and that I'm going to keep it... total with parts and 4 hours labor was $750...oh well, now it's good to go for a while (I hope), thanks. | |
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I have a 94 Bonneville w/3.8 litre non-supercharged engine w/109,000 miles on it. In recent weeks the "Service Engine Soon" light has come on at times and then gone off. My local mechanic checked the trouble codes and it showed a problem with the EGR Valve system. He said that the tube leading from the manifold to the valve can get clogged up with carbon and may need cleaning out. He said if I need a new EGR valve that it would be about $300.00. Cleaning the system out to see if that fixes the problem would be about $100.00. It involves removing the throttle body and some other hardware. Is this something I could do myself or is this better left to him? Has anyone else had experience with this? Car has run a little rough at times. I've replced plugs and checked all vacuum lines. The only other code he got was for the cruise control position sensor. Cruise has not worked for months. Does anyone know whether the servo unit is repairable or that I just need to buy a new one? Thanks, |
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New to the board. have a 99 SE. Have read many of the messages that seem related to my problem. I see people going through multiple alternators and before I start down that path am wondering if anyone has found a more direct solution that addresses why multiple alternators are failing. I read several posts where people have replaced alternators only to have the car completely die shortly after. Am worried about that result. My problem is that the car has become noticeably somewhat harder to start. Still starts after it makes a little effort (2 to 3 seconds) but just a short while ago would fire up at the twist of the key. At this same time I have noticed that after I drive for about two to three minutes, I will be stopped at a light (Same ones, either near my house on my way to work or near my office on my way home.), and the tach will drop to 0 for a split second as if the car has died and then surge over 1500 for a second as if the ignition switch has been turned on. The car tries to lunge forward but luckily my foot is firmly planted on the brake (and I don't tailgate!). This has happened about a half a dozen times over the last month. Then yesterday the car died as I pulled on to a freeway on ramp by my office. I pulled it over and it started back up, again with a couple of seconds of effort, not the flip of the wrist I had been used to. In this same time frame I have noticed some minor sputtering and surging while cruising down the highway. I get no check engine lights and my dash amp meter reads as it always has. Is this an alternator going bad? What else should I be looking at? |
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| When I had a surging problem it turned out to be the transmission. It felt like the tranny was searching for the gear during acceleration, and then it would surge. If you look through the past posts, you'll see that the transmission has been somewhat problematic with this car. Hopefully you're still under warranty. | |
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