Then, place the handle end of the screwdriver against your ear. If your water pump is easy to reach, you can gently place a really long screwdriver tip against it. The problem with most engine noises is that they are difficult to hunt down. Here are the most common symptoms of a bad water pump in your Malibu:Ī noisy water pump can indicate that it has a bearing that is going out. The only question is how long will it take to happen. But it is a simple machine with moving parts, which means that failure will inevitably strike. It is possible for the water pump to last for the entire life of the vehicle. ![]() Taking a look at the health of the drive belt is always a great place to start if you are trying to figure out if your Malibu’s water pump is bad. If nothing turns it, it can’t pump any water. Typical signs of a bad water pump include overheating, white smoke, a bad smell, rough idle, and more.Ī water pump works by pumping water through the engine. If it doesn’t pump water through the engine, it’s going to overheat and do a lot of damage. Then button her up and she should go well over 200k if you take care of it.Your Chevy Malibu’s water pump is one of the most crucial parts of the engine. You can even have the injectors tested for good operation and spray uniformity, go ahead and replace the intake gasket is the right thing to do, and do the oil pump drive O-ring at the same time. The other thing which really should be done at the sametime is replace the injectors O-rings since you'll have the manifold off. The spider leg one, you can't get away with that. Not even change the intake gasket and it will seal back up fine. Depending on how clean the engine is, I usually can even just pop out all the bolts to the intake manifold to lift it, and get to the Oil pump drive, undo the clamp, lift it out and replace that gasket and put it all back. It was a great engine, and now I have a 92' Cutlass convertible with the same basic engine, but the 3.1 though now at 73K miles, and I know I'll be in for these fixes again soon on this car, but it's easy.Īnywhere around 80k - 110K miles, the Oil pump drive O-ring will start leaking, and it can make a mess on your driveway. I sold a Corsica with 150K miles that ran like a horse, burned no oil, that had the 2.8. They can all have problems, even Toyota's. All these engines are very good engines, many have gone well over 200k miles, I even met a guy who has a Cutlass like mine who went over 300k, so don't be quick to knock them or listen to people who will just call them junk because it has a leak, those are small problems, but if coolant is getting into the engine through a leaky intake manifold gasket, it's that damaging effect that can waste the engine. The earlier 3.1's and 2.8's like I have, have a couple things that are really very simple that need replacing around 95,000. I would drain this coolant and go buy the old common green style coolant. In the spider leg style this was also the time GM went to the Dexcool coolant I believe, and I've read this coolant acts to desolve away the cheapo plasticy gasket they put in those engines later, and it's the orange coolant. ![]() The earlier 3.1's like the 2.8 with the more solid brick aluminum manifolds don't have this problem. It is largely the later 3.1's manifold, something like 94' and later with the spider legs looking intake manifold.
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