FAQs—Buick Roadmaster Series 70
Lately, I've been having a couple of problems with my Buick Roadmaster Series 70. Yesterday, I've experienced difficulty when starting it, and it cut off after it did. It seemed like the fan was coming on and off as it idled. I've replaced the plugs, wires, distributor cap, among others, but nothing happened. The code read 15, so I also changed my coolant temperature sensor. I also sprayed starter fluid on it, but it stalled out a few seconds after starting it. What should I do next?
Have you checked your fuel pump pressure? If no, then your pump might be weak, which causes your vehicle to start but not idle. If everything is fine with your fuel pump, you might want to check your timing chain. It might be positioned at two degrees. Make sure to adjust it back at zero. It may do the trick. Another option is to check the injectors or the throttle body unit. If you are spraying fluid in but your vehicle runs until it runs out, then it may be starving for fuel. If all else fails, bring your vehicle to the car repair shop to have it diagnosed and repaired.
I have a problem with both of the windows on the driver's side of my Buick Roadmaster Series 70. The front one seemed to have slid off the track that I had to manually guide it back in place to close it. The rear one, however, was worse. I rolled it down a few inches, and when I slammed the door, the window fell. Good thing no one was hurt. I wonder if this problem is normal to Roadmaster owners. What should I do?
You are correct. This window problem is a common one among Roadmaster owners. Most of the owners complained about the window regulator as the culprit for this problem. One of the rollers in the window regulator goes bad and out of track. This is due to its plastic material and poor design. All you need to do is to replace this roller to solve your window problem. This can already fix it, and you do not need to replace the entire window regulator. While you're at it, check the window regulator on the passenger's side if it is already faulty as well. Replace the worn-out roller as soon as possible to avoid having your window break or fall again.
The fuel injectors of my Roadmaster are acting up. I've already used up two cans of starting fluid to help it start, but it doesn't. I checked all the fuses and relays, and they are all working fine. I also cleaned all the connectors and replaced all cracked vacuum lines. I wonder what's going on with my car. Any idea?
This problem usually happens if you let your car sit in your garage for quite a while. When this happens, all you need to do is to flush your fuel injectors and prime them as well. Remove the fuel injectors one by one, and perform a reverse flush with at least 6 cc of denatured alcohol. This is usually caused by old gasoline, so make sure to refill your gas once in a while.