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Buick 3800 Engine Problems and Diagnostics

The Buick-3800 Engine is truly a reliable engine. However, some problems do appear and Shop Carmel can help you out in this regard. We have come up with some of the major problems commonly found with this particular Buick engine. Thereby, the diagnostics for each problem will also be discussed below. 

Some Common Problems in Buick-3800 Engine

  • The leak of intake manifold coolant 
  • An intermittent hesitation or chuggle
  • During driving intermittent misfire 
  • Cracking of engine without start

The leak of Intake Manifold Coolant 

Buick-3800 engine’s coolant leaks particularly in engines of Series II 3800. Similarly, its manifold plastic intake has been a trouble for people. 

Diagnostic

The gasket manifold intake by OEM tends to weaken after covering 60,000-above miles if it runs in an area where the cylinder head gets seal coolant passage due to the manifold. 

An Intermittent Hesitation or Chuggle

You may feel an intermittent hesitation or chuggle during cruising at the speeds of the highway or while light acceleration. It happens when the automatic TCC’s (transmission torque converter) intermittent operations do not set fault codes or there is no check engine light.

Diagnostic

This problem is not because there is any issue in the clutch solenoid or the clutch for the torque converter. However, the sole reason for this problem in engine-3800 is the faulty input. The TPS (throttle position sensor) of the engine makes wrong input to the PCM computer (powertrain control module computer).

However, this problem in engine-3800 can be fixed by changing the throttle position sensor (TPS). 

During Driving Intermittent Misfire 

It happens during driving either by a worn spark plug or by a feeble coil. 

Diagnostic

Whenever, the intermittent misfire occurs when you are driving first, inspect your spark plugs after removing them. There must be a gap between these spark plugs of 0.60 inches. However, if you found your spark plug fine, leave it, and go for examining the ignition wires. 

High resistance can be produced by wires with 100,000-above miles’ mileage. Moreover, this resistance may result in a misfire in your engine. If you find such wires, damaged wires, loosely fitted wires, or cracked wires in your engine replace them all. Though, if you find your wires and plugs in good condition then do not replace them. 

However, even after replacing the damaged wires and plugs or replacing them your engine behaves in the same manner check codes of a misfire by utilizing a scanning tool. Moreover, Keep the light of the check engine on and make sure that you get 1-2 codes of a misfire for the cylinders creating misfires.

Furthermore, the number of the cylinder is indicated by the last digit of any misfire code. Let’s take an example of a cylinder with code P0302, the 2 in this code shows that the number cylinder is the one that is misfiring. 

The strength of the ignition coil also matters a lot in misfiring problems. If the ignition coil is weak it may lead to misfiring incidences. The fire cylinders of the 3800 engine have 3 ignition coils such as 1 and 4, 6 and 3, and 2 and 5. 

However, if you get misfire codes from any of those paired cylinders it proves that the root of this issue is the bad condition of the ignition coil. Thereby, it proves that there is no other reason behind misfiring. Some misfiring like a lean misfire is caused by reasons like vacuum leak, EGR leak, or bad fuel injector. Similarly, compression misfire occurs because of sticky or leaky valves. 

You can easily replace the weak coil in the ignition module. However, if any of the bad coils remained unattained the problem will not resolve. Shop Carmel would suggest you replace all of the coils if your engine is high mileage or weak, to avoid such problems on road. 

Cracking of Engine without Start

There can be many reasons that leads to no start, however; in the Buick-3800 engine, the most generalized reason is the bad CKP sensors and ICM. Where CKP means crankshaft position and ICM means ignition control module. 

Diagnostic 

Firstly, the CK or crank sensor can be diagnosed by evaluating the diagram of your vehicle’s engine wiring. Secondly, you need to test voltages of circuits for the ignition module and many crank sensors to search the fault. Moreover, 4-8 volts must find when you turn the key on between every crank sensor. If it tests bad replace these crank sensors. 

Final Thoughts

Practicing the above mentioned diagnostics will definitely help you out in resolving the problems of Buick 3800 engine. Share your suggestions in the comments section.

What do you think?

Written by Joshua White

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    How to connect your phone to a projector At the modern age everything is going to be portable and digitalized. As a part of this the use of projectors and projection procedure has also been changed. Nowadays everyone has an android smartphone. Which is developed enough to give a better projection with a projector. So it's a trendy thing to learn the procedure of connecting an android to a projector. As we need to use projectors at our offices or schools or into our homes. Do not worry. Cheap projector under 100 dollars also have multiple types of connection ports for input. It’s not the deal what kind of connection method your projector has. We will find the ways of connecting your phone to the projector. There are various models available in the market. And they also have various connection methods. Today we are going to discuss the common and standard ways of connecting android phones to a projector. Connecting methods There are a lot of variants of projectors available into the market. They have old and modern ways of connecting. The most found connection methods are: 1. Wired Connection a. MHL b. HDMI c. USB d. VGA e. USB-C ( Most suitable as it allows high transfer speed) 2. Wireless connection a. Chromecast b. Wi-Fi direct c. Miracast d. 3rd party applications. (Wireless manager ME 2.0) Wired connection methods Every projector has a wired connection function. This is the oldest method of connection. These functions vary with the technology used with it. Modern projectors are with HDMI and USB-C ports. But the older ones contain USB and VGA wired connections. In case of using MHL connection and USB-C connection you need not to use any converter. But if you want to use HDMI or VGA connection system you would need to buy an extra converter as most of the smartphones are with MHL or USB-C ports. In my experience USB-C to USB-C connection gives the best result and image quality as it supports a high data sharing speed. But if you use an old model’s projector. That might contain only HDMI or VGA ports. Both ports consume more power. So you have to turn off the power saving options of your android phone before making a connection. And I think VGA connection is the oldest method and it won’t produce your expected image. If you buy a micro HDMI converter that would be better for your use. As nowadays all the smart TV’s available into the market are with HDMI ports. So you would be able to make the benefits twice with the one cable. The wired connection functions gets the phone immediately and no need to do any other jobs beyond the details. They all are of plug and play mode. Wireless Connection The latest models into the market support the wireless connections. And most of the providers are BENQ and Epson. The most popular connection methods are Wi-Fi direct and Chrome cast. The Chromecast hardware needs to be connected with the projector with HDMI cable. Just make a wireless connection with the Chromecast and agree to the connection from the phone. Thus it is ready to be projected. The Wi-Fi direct function supports if the projector is with a built-in wireless system. Into this process just turn on the projectors Wi-Fi hotspot and make a connection with your phone. Therefore everything is ready. In the projectors wireless option you would find the function to make the projection. The both procedures mentioned above are easier and plug and play mode of projectors. Using wireless connections you wouldn’t face any loose connection or cable problems as the process is happening without any wire. You may use any 3rd party apps to find the wireless connections and projection options easily. There are so many applications available into the play store. The modern manufactured portable projectors are manufactured with wireless connection systems. It’s very easy to connect and make projections anywhere and at any time. It can be easily told that In Future, All the projectors are going to be made with these functions. Phone’s requirements The phone requirements are not so important. Because most of the phones are of android smart Phone. And apple OS. But without these two operating systems. Your phone wouldn’t project. The phone must have a working charger port with neither a working Wi-Fi/ hotspot function. The phones after android 4.2 (Jelly bean) are able to work with projectors. Finally All the projectors in the market are supplied with multiple connection options. If your phone and projector both support wireless connections then no need to buy extra wire. If the projector doesn’t have wireless mode. Then you have to check what kind of port your projector has. Not all the projectors are supplied with all the ports. Firstly check the port type and then buy an extra converter. And wishing you a happy projection experience.

    How to connect your phone to a projector