Tip & How-To about Plymouth Grand Voyager
NEW INFO AS OF 10/02/2010 (see bottom of page)
Begin a process of elimination: Two steps that may save you money:
1. Check fuel pressure (if fuel injected) : Do this by locating the fuel rail - on the fuel rail (above intake manifold, front side) you'll see a black (round) knob. Unscrew this and put in a safe place (pocket etc). Inside you'll see a needle. Press this as you cover slightly and if fuel is dispursed, you have fuel pressure. This should happen even after the car has not been run for sometime. If there is no fuel pressure, you may need to replace the fuel pump (sending unit) in the has tank.
If carborated, you may either need to adjust the fuel mixture on the carborator, or if a mechanical (in addition) fuel pump is installed, this may need replaced or the one in the tank may need to be replaced. However, before doing either of these, repalce the fuel filter and the airfilter. If the problem is still there, then start by replacing the cheapest of the two fuel pumps.
2. If none of the above are the problem, if the car will start and idle, locate the MAS (mass airflow sensor). This is usually on the driver side, and sites between the airfilter housing/casing and the intake manifold. It will have a small (two to three wire) harness coming out of the left/right side. Usually left side.
Once you have located this, with the car running, tap on the top of it with a screwdriver handle or other object. If the car stalls, hesitates at any point or dies, then it may simply need to be cleane, or may need to be replaced.
Again, start with the cheapest, and purchase a can of MAS cleaner. Spray generously inside the MAS (honeycomb area) from both sides, making sure to spray the sensor inside. Don't worry, this spray is designed specifically for these sensors and will not harm the sensor. It even tells you this on the can.
Re-install the MAS (don't tighten clamps yet) - and connect the wiring harness. Start the car and again, tap on the MAS. If the car (idling) stalls, or dies then the MAS needs to be replaced, and you have (hopefully) solved this issue.
3. If this is not bad, and the car is still stalling, running (idling) rough - and there is no distrubutor - locate the coil pack(s) at the rear of the engine. There may be 3 or just one. (depending on engine). If one, take if off and have it tested. Under the coil pack(s), there is a unit called a modular. This cannot be tested, but if it looks white, has bubbles, or looks melted in any area it most likely needs replaced. If not, leave it attached and have the coil pack(s) tested and replace any and all that are tested bad.
4. If none of the above are the issue, try to get the car to an auto parts dealer for a (usually free) diagnostics test to determine the issue. This will bring up any and all codes for any faulty parts and components and will more effectively help eliminate possibilites.
(NOTE: If you can get your car to a place where it can be diagnosed, I suggest this above all else above as it may save you a great deal of time, and even money; if not, follow each step, and remember: always start small and cheap, and work your way up. No need to buy expensive parts if they don't need replaced.)
Thank you sincerely for choosing Fixya.com for your questions. I look forward to helping as many people as I can.
Also, this tip/advice is for all makes and models that fall under the stipulations and parts or components desrcibed here.
Some other thing that will prevent an engine from starting or running:
1. Harmonic balancer
2. Crank shaft sensor
3. Cam shaft sensor
These will all be located (side to side engine) on the passenger side (or near harmonic balancer).
Posted by Brandon... on
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