I have a 1999 Plymouth voyager 4 cyl. And I washed the engine and the spark plug holes filled with water shorting plugs out ,I got rid of water installed new bosh or +2 plugs along with new plug wires and a coil pack ,it ran great for 2 days and then while driving it started losing power and when running it sounds like the intake or exhaust is plugged or not getting enough fuel ,I changed air filter and its clear on that end ,I talked to a mechanic and he told me it sounds like a fuel pump to him ,this vehical has 143000 on it and has had a new timing belt put on in LA 8000 miles, my son about 5000 miles ago put diesel fuel in by mistake and diagnostics show it has a exhaust leak and #1 O2 sensor is bad it showed this 3000 miles before I started having this problem and has ran fine till now,any ideas would be helpful

SOURCE: 96 Plymouth Grand Voyager

It is an emissions problem. Or sensor problem. Take it for a trouble code scan at Autozone or similar store . They will do a scan for free. You may need to replace the catalytic converter. That cherry red pipe sounds serious.it should not be like that at all.

Dar

• 2007 Answers
• Posted on May 01, 2009

SOURCE: My 1995 Plymouth Voyager loses power, surges and backfires.

My first instinct tells me timing chain or belt, but it could be a vacuum line loose, cracked or disconnected. Using a stethoscope, or a length of gasline hose held to your ear, and with the engine running, listen for a hissing sound. Be sure and wiggle all the hoses you can. You might make one hiss. If you don't find anything, get a timing light, and check your timing marks. They should stay in basically one spot. If it's jumping around a lot, you need a new timing chain or belt. Good luck.

SOURCE: Hesitation on acceleration, engine delay, almost

Have someone press on the gas petal while you feel the exhaust coming out of the tail pipe.It should have more exhaust coming out as the petal is pressed farther down. This method is checking for a restriction in your catalitic converter. A high flow type is best. Also make sure your air filter is clean and nothing blocking your air filters intake.

SOURCE: I have a 1996 Plymouth Grand Voyager SE with a 3.3

The coil pack unit's circuit #3 drives plugs #3 and #6 directly from the PCM. If the cam sensor was defective, it should not fire any plugs. Suspect bad wiring from the PCM to the coil pack, the PCM unit itself, or a segment of the camshaft position sensor surface has lost magnetism causing missing signal to the PCM. An oscilloscope is the best test instrument for chasing down a missing pulse problem. The missing timing signal also explains why the PCM would report a 'bad camshaft sensor'. Hope this helps!

Testimonial: "I appreciate the in depth explanation of what could cause those specific plugs not to fire. I was told to maybe try changing the crankshaft pos. sensor. I figure it can't hurt. Thanks a lot."

SOURCE: I have a 96 Plymouth Grand Voyager SE, V6 3.3

Have your ECM (Computer) checked out, it coiuld be bad.

Testimonial: "Good advice"