Problems with 1998 Grand Voyager Check Engine Light

C. E. White · 2003-07-11T04:04:57+00:00

For six months I have been trying to help my SO fix her mini-van. Themini-van is a 1998 Plymouth Grand Voyager, 3.0L V-6, Automatic witharound 128,000 miles. Several months back, her check engine lightilluminated, however the car ran OK and the mileage seemed "normal." Round One - Local Dodge dealer performed a "tune up." Mostly new newplugs. Light stayed out for a few days.Round Two - Local Western Auto replaced plugs and wires. Light stayedout for a few days.Round Three - Western Auto Again - replaced plugs again. Light was outfor a few days.Round Four - yours truly - Used ignition switch method to trigger coderead out." Got code 43. Checked coil resistance compared to manual,decided it was not quite right, so I replaced it. Disconnected batteryand the light stayed out for almost a week.Round Five - Used code reader and got P0300 and P0305 codes (randommisfire and misfire on #5 cylinder). Checked plugs, they looked fine. Idecided that maybe the plug wire was not on correctly. Reset light. THelight stayed out for almost a week.Round Six - Same codes as before. Replaced wires and #5 plug. Resetlight. Stayed out for a couple of days.Round Seven - Same codes as before plus P0306. Decided problem might beleaking intake manifold gaskets, so I replaced them. Reset the light andit stayed out for about three days.Round Eight - P0300 and P0305 Codes again. In desperation I replacedPlug #5 with another brand NGK and replaced the O2 Sensor with a genuineChrysler Part. Light stayed out for 3 days but the vehicle did notcomplete the OBDII Driving Cycle.Round Nine - Dodge Dealer again. Same Codes. Dealer performs compressiontest and says the compression is fine. Performs a Leak Down Test andsays based on this test, the engine is shot and should be replaced - for$4,000.Round Ten - HELP!$4,000 is a lot to but into this van. It is only worth around $4,500 ingood condition. I am suspicious of the diagnosis that the van needs anew engine. It runs OK. Not perfect, but no oil usage, no...

Problems with 1998 Grand Voyager Check Engine Light - The saga continues

Jul 11, 2003 23 Replies

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fred 22 years ago

There is product named Techton or Techron not sure. It's made by Chevron and we can get it at Wal-Mart here for about $6 or so. It comes in a black plastic bottle. On it it says something like concentrated formula. There are other Chevron products that say they have Techtron in them, things like fuel injector cleaner with Techron (in blue bottles I think). You need the concentrated formula. It's specifically designed to attack carbon and is also sold by VW and BMW dealers usually at 2 to 4 times the price.

Its about the best product I ever used for removing carbon from valves. You may need two treatments. Must do an oil change after the

2nd treatment.

Search for it on the web. It may help.

Fred

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C. E. White 22 years ago

Fred,

Thanks for the suggesti> There is product named Techton or Techron not sure. It's made by

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C. E. White 22 years ago

I thought I should let everyone know about the final resolution of the check engine light saga. In the end it was a burned exhaust valve on cylinder #5. The vehicle has been running fine for 2 months now. Alls well that ends well I guess ($900 fix though).

"C. E. White" wrote:

came back. It turns

the shop for

around to taking

almost a certainty

least until my kids

generation is

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