I have a 1999 Chrysler Sebring convertable with a 2.5 H-code v6 in JXI trim with automatic transmission. The car has 168,000 miles and normally runs quite well. After a hard rain it started to run very lean and surge on
acceleration. The CANOBD-II reader returns a P0301 misfire on cylinder #1 with a P0201 injector #1 output driver not responding properly. At first I thought it was electrical because of invasive moisture so I diconnected the connection to the fuel injector on cylinder #1 and let it dry out. I really didn't notice any moisture anyway. I re-connected and still have same codes. On this application I have to remove the upper intake plenum and all the connections to the metering and emission controls for the engine in order to access the #1 fuel injector. I decided to replace the injector and O-ring. My question is should I replace all the O-rings for cylinders 1,3,5 while the engine is apart or is this over kill. Some sources say to replace all the O-rings at once. Isn't this sort of asking for trouble putting a new O-ring on an old injector for the case of cylinder 3 and 5? Your thoughts would be greatly appreciated and thanks in advance for your time.

 

If it was me, I'd do it. O-rings are cheap. The time spent getting to them is expensive. Every time you pull something apart you risk screwing it up. If it's already apart, and you're in there, fix what you can.

 

Thanks COT i already have them and removed the emissions and plenum today. All injectors passed the ohm test but the connectors especially the lower ones on the odd cylinders are in really bad shape. The plastic is very brittle and they break apart with the slightest pressure. Do you know how much a fuel injector wiring harness with all the connectors for the injectors
would run. Do you know of any after market places that might carry the harness?. I much rather change all the connectors when it's all apart if I could find them under 500 hundred bucks. Is there a way to just replace the
injector connectors with re-wiring all of them. In other words can I pull the wires from old connectors and just replace the connectors without having to do the whole fuel injector wiring harness and all the connectors?

Thanks
RickZler

 

Try chryslerparts.net for a price for the harness. Another source would be chryslerpartsdept.com. I doubt that you will find the connectors sold separately anywhere. If you do, let us know.
Wiring harnesses are not the kind of thing you expect to find as an aftermarket part. If anybody would have it, it would be Rock Auto.