My check engine light is blinking and I have a restricted performance message. I changed my spark plugs also #1 and #8 coils. Still doing the same thing. Please help. Thanks

 

Cdaddypop, could you please let us know what vehicle and year vehicle we are talking about. That would help those of us that don't know what you drive out.

What I can tell you is that how long you drive the car should be very minimalized. The flashing check engine light is telling you that you are doing damage to some part of the engine (right now, most likely your catalytic converters) and that continued operation will result in engine failure.

 

Sorry it's a 2005 XJ8 4.2 naturally aspirated

 

With the age and miles on the car I would change all coils and all plugs.
You also have an injector code so you may need to replace some injectors too but wait until the ignition is working 100% first.

Are you clearing all the codes each time you work on the car?
.
.
.

 

[QUOTE=clubairth1;2471552]With the age and miles on the car I would change all coils and all plugs.
You also have an injector code so you may need to replace some injectors too but wait until the ignition is working 100% first.

Are you clearing all the codes each time you work on the car?
.
.No. it still has the codes.

 

I left the codes in it for now.

 

That gets real confusing fast!! Always clear all codes after reading them. Now the dumb parts stores are starting to refuse to erase codes for some reason? We only want to work on what's currently bad as the system records and keeps all kinds of things that are temporary and do not repeat. Also as you fix multiple problems the error codes will change. This is the main reason it's best to fix problems as they happen. When the car has several problems at the same time it's MUCH harder to troubleshoot it.
.
.
.

 

I read and PRINT and THEN CLEAR so I have a 'clean-slate' plus a record of the ECM.

 

Welcome to the forums Cdaddypop,

I've moved your question from General Tech Help to X350 forum. This is the place to post technical questions about your model.

Please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some information about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham

 

From the codes it looks like you have injector issues rather than plug or coils. A short circuit to ground will keep them open and ruin the cats.

 

from what i see. you had two misfire codes replaced coils and plus and now you have a injector code? if this is what happened check to make sure you didn't unplug / damage cylinder number 1 injector connector or wiring. and always follow up with findings / repairs made on your post so we know what you found and maybe it will help others.
ps welcome to the forms.

 

I cleared the codes and rescanned.

 

I'm getting ready to get back in there today. I'm trying.

 

To get rid of an easy one first I would disconnect injector 1, front right hand side sitting in drivers seat, and check its resistance. Compare to one from left bank, you have no codes from left bank, to see if number 1 is good internally. Also test each injector 1 pin for resistance to its body - should be infinity. Test the NR wire on the connector, It should have greater than 12 volts with the ignition on. I would test resistance on 3 and 7 also, since there are codes related to them as well.

 

I am changing injectors. While doing so, I broke this. I have no idea what it is. Maybe pcv?

 

That is the spigot for the vacuum connection to the fuel pressure sensor on the fuel rail.

They are known to crack and leak.

 

I changed all eight fuel injectors and put on a new fuel regulator. She is running great. Thank you for your help.