I found my broken part in the Jaguar service book. It is listed as a "positive crankcase ventilation hose". Partsgeek has it for $56.00. Click ---> here

I'm also going to order the vacuum induction hose and a new PCV valve too. Why not.

More to come, stay tuned...

 

C2S35164

 

Thanks Dell.

 

Update:

Today I replaced the positive crankcase ventilation hose from above along with a new PCV valve. The vacuum induction hose has not come in yet but I put everything back together. To my surprise it started and there were no codes like before on the CEL. The ones listed above cleared out.

After allowing it to idle in the drive way for a while to come up to temp and check for any kind of leaks or anything goofy, I was satisfie I was good to go around the block on a test drive.

Car ran fine for a while and then at a stop sign I got the amber light, CEL and the cruise not available message! Also get the original Right and Left Bank too lean fault code.

Not sure what's left to do other then replace the O2 sensors for the right and left bank and or try and smoke the engine completely and see if and comes out somewhere? I don't have a smoke machine to do that but there are some folks on YouTube that made one cheaply????

Also, one of the electrical plugs housing disintegrated in my hand from being old. The electrical two wires still plugs into the opposite plug terminals but I'd like to order a new plug harness and replace it corrrectly.

Anyone have any further thoughts on this CEL right and left bank too lean fault codes?

I'm getting frustrated and not sure what way to go next.

Hopefully Dell or someone can help me ID this plug.

Thank you,

 

Update:

The saga may be over...hopefully.

So continuing to get the Right and Left bank too lean codes and thinking about everything I’ve done and what else I could do to diagnose this problem I decided to build a pickle jar smoker to see if I can introduce the smoke into the engine and see where it comes out.

Spent about 15-20 bucks at harbor freight. Items needed. Pickle jar, bicycle pump, Bic pen, vinyl tubing, part of an old cotton tee shirt, baby oil, drill and drill bits, epoxy. Videos on YouTube on how to assemble so I won’t go into details.

I removed the fresh air intake filter box and put a glove over where the throttle body opening is. I cut off part of one finger. I secured the glove with band clamp that holds the flex hose on normally. I took the cut off finger part and slipped it over the positive crankcase ventilation tube and zip tied it on there so no smoke would come out there. Then I put the vinyl hose from the smoker into the cut off finger part and zip tied them together. This is where I introduced the smoke.

Smoker worked great for such little investment. To my dismay, the smoke was coming out the bushing on the top of the manifold going to the evaporative purge system solenoid. I had already replaced them during this process as I was getting major leaks out of the old original ones. I guess after removing the vacuum lines a few times to remove the manifold I broke an O ring for the seal on the one??? I know they were holding after I replaced them as I used a smoke tube from work that blew smoke around them and they were no longer sucking the smoke in after I replaced them. I guess that is way better then seeing smoke come out of under the manifold somewhere and have to disassemble all that again......So maybe that was the easiest fix I could hope for???

So I put some Permatex high temperature gasket maker around both of them and decided to see if that will fix the problem long term. Let it set up for an hour and then re-smoked the engine. No smoke coming out anywhere I could see so I put it all back together, cleared the codes and went on a long slow test drive around the neighborhood. The CEL only seems to come on at idle or slow speeds. No issues so I guess I’ll find out for sure going to work and back this week. Hopefully that was it.

I also tried to find the electrical connector in the post above but SNG Barrett and Parts Geek said they didn’t carry them. I emailed them a pick. The service manual only calls them an electrical connector without any further detail. I know it is the bottom plug for the throttle body. Perhaps a trip to a junk yard might be my only shot unless I can find a definitive name or part number. .

I’ll post back in a week or two and let you know if I have any more issues.

Thanks for all the suggestions

 

Update:

I have gone all week with out throwing any codes until today. This time its not a P0171 & P0174 Right and Left Bank Too Lean. This time I’m getting a P0442 Evaporative Emission System Leak Detected (small leak).

Tomorrow I’ll smoke the evaporative system and see if I can find any leaks there. I read Dell’s post on the leak in the fuel line rubber hose and I hope it’s not that.

 

This thread has been a wonderful resource in trying to solve a difficult problem, but I'm kind of at a loss at the moment. My 2005 X-Type Sport had a bad downstream Bank 1 O2 sensor and high short and very high long-term fuel trims (near 20%) which I thought might be from the O2 sensor. I took off the intake manifold to get to the O2 sensor and decided to also change the plugs while I was in there and used all new gaskets and seals when I re-installed the manifold. The fuel trims have only gotten worse and the ECU is throwing P0171 and P0174 codes. The fuel trims drop down to near zero down as soon as the engine rpm's even slightly increase.. Also, before the car is fully warmed up, when I start to accelerate it feels like the engine is shutting down until I let up on the gas for a few seconds after which it seems fine and accelerates smoothly. After that I can't seem to duplicate the problem. The fuel pressure is steady at 50-55 psi during all of this. Has anyone else experienced something similar this and, if so, how did you fix it? I've ordered the Big Three vacuum hoses which will arrive in a day or two, but if any of them aren't the problem, I've hit a wall.

Thanks for any help you can provide.

 

You may find a smoke test helpful.

 

Sounds like a big vacuum leak I am guessing the P0171 and P0174 were not present before you took off the manifold. You sure the gaskets were all seated properly and everything tightened down? Seems like the logical place to start. As was mentioned a smoke test should identify where the air is getting in. Maybe you disturbed or dislodged a hose. I'm sure you can get to the bottom of it. Good luck.

 

Thanks for the suggestions. Prior to my replacing the bad O2 sensor the long-term fuel trims were almost as high as they are now, but never threw the P0171 & P0174 codes. Whatever this is, I must have made it worse. I borrowed a smoke generator and will give it a try tomorrow. If I don't find the leak that way, I'm going to remove the intake manifold. Maybe something slipped when I was re-installing it. The weird thing is it idles smoothly at 750 rpm and seems to accelerate well. I'll update this in case it might be of help to someone else.

 

Borrowed a smoke generator and tested for vacuum leaks. The "Big Three" hoses themselves weren't leaking, but the bushing and o-ring system on two of the hoses were. Replaced all of the hoses anyway. Incidentally, the bushing fitting part # is: C2S15816 and it's available for around $ 20. The purge hose (C2S16505) from the dealer was $ 124 (yes, you read that right) which is outrageous, but I needed to get the car back on the road, so I paid it. I've had luck buying parts from vendors in the UK, such as autoreserveparts on Ebay. Their price for the purge hose was $ 28.00 (including shipping!). If you have the time to wait a week or so, it's well worth it.

The LT Fuel Trims came down to around 15% on Bank 1 and 10% on Bank 2, both of which are still too high; the ST Fuel Trims are near zero. Any suggestions on other potential vacuum leak trouble spots? I'd to get the LT Fuel Trims under 10%.

Thanks.

 

In the previous post I reported that the LTFT's were down to approximately 15% and 10% for Banks 1 & 2 respectively. Here's where it gets interesting. When I purchased the car I had installed a K&N air filter in the hopes of getting a slightly better throttle response. I wondered if this filter could be contributing to my high fuel trims at idle, so I swapped back the original air filter. My LTFT's instantly dropped to 6.47 for Bank 1 and .78 for Bank 2! Did some research and found that this was a fairly common situation on other car models and was wondering if anyone else on the forum had experienced this and, if so, what is the reason behind it? I would have thought that the ECU could compensate for better airflow at idle without throwing lean codes.