r/CrownVictoria

Interior is great, exterior is great, everything works, 143k miles, Got it for 2500

So I went on a togue with some friends in my heavily modified 04 CVPI and it feels like it wants to bite your head off (though great fun) at the limit. Twitchy and throttle input had to be very carefully metered lest you be wrapped round a tree. Is anyone familiar with ways to make these things less twitchy when you’re pushing them? I have some stiffer custom fabbed rear watts arms and some front poly bushings apart from the obvious go fast stuff. Just the limits of solid axle?

OK, let's try this again. I was getting errors previously when trying to post.

So you can kind off see the sticker all jammed up in there, the sticker was on top completely covering or whatever, the 2nd Pic is the other strut. I'll admit, I have no idea what they are supposed to look like from the top. Normal, not normal? I appreciate it and I'm sorry for being dumb.

My 2000 Lincoln Towncar with a Pypes Street-Pro muffler single exit exhaust.

For anyone who really wants to wake up their panther, an 01+ PI head swap onto a NPI 98-00 bottom end makes these cars pretty quick and it’s so much fun to drive now. Gives higher compression and better flowing heads. 0-60 in 6.78 seconds and runs the 1/8 in 10.01 at 72.4mph

Found this while digging around, thought it was neat. If they could see how much shes changed since

Husband said it's great for $150. Looks hella natural. Just in case if someone's out there looking around. Bluetooth and can do backup camera and can play video via a USB dongle but it's not that great.

Car: 2003 Ford Crown Victoria LX, 98k miles

Situation: So yesterday morning around 6am I noticed that my car was running a little bit rough. I checked the codes and had a new code, P1131 (lack of HO2S11 switch, sensor indicates lean). I also checked the oil and it was low (it's been about 2k miles since my last oil change), so I topped it up. This didn't fix the problem though, and the car was still running a little rough.

I have a BlueDriver Model LSB2 code reader, and it showed some of the most common fixes for the lean code being replacing/cleaning the MAF sensor or replacing O2 sensors. So I cleaned the MAF sensor with MAF cleaner and that seemed to fix the problem.

After that, the car ran perfectly fine all day from about 7am until 4pm. I do gig work (mainly Instacart & Walmart Spark), so I was driving all throughout the day, but prob under or around 100 ish miles today.

Then around 4pm, while I was driving, I suddenly heard the sound in the video accompanied by roughness and shaking. I immediately pulled into a parking lot, turned the car off, and tried to diagnose what was wrong but couldn't figure it out. I didn't notice anything obviously wrong after inspecting the engine bay. I checked the oil again and it's still at the correct level, the serpentine belt seems fine, the intake hoses seem fine, and I checked the electrical connectors I could see.

After a while I decided to record the video included to show or post about it later.

The really confusing part is that this didn't result in any new check engine codes. There are still only two current codes:

- P1406 (DPFE sensor downstream hose unplugged or clogged). This has been on for a long time and has never really affected anything noticeably, as far as I can tell.

- P1131 (lack of HO2S11 switch, sensor indicates lean). This is the code that first popped up around 6am that morning when the car was only running slightly rough.

That's the part that's really throwing me for a loop. The P1131 came with the slight roughness that morning, then cleaning the MAF seemed to fix that completely and the car ran buttery smooth for roughly 9 hours. Then around 4pm this much more severe roughness/shaking and the sound in the video suddenly started, but there aren't any new codes.

I would think something like a bad spark plug, ignition coil, or fuel injector could be the issue but idk why Im not getting any codes for that. Maybe if I let my car run longer some new useful code would appear but idk if it's risky to do so.

The car is currently parked in a grocery store/shopping center parking lot about 50 mins from where I live, and I'm trying to figure out whether I can diagnose/fix this myself there or if I need to get it towed. I really prefer to do everything myself unless it's almost impossible to do so, I even replaced the intake manifold a couple years back myself btw

TL;DR: Around 6am car had a new P1131 lean code and slight but consistent roughness. Cleaned the MAF and the car ran buttery smooth for the rest of the day until around 4pm, when it suddenly started making the sound in the video along with severe roughness, even at idle. No new codes afterward. Anyone have an idea what this could be or what I should check next?

Coolant leak. Manifold removed.
The chamber on passenger front of heads has a groove on the corner that my fingernail catches.

There is black residue, that is not the groove. The groove is on the bottom right side of the chamber as it is pictured. The black residue area is mostly flat now.
I’m wondering if someone in the past already used a gasket maker compound to treat the grooves?

This is my first intake manifold job so I’ve struggled to get as clean as possible. Wondering at what point I can stop and if this needs further attention, or maybe I send it against general advice I have already read…

Thanks, Y’all.

Can’t explain it but I love it
2005 Crown Vic LX about 225,200 miles
Still figuring out what I’m gonna do with it in terms of cosmetics and what have you.
Just getting the hang of driving a boat and seeing what needs to be addressed on it for now. The belt n some bulbs were replaced so far.
Check engine light came on for a bit but then went away with a P0307 code, so my first step is gonna be replacing all the spark plugs and coils.