Service Bulletin concerning Crown Vic rough idle

[Curtis]

These pdf versions of the bulletin cover rough idle, lost power, bad teeth and acne... as well as what to do about it.

[peakay]

Re: Service Bulletin concerning Crown Vic rough idle

Thanks for posting here Curtis...you saved me the trouble! I hope this helps the NGVic community.

[CraziFuzzy]

Re: Service Bulletin concerning Crown Vic rough idle

Well, makes me wish I hadn't spent a few hundred dollars on changing out the O2 sensors... mine was stuttering like this, and would give me o2 sensor failures. Changing them out seemed to fix it for a short duration, but it came right back. It isn't every start, but often enough to annoy me, especially since i haven't been getting the power i'm used to either.

[peakay]

Re: Service Bulletin concerning Crown Vic rough idle

I'm in the same boat. My recommendation would be to clean the injectors asap as i am afraid it may have burned out one of my cats.

[turbocohen]

Re: Service Bulletin concerning Crown Vic rough idle

Oil contamination tolerance was the #1 issue 17 yrs ago and it still is. There is a replacement injector from Siemens (soon to be Continental) that is close enough to the bosch calibration that manages oil much better. It is used by Opel and daimler in the EU but I am not sure that is the same cal.
good luck, T

[MiamiCNG1]

Re: Service Bulletin concerning Crown Vic rough idle

Hello, I'm new to the forum I have a 1998 CNG Crown Vic but it's missing the main CNG computer that goes in the front of the car. I bought this from a local police auction, they said the car ran fine but the computer broke. I am in Miami,FL and unfortunetly most people don't even know that CNG cars exist here. (No Parts) I tryed Ford but no luck there, they said it was on backorder I've been waiting for 2 months now.Can anybody Help me?

[holtek]

Re: Service Bulletin concerning Crown Vic rough idle

From the posted service bulletins, I get the impression that the fuel injectors require some residual oil in the fuel stream to remain happy. That would kind of be a problem if you used a home fueling appliance exclusively since they don't use oil. I use a Fuelmaker phill with my crown vic and civic GX and only rarely get a fast fill since the nearest station is 20 miles away from me!

[cngmike]

Re: Service Bulletin concerning Crown Vic rough idle

I would guess that you bought your Crown vic on the used market. Most station operators are not to fanatical about oil carry over. So there is probably enough oil in your tanks to cover the the 2 parts per million that is necessary for the injectors.

[Techie]

Re: Service Bulletin concerning Crown Vic rough idle

From the posted service bulletins, I get the impression that the fuel injectors require some residual oil in the fuel stream to remain happy. That would kind of be a problem if you used a home fueling appliance exclusively since they don't use oil. I use a Fuelmaker phill with my crown vic and civic GX and only rarely get a fast fill since the nearest station is 20 miles away from me!

Have you checked your fuel filter? That should be a good indication if there is any oil in the system. If too much oil is in the system, filter housing will be full. Ford will tell you to drain it. I would say drain some, but leave about 1/4 to 1/8 of level in it. I heard of a few guys adding WD-40 to filter housing but I have never seen it or tried it.

[kameron13462]

Re: Service Bulletin concerning Crown Vic rough idle

Question to the crowd: The TSB is somewhat nebulous on whether the coalescing filter should be present during the injector fluid operation. It states to fill the bowl 3/4 inch from the top.

So - does that mean to install the coalescing filter, fill the bowl 3/4 inch from the top, reinstall, then run engine?

Or - does that mean fill the bowl 3/4 inch from the top, reinstall without the coalescing filter in place, then run engine?

Please keep in mind this is someone asking a question who wants to conduct the service and has not done it before.

Thanks!

Kameron

[CONEBOY]

Re: Service Bulletin concerning Crown Vic rough idle

Do not install filter during injector cleaning.

from TSB 03183:

Step 5 "reinstall the filter bowl"... (never says to reinstall the filter)

Step 9 "drain the cng coalescent filter bowl, replace coalescent filter element, drain plug"... (put everything back)

[kameron13462]

Re: Service Bulletin concerning Crown Vic rough idle

Thanks for the verification, Coneboy. When I conduct the service on my 2003 Crown Victoria, I'll try to remember to take photos to post on cngchat.com for future reference.

- Kameron

[Surfdancer]

Re: Service Bulletin concerning Crown Vic rough idle

Make sure you get that stuff through the regulator, fittings and lines quickly. When I was working with Ford Engineering on testing this stuff, we found out how aggressive this stuff really is. If left in contact with rubber in the regulator or o-rings in the fittings, they will soften and swell in short order.

Personally, I have not used this cleaner in my dedicated F150. I service mine every 24,000 or 36,000 miles by unplugging the "fuel pump" fuse (to deactivate the solenoids on the tanks), run the truck until the pressure is consumed and the engine stalls, then disconnect the low pressure line from the regulator discharge (there may still be 30 to 40 psi left, so be prepared for a little venting of gas - and check the fitting to make sure the o-ring is still in place).

With the low pressure line hanging down, I let the oil drain out of it for a few minutes.

After that, I button it up and replace the fuse.

Oil gone - no jelly in fuel injectors from oils and heat.

[spazntwitch]

Re: Service Bulletin concerning Crown Vic rough idle

Champion Motors in Salt Lake on 90th South advised that we need to pay $270 for a fuel injection cleaning and advised it needs to be done every 15,000 miles. Is this a fair price?

Our Ford F250 won't start at all in the cold weather and we are waiting to get the vehicle towed from Fillmore up there.

[Lancer Automotive Group]

Re: Service Bulletin concerning Crown Vic rough idle

Ask them if the $270 is just for a fuel system flush or do they actually remove the injectors and clean them.