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Troubleshooting & Technical Questions & ModificationsHave technical or modification questions about the Crossfire?
Find out the answer, or give advice in here!
Needswings does have a new pump & filter bracket. LINK - Fuel pump & filter bracket That's what I used when I did mine.
You're lucky your upper bracket to the trunk floor is still nice. Mine was all rusted.
No clue ion the canister shutoff valve.
" Does anybody know the purpose of the canister shutoff valve? "
The shut off valve is used to test the pressure in the tank. It's normal position is open. It will only be closed when the PTCM wants to test the gas tank and EVAP system for leaks. The PTCM will direct the shut off valve to close and then draw a very low pressure on the system ( like 1/2 lb. PSI ). If your system is leak free the vacuum pressure is noted, if no pressure the PTCM will recognize a leak and set a DTC.
If that valve is clogged or stuck in the closed position you will draw gas into the EVAP canister.
I believe you can still find unused canisters, but the old one will work. Just let it dry out, blow a little low pressure air through it to be sure it is dry and re-use it. I do not think re-using is a good idea, but it should work. However it will have a reduced capacity.
That entire area needs to be cleaned. You need a new shut off valve and hopefully you can find a new canister.
PS There are canisters with the shut off valve attached on ebay $100 ~ $180
Last edited by zip439; Jul 29, 2025 at 02:23 PM.
Reason: added pa
" Does anybody know the purpose of the canister shutoff valve? "
The shut off valve is used to test the pressure in the tank. It's normal position is open. It will only be closed when the PTCM wants to test the gas tank and EVAP system for leaks.
You did a much better job of explaining this than the manual.
I have my charcoal canister just sitting and letting it air out. I will test the valve and make sure it is working correctly.
Measured the fuel line sizes. I thought about ordering on amazon but I did not see the need to 10 feet of every hose size. LOL. I will probably go to my local car quest and get by the foot.
Fuel line sizes
6mm
8mm
10mm
The 10 mm from the tank is a manufactured hose and should not need replacement.
Tank hose 10mm uses a 24mm clamp
Clamp Sizes for the Charcoal Canister and Tank to Pump
[img alt="Camp Sizes
"]https://cimg9.ibsrv.net/gimg/www.crossfireforum.org-vbulletin/692x424/crossfire_tank_canister_clamp_sizes_6c8b19ddefb186 d2a31898318beb4003eda178fd.jpg[/img] Camp Sizes
Did some painting for the brackets
Before Primer Purty
Last edited by xintersecty; Aug 8, 2025 at 09:26 AM.
OK Everything has been put together. I need to put gas in the car run it a bit and then check for leaks.
First I tested the charcoal canister. I needed to identified the ground wire which is typically the brown wire. Ground goes to pin two. Hot goes to pin 1. Charcoal Canister Pressure Valve
I used two small wire connectors that are typically used for breadboarding in the electronics world.
Green hot, blue ground
I used a 12 volt source and made sure it worked. Unfused 12 volt source and valve
The charcoal canister shutoff valve is normal open. Open
Under test Closed
So the valve checked out. So I put that back on the canister and into the car.
I put everything back together.
Fuel pump and fuel filter
Used fuel line clamps instead the screw clamps when somebody replaced the fuel filter.
OK Everything has been put together. I need to put gas in the car run it a bit and then check for leaks.
First I tested the charcoal canister. I needed to identified the ground wire which is typically the brown wire. Ground goes to pin two. Hot goes to pin 1.
Charcoal Canister Pressure Valve
I used two small wire connectors that are typically used for breadboarding in the electronics world.
Green hot, blue ground
I used a 12 volt source and made sure it worked.
Unfused 12 volt source and valve
The charcoal canister shutoff valve is normal open.
Open
Under test
Closed
So the valve checked out. So I put that back on the canister and into the car.
I put everything back together.
Fuel pump and fuel filter
Used fuel line clamps instead the screw clamps when somebody replaced the fuel filter.
I like the red bracket.
I hope that all goes well!
OK on testing last night I found a problem. I need to replace this clamp. This is the fuel line that goes to the regulator and onto the engine. With the new fuel filter can I just replace the hose and regulator? That means the regulator will be removed from the system so I can replace the old hose.
To be on the safe side I would also replace the fuel cap with a new one. The cap is duel acting (both pressure and vacuum) which helps regulate the pressure in the tank. With all the work you have done seems best to get that changed and eliminate a possible source of the problem you where having.
Did you replace the fuel line damper? It is show in you post #19 fourth picture down.
To be on the safe side I would also replace the fuel cap with a new one. The cap is duel acting (both pressure and vacuum) which helps regulate the pressure in the tank. With all the work you have done seems best to get that changed and eliminate a possible source of the problem you where having.
Did you replace the fuel line damper? It is show in you post #19 fourth picture down.
I had already replaced the fuel cap as I had that stupid fuel pressure code. No I did not replace the fuel regulator going to the motor. I kept mine. There is another post on the rarity of that part. I replaced the clamp and got fuel system tested. I have driven the car twice in out and back sorties. . I went over to my GF and we got ice cream. The next day I took her to a movie and we saw the naked gun. While entertaining in the movie theater, you can wait until home video. It was a decent flick.
So far no codes and I was able to fill the car with gas. Now to fix the other little things before the fall rally.
So that anyone reading this thread does not get confused the damper shown in the picture #4 of post 19 is not a regulator. It is a damper that prevents surges in the fuel line to the engine thus maintaining a steady non fluctuating pressure and volume of fuel to the injectors. On the Crossfire the fuel pressure regulator is integral to the fuel filter. Dampers are pretty much generic so long as the size of the attached fuel line is the same. However, the Crossfire fuel filter is specific and not interchangeable because of the fuel pressure regulator function. (not to get into manual regulators and custom setups)
I had already replaced the fuel cap as I had that stupid fuel pressure code. No I did not replace the fuel regulator going to the motor. I kept mine. There is another post on the rarity of that part. I replaced the clamp and got fuel system tested. I have driven the car twice in out and back sorties. . I went over to my GF and we got ice cream. The next day I took her to a movie and we saw the naked gun. While entertaining in the movie theater, you can wait until home video. It was a decent flick.
So far no codes and I was able to fill the car with gas. Now to fix the other little things before the fall rally.
I had a fuel leak from under car and was from the charcoal canister but it happens when the engine is NOT running but ignition on so pump running. So today removed pipes from the fuel filter/regulator the one that goes to the canister was full of fuel so guess that the diaphram in the filter/regulator has failed so changed out F/R but can't test at moment because one of the new clips failed on install so fingers crossed its fixed when i get some more clips
I had a fuel leak from under car and was from the charcoal canister but it happens when the engine is NOT running but ignition on so pump running. So today removed pipes from the fuel filter/regulator the one that goes to the canister was full of fuel so guess that the diaphram in the filter/regulator has failed so changed out F/R but can't test at moment because one of the new clips failed on install so fingers crossed its fixed when i get some more clips
Make sure you get the right fuel hose pressure clamps. Most auto stores have them. Measure the hose diameter and get a clamp to match.
I had a fuel leak from under car and was from the charcoal canister but it happens when the engine is NOT running but ignition on so pump running. So today removed pipes from the fuel filter/regulator the one that goes to the canister was full of fuel so guess that the diaphram in the filter/regulator has failed so changed out F/R but can't test at moment because one of the new clips failed on install so fingers crossed its fixed when i get some more clips
be sure all liquid gas has drained out of the charcoal filter and give it a chance to air dry before hooking it all back up.
BTW as an update, I got the stupid high pressure gas tank code again. Sigh. I will pull the purge valve in the engine compartment and test it. It's actually new. I still have the old one.
BTW as an update, I got the stupid high pressure gas tank code again. Sigh. I will pull the purge valve in the engine compartment and test it. It's actually new. I still have the old one.