2001 Intrigue 3.5 engine - Page 2

snicker64 · #16 06-27-2007, 07:56 PM

I'll will check the injectors and be very careful while doing this. I think that there is enough room to pick it up and get the fuel rails away from the intake. When you say power up the pump does this mean just turn the key on and don't crank the engine. Then crank the engine over and watch the spray from each injector to see if each injector has equal pulsing spray.

kmohr3 · #17 06-27-2007, 08:50 PM

I think on this model turning the key on will run the pump for approx 2 seconds. Cranking the car will run the pump until the vehicle starts, or until you let off the key. Look for a pulsating, metered mist of fuel. If one or more is stuck open it will be more like a balls-to-the-wall heavy spray. By the way, is it possible that you have the FPR mixed up with the AIR vacuum solenoid on the rear valve cover? I have a pic if you want me to post it.

snicker64 · #18 06-27-2007, 09:36 PM

The thing that i am talking about looks like a regulator of some type,it has a fuel line connected to it, a electral connection on it,it also bolt to the intake manifold just behind the throtle body adapter on the firewall side of the engine. The FPR sets about 2 inches behind this thing on the fuel rail on the firewall side of engine. The fuel line that runs from this goes back toward the tank with the fuel supply line and the return from the fuel rails. If you want to post the picture of the air vacuum solenoid i sure would appricate it. Can't find a Haynes repair manual for this car any place. We bought the Cd that Chilton has but it wasn't much help.

LittleHoov · #19 06-27-2007, 09:43 PM

The part youre describing sounds like the EGR valve, is it black? kinda....maybe a similar shape to a can, round on the sides, flatter on top. I think thats what youre describing, as thats the only thing in that area that has an electrical connection. That should have nothing to do with a fueling issue though.

Dont quote me on this, but you should be able to at least verify that the injectors are pulsing properly without having to pull the fuel rail. I think you can use a test light to verify the pulsing of the electrical signal.

snicker64 · #20 06-27-2007, 09:55 PM

Yes it is black and is round and it does have a flat place on it, i believe it is on the top. Is that a fuel line attached to it or a vacuum line. The sticker on the line says fuel for some reason. It probably is the EGR valve.

kmohr3 · #21 06-27-2007, 10:37 PM

Even though the injector electrical voltage is ok and working properly the injector can still be stuck open and dumping fuel. Here's a photo of the FPR and AIR valve.

If you can't ID the part email me a picture.

snicker64 · #22 06-28-2007, 07:44 AM

The part that i was talking is in your picture,it sets just to the right of the FPR you can see the line that connect to it under i guess a breather pipe that comes from the valve pan cover. The vaccum line that connect to the FPR comes across this part at the bottom next to a fuel line connecting the fuel rails. Thank for the pictures,looks just like our engine. Hope we can get this engine to start. Went back out put scanner on it, it don't code anything, i guess that is what is making this hard to figure out.

kmohr3 · #23 06-28-2007, 07:16 PM

OK, I know exactly what part you are talking about. It's the EVAP cannister purge valve. It opens under certain conditions and lets the Evaporative Emmission Cannister vent (vapors) back into the intake. It's kind of buried in between the FPR and the EGR valve. It shouldn't have any bearing on why you're getting excess raw fuel dumped into your engine, though. It's #3 in the drawing below.

snicker64 · #24 06-28-2007, 07:26 PM

That is the part that i was talking about. Where is the EGR valve on this engine? We haven't been able to get pictures of anything on this engine. Can you think of anything else that might cause the raw fuel to get into the air intake besides the FPR. As it don't code anything when hooked to a code scanner. Thank for the pictures they are a big help.

LittleHoov · #25 06-28-2007, 07:32 PM

The EGR valve is just to the left of the #3 part shown in the picture above. Its the somewhat canister looking thing that has the fuel line brackets wrapping around it.

snicker64 · #26 06-28-2007, 07:40 PM

Thank you LittleHoov for the imformation.

snicker64 · #27 06-28-2007, 07:45 PM

Haven't had time today to work on the car still trying to figure out where the fuel in the air intake is coming from. The intake manifold on this engine is made out of some kind of plastic or something will stand a lot of heat. Read some where that G.M was having some problems with this type of manifold.

kmohr3 · #28 06-28-2007, 08:27 PM

I really haven't heard of intake manifold problems with 3.5 liter yet.

snicker64 · #29 06-28-2007, 08:32 PM

Thanks for the info. Don't really need any more trouble right now.

LittleHoov · #30 06-28-2007, 08:40 PM

Have you gotten the chance to try running it with the FPR disconnected? See if it will stay running like that.

Also be sure that if you are removing the fuel rail and etc to test to injectors, that you do so on a cold engine. I know thats kind of a "duh" statement, but it doesnt hurt to say it again.

If you want extreme safety overkill, you can go ahead and disable the ignition system of the vehicle by pulling relay #13 from the underhood fusebox. The car will still crank, but it will have no spark.

Im having trouble wrapping my mind around the idea of one or two stuck injectors causing all 6 cylinders to run rich, but I guess its possible. Try the FPR first though, especially since you already ordered one.

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