Cascade Crew

Quasi-Traction · Posted: Mon Nov 19, 2007 12:56 pm Post subject: Had enough?

I sure have.

Girlfriend's Volvo Still doesn't run. 4 Brand spanking new injectors and Fuel pressure regulator, hell, I even deleted the leaky cold start injector.

It had a problem before where whenever you filled up with gas, the car reaked of fuel for like a day or so. Her mileage was dropping with each tank, and finally, the car barely starts and just dies again in about 30 seconds. Giving it any throttle kills it instantly.

I figure its gotta be fuel related.

I checked the fuel pump and fuel pump relay voltage with the key on. Seems ok there. pulled each one of the injectors. Two would leak fuel. Most of em looked questionable anyways, and the CS injector was definately leaking.

So I get the new injectors and FPR in last night. VOLA, she starts up.
Idle was a little irratic...turns out I had a couple vaccum lines connected in the wrong places. Change that around, and it has a nice smooth 900rpm idle. I take it around the block, seems to drive ok, but acceleration seems a little weak. I chocked it up to me being used to my car, and this being a 280K 4 cyl moving a 3800lb car.

I decide to drive the car to school today, just to make sure everything was ok.

Started it right up, threw it in reverse, get halfway out the driveway. Dies. Won't restart. Hickups like it wants to start, but never does.

I decide to pull #1's spark plug and check it. Soaked in gas...just like before with the leaky injectors...WTF? I can't see any visual leaks from the new injectors...

IAC is also buzzing when the key is in the on postion. Even with that unplugged, car still won't start.

I'm at my wits end...help?

Dewey316 · Posted: Mon Nov 19, 2007 1:09 pm Post subject:

Something telling the injectors to fire longer than they should? How does it meter the fuel, MAF, MAP ??? Temp correction? You are probably going to need to start checking sensors, maybe get on a volvo forum, and find out how to datalog, and see what your sensors are reading.

--John

blue89 · Posted: Mon Nov 19, 2007 1:19 pm Post subject:

Did you check fuel pressure and leak down? Most shops can also check volume flow if you can get it there. What about injector resistance?

How are the cap/rotor looking? Spark voltage okay?

You might be leaking fuel on fill-up because of a cracked fill tube on the tank. Funny things also happen cause of faulty injectors. If one is fouled or burnt up it will cause the other to run pig rich. Also if the coil is putting out weak spark.

What year is this thing? Lots of things can give you the symptoms you are experiencing. I always try to check the easy stuff first cause, well, its easy.

Kage87Z · Posted: Mon Nov 19, 2007 3:12 pm Post subject:

Have you tried cussing at it in Swedish?

Twilightoptics · Posted: Mon Nov 19, 2007 5:32 pm Post subject:

Twilightoptics · Posted: Mon Nov 19, 2007 6:18 pm Post subject:

Did you actually energize the fuel rail with the injectors not in the hole so you could physically see them leaking?

Sounds like a sensor problem to me too.

Quasi-Traction · Posted: Mon Nov 19, 2007 9:33 pm Post subject:

Twilightoptics · Posted: Tue Nov 20, 2007 7:06 am Post subject:

You can check the relay and pump easily. Just jumper the pump to on with a fuel pressure gauge on. Watch the pressure make sure it stays constant.

If it does. You're fine there.

I doubt the relay would kick off after 30 seconds unless something was telling it to. But it's possible. You can also jump the relay to on and watch the same. If it doesn't magically click off I'd say it's fine.

Sellmanb · Member Joined: 30 Nov 2004 Posts: 727 Location: Tigard, OR

having a shop diagnose it shouldnt be more than 100 dollars, which would end up being less than throwing parts at it. Have them diagnose it and order the part for you, you can put it on yourself, problem solved.

Al Hasse · Posted: Tue Nov 20, 2007 12:35 pm Post subject:

Quasi-Traction · Posted: Tue Nov 20, 2007 8:01 pm Post subject: