P0455 - My Saab is really going to kill me financially- Now P0455 previous P0300 - The Saab Link Forums

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Old 05-23-2016, 05:31 PM   #1
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P0455 - My Saab is really going to kill me financially- Now P0455 previous P0300

So I posted last week about car continually cranking but not starting. https://www.saablink.net/forum/car-pr...nly/112129.htm

The first shop said initial issue was the fuel pump. Mind you the fuel pump was replaced in December 2015 as the car when I bought it had a bad fuel guage so they replaced the pump and the fuel assembly

So I had them replace the fuel pump and car ran for 2days until I got CEL P0455. This code wasn't a big deal with my previous Volvo so I went to drive it as normal hit 50-60% throttle and car boost gauge went crazy and it shut it self off. I then let it sit to try and restart it and the car wouldn't idle and would shut it off by itself. When I was on the side of the road I checked for a new code and only got P0455

Got it towed to second shop AAA recommend. The looked at it in the morning and they only got P0300 CEL. They reattached a hose to the throttle body which came loose, reset code road test and code was gone. They also said spark plugs need to be replaced so I let them do that.

Picked up the car this morning got me too and from work no CEL at all. Went to go out after dinner and CEL light P0455. I took back to second shop and suddenly they are 100% sure they didn't see a P0455 when they checked the car. Didn't visually see any leaks so I left them and will just baby this car.

I am at my wits end with shops in my area none of them are willing to even put in the parts I want in my car. I am ordering genuine Saab parts and I show them and they don't want to touch it

Last edited by Rob2003-9-5-Linear; 05-23-2016 at 05:34 PM.
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Old 05-23-2016, 06:33 PM   #2
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Is this a 4 cylinder or 6 cylinder car?


Here's the diagram that WIS has for the components for a 4-cyl P0455 Evap Serious Leakage in System




P0300 is Random Misfire Detected
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Old 05-23-2016, 06:53 PM   #3
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Actually. This is a long shot because it would have to be really bad to cause a massive leak, but I'm going to throw down a guess that it's related to the fuel pump replacement, and whoever did the work messed up the o-ring gasket that seals the top of the fuel pump canister to the tank. It's pretty easy to mess it up. If you fill the tank up the entire way do you smell fuel? Pull up the back seat and remove the access cover, is it wet on the top?

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Last edited by Drew in Houston; 05-23-2016 at 06:59 PM.
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Old 05-23-2016, 07:35 PM   #4
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Originally Posted by Drew in Houston View Post
Actually. This is a long shot because it would have to be really bad to cause a massive leak, but I'm going to throw down a guess that it's related to the fuel pump replacement, and whoever did the work messed up the o-ring gasket that seals the top of the fuel pump canister to the tank. It's pretty easy to mess it up. If you fill the tank up the entire way do you smell fuel? Pull up the back seat and remove the access cover, is it wet on the top?

Drew it is the 4cyc 2.3t

And I am willing to bet it you are right. There is a slight odor or fuel I figured it was because I had my supposedly faulty fuel pump in the car in the car to bring back to my regular garage in NY for them to get them warranty on their part. Though I have taken the old fuel pump out of the car and smell is there after driving a bit but not when I start up. I will lift up the seats tomorrow and inspect for wetness tomorrow.

Either way I am limping home to garage back home end of this week luckily I can get a back up car while I am in NY while they try to fix potential problems these two non-specialist garages couldn't fix

The problem last week my shop at home thought it was the DIC. They had a conversation with the garage up by me and were not impressed with them which made me seek out a AAA approved shop. I like their towing their recommended shops are crap

Last edited by Rob2003-9-5-Linear; 05-23-2016 at 07:41 PM.
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