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#1 | ||
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AudiWorld Senior Member
Garage is empty, add now
Join Date: Sep 2007
Location: Anchorage Alaska
Posts: 632
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#2 |
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AudiWorld Senior Member
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Join Date: Sep 2006
Posts: 1,139
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But that's good news!
Because with codes you can actually find out whats happening. For most stuff it's a pick and replace thing (granted its not without tis costs), and for somethings look at "why" not just.. replace that one thing or you may be doing it again.. Remember some things are a result not a cause. Good Luck! -Scott
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_________________ Scott '90 V8 Quattro Papryus Metallic (SOLD) '90 V8 Quattro Pearl Metallic '90 V8 Quattro Crystal Silver Metallic '90 V8 Quattro Pearl Metallic (Parts) |
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#3 |
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AudiWorld Super User
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try cranking for 2-5 seconds
wait 3 seconds crank again. The one think I really like about domestic vehicles is how they prime the fuel system with ignition on (i.e. run the fuel pump for a few seconds). Bosch Motronic vehicles will not run the fuel pump unless the vehicle has an rpm of >200 (or something like that)... which means you have to crank the car to turn on the fuel pump. If there's any issue with holding pressure in the fuel system, which there usually is after 18 years, it takes it awhile to build pressure. |
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#4 |
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AudiWorld Senior Member
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Scott..
While I agree wit (its a Philly thing) you, if you have to crank the car for more than 5 seconds, chances are that the check valve on top of the fuel pump (or the pump) is failing. On my DD, the pump has made noise (you can hear it inside the car) since I got it a year ago, and about a month ago, I started to have to crank it, turn the key off and it would start up on the following attempt (every time). I replaced the entire pump (with the check valve) Bosch 040 and the included check valve and the issues went away completely.. starts right up (<5sec). While the pump was noisy and was still functioning "fine" I could have reused it becuase the real issue was a leaking check valve. So I could have just replaced the valve, but seeing that I was there anyway.. It's a fairly "easy" job, just not one I wanted to do twice.
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_________________ Scott '90 V8 Quattro Papryus Metallic (SOLD) '90 V8 Quattro Pearl Metallic '90 V8 Quattro Crystal Silver Metallic '90 V8 Quattro Pearl Metallic (Parts) |
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#5 |
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AudiWorld Super User
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While it's true the external check valve on the pump will cause the extra cranking problem, so will leaky injector seals and/or the pressure regulator on V8s. By this age, most fuel pumps will have needed replacement, and the newer models (unless you stick with the old ones) have internal check valves.
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#6 |
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AudiWorld Senior Member
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So I call up the shop to get work done and have them check the codes. Oh yah it is the start of winter here in Alaska. So they say they are backed up for a couple of weeks. They said it is because of people who can't take there tire problems to a tire shop. So they haven't been working on customers cars because they are doing tire jobs. Makes the mechanics mad because it is a repair shop that does tire jobs too. Thanks for the input. Yah it never takes more than 5 seconds to start the car. Just that one time. Can the engine get hot then form condensation and when it starts to go below freezing at night freeze?
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#7 |
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AudiWorld Super User
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I know my check valve is bad. I wrote that reply this morning so I wasn't really... awake. I intended to talk about the valve but... no coffee.
Mine is bad but I haven't really had the big enthuisitic inclination to go digging around in my gas tank! I'll be doing a pump here probably next year, though. I'll change it on a nice day, with an empty tank before it fails on a nasty day with a full tank.
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#8 |
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AudiWorld Super User
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If he has to crank for 15 seconds, I'd be willing to bet it's not a check valve. I don't know why I even replied.. ah well.
I'd just be warning about cranking for 15 seconds straight... you'll cook your starter with that. I'd count the seconds it takes (accurately) and count how many revolutions it takes. I wouldn't, on the other hand, crank for more than five or six consecutive seconds. |
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#9 | |
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AudiWorld Senior Member
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Quote:
Anything that gots hot and then cools has the ability to form condensation, provided that there is enough moisture in the air. If the dew point is below freezing, the chance of condensate forming are almost nil, as the air temp is already below the point at which water freezes. Granted that may not specifically answer the questions, but may give you what you need.
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_________________ Scott '90 V8 Quattro Papryus Metallic (SOLD) '90 V8 Quattro Pearl Metallic '90 V8 Quattro Crystal Silver Metallic '90 V8 Quattro Pearl Metallic (Parts) |
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#10 |
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AudiWorld Senior Member
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I'll be doing a pump here probably next year, though. I'll change it on a nice day, with an empty tank before it fails on a nasty day with a full tank.
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