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-   -   no start after wash (https://www.saablink.net/forum/showthread.php?t=76465)

saabfan9 08-12-2013 07:21 PM

no start after wash
 
hey guys I have a 2000 9-3 se with a 2.0 turbo, 90,000 miles ran fine until I had the porters at work clean the car up (yes under hood as well) I know anything can happen but these guys clean our dealership cars all day/every day so this was nothing out of the ordinary for them..... well they could not get the car to re-start fuel pressure good 40+ psi I swapped the DI with my 9-5 aero close inspection of all connectors no signs of any water and no codes...i'm going to let the car sit over night to "dry" out....any other ideas? thanks for the help guys ......forgot to mention all fuses good, pulled the plugs yes old but the car was running fine a 1/2 hour prior nothing out of the ordinary as far as raw fuel did get a slight smell out of the tail pipe....not sure what else to check

Turbo00 08-13-2013 04:02 AM

When you say doesn't start, it just cranks and doesnt catch?

I'm betting it's not that water got somewhere, it's that they knocked something loose depending on how much scrubbing they did. Double check the main wiring harness & all connections, special attention to the DI, MAF, BPC, etc. Never know, may start after drying out. Could also be an unrelated issue like CPS that just happened to manifest at a weird time.

saabfan9 08-13-2013 04:32 AM

looked around I didn't see anything out of ordinary I was hoping to see a fault code develop... oh sorry yes she just cranks, I have my 2005 9-5 aero that I could try a few parts (like the DI)

g96nt 08-13-2013 05:58 AM

There's not much that would cause it to no-start.
I'd start with the crank sensor. check the connector up at the throttle body. It's the blue one. pull it apart, and make sure there's not water shorting it out. a bad CPS will cause the injectors to not spray, and it won't start.

Even with a bad/unplugged MAF, it'll start.

The DIC could cause a problem, but it's less-likely. you can usually listen after you turn off the car for the cleaning phase. if you hear that, I'd say you're alright.
Also, if one of the coils were bad, it'll usually start/idle fine, but driving doesn't work.
in bad cases, if a coil is bad, it'll start and run like crap... but will still run.

mike saunders 08-13-2013 06:54 AM

They should have washed it while it was running.

Ditto on the CPS connector. I would disconnect all the harness connections one by one, spray with any water displacer, and reconnect....

It might run rough for a few minutes...

saabfan9 08-14-2013 06:59 AM

very cool thanks for the leads guys...where is the crank sensor located ? can I get to it from the top or bottom?...... went out to the car tues morning started right up all day long no problems go out to the car today again cranks no start no rain no moisture i'm guessing not related now...no codes, fuses good, good fuel pressure, swapped di's with my 9-5..... any ideas?

mike saunders 08-14-2013 08:31 AM

If you're looking at the car from the top front, the crank position sensor is located on the front of the block, right side near the tranny, about 4 inches up from the oil pan. There's a black wire that links it to a connector on the right side of the engine, top, just behind the head.

saabfan9 08-14-2013 12:11 PM

no start monday,tuesday starts run/drives like nothing happened, i had assumed it was wet, now dry working just fine..wed. again no start i did find water in that blue connector but nowhere else, cleaned and dried, still no start (just cranks) no rain or moisture in the air...so i'm not sure if it is related to getting the engine compartment wet....if it was a crank position sensor (or signal) you would think i should have a code since it is the main input to the pcm

saabfan9 08-14-2013 12:55 PM

since there is no codes could a theft security issue be a problem?

saabfan9 08-15-2013 05:40 AM

not seeing any voltage at the crank sensor/pcm connector

BuHuSPG 08-15-2013 08:24 AM

I have had two crank sensors fail and never saw a CEL. One failed a few times and would work when it cooled off - again, no CEL. The other one just straight crapped out, also, no CEL.

Is your fuel pump OK too? Do you hear it when you key ON?

WSW 08-15-2013 10:28 AM

Ohm out the cps

saabfan9 08-16-2013 06:48 AM

I tried multiple combinations of the 3 wires for the crk sensor everything was zero ...so now I get the fun job of a crk sensor right?

g96nt 08-16-2013 07:04 AM

It's certainly one of the easiest things to replace. My advice...use a wire brush and brake cleaner to clean the rust and grossness from around the crank sensor before you remove it. That hole goes directly to the crankcase. You don't want that junk falling in.

WSW 08-16-2013 09:00 AM

Ohm out the crank sensor itself and spray connectors with contact cleaner

saabfan9 08-16-2013 09:49 AM

tried to ohm out sensor got all zero's in any combonation of the 3 wires spec is something like 540 ohms..... now i was trying this morning to get the sensor out and i'm a tech so i have decent patience but that thing was kicking my ass this morning

WSW 08-16-2013 11:05 AM

Quote:

Originally Posted by saabfan9 (Post 1876377)
tried to ohm out sensor got all zero's in any combonation of the 3 wires spec is something like 540 ohms..... now i was trying this morning to get the sensor out and i'm a tech so i have decent patience but that thing was kicking my ass this morning

Bad cps then. Mine was shorted internally and read ol when I ohmed it.. Start spraying pb blaster at the Cps area.. Stupid t25/30 screw they used will probably strip

Aikmanson 08-16-2013 01:48 PM

CPS is a very easy job. Do yourself a favor and just order one, it will go bad eventually anyways.

saabfan9 08-16-2013 03:49 PM

Quote:

Originally Posted by WSW (Post 1876401)
Bad cps then. Mine was shorted internally and read ol when I ohmed it.. Start spraying pb blaster at the Cps area.. Stupid t25/30 screw they used will probably strip

... yep i think thats the road i was heading down have to come at it again with different stuff (assortment of tools)

N.A.S Story 08-16-2013 10:13 PM

If its your crank sensor you'll notice no tach bounce when cranking.. Like they said these fail regularly


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