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05 tC Cranks - Won't Start - Codes P0335B and P0340..

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Old 08-18-2012, 05:02 PM
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Default 05 tC Cranks - Won't Start - Codes P0335B and P0340..

05' tC, 98k Miles, Dezod S1 Turbo, etc.

It has a CEL light on with P0335B and P0340.

Replaced the Camshaft Position Sensor, and ordered the Crankshaft one. Just replaced the fuel pump with a Walbro High Flow one. Not sure exactly which relay/fuse
is for the fuel pump so I just tried moving the Horn relay around a bit. Also tried resetting the AEM Piggyback (Disconnect battery for 10minutes.)
Car still won't start.

The car will start up most of the time with some starter fluid, but will die if you try to drive it.

Anyone have any ideas if the Crankshaft Position Sensor doesn't fix it? (Will know in in a few days.)

EDIT: Took the AEM F/IC out and plugged into the stock computer. Car still start, rev to 3000, and die.

Should I try to get ahold of AEM and get the F/IC looked at or should I try to change the Crankshaft Position Sensor first?

_____

Last edited by MR_LUV; 11-24-2020 at 04:33 PM. Reason: Awarded 5 Yr Badge
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Old 08-18-2012, 08:34 PM
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Originally Posted by Perplex
05' tC, 98k Miles, Dezod S1 Turbo, etc.

It has a CEL light on with P0335B and P0340.

Replaced the Camshaft Position Sensor, and ordered the Crankshaft one. Just replaced the fuel pump with a Walbro High Flow one. Not sure exactly which relay/fuse is for the fuel pump so I just tried moving the Horn relay around a bit. Also tried resetting the AEM Piggyback (Disconnect battery for 10minutes.) Car still won't start.

The car will start up most of the time with some starter fluid, but will die if you try to drive it.

Anyone have any ideas if the Crankshaft Position Sensor doesn't fix it? (Will know in in a few days.)

EDIT: Took the AEM F/IC out and plugged into the stock computer. Car still start, rev to 3000, and die.

Should I try to get ahold of AEM and get the F/IC looked at or should I try to change the Crankshaft Position Sensor first?

Who made your harness? I'm 110% convinced it's wiring.

EDIT: If you bypassed the FIC, it's obviously the wiring harness. I'm going to guess it's a boomslang harness?
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Old 08-18-2012, 11:44 PM
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Do you have the resistors in your harness?
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Old 08-18-2012, 11:55 PM
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I was going to reccomend the resitor idea, but I wasn't certain anymore about that. I know when I installed my harness, we had to REMOVE the resistors for it to work. But I can't speak for TCs.
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Old 08-19-2012, 03:44 AM
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Originally Posted by RJSCION
Who made your harness? I'm 110% convinced it's wiring.

EDIT: If you bypassed the FIC, it's obviously the wiring harness. I'm going to guess it's a boomslang harness?
95% sure it's a boomslang harness (just got the car a few weeks ago, first turbo'd vehicle so getting used to all this kind of stuff.)

Originally Posted by sebbyxtc
Do you have the resistors in your harness?
The guy I got the car from said that he had the resistors in but to check them to make sure they didn't go bad or something like that. Like I said above, first turbo'd vehicle so I've never dealt with anything like this. Always been a 4x4 guy.

Originally Posted by RJSCION
I was going to reccomend the resitor idea, but I wasn't certain anymore about that. I know when I installed my harness, we had to REMOVE the resistors for it to work. But I can't speak for TCs.
Mind elaborating on how to put resistors in/check them/replace them/whatever.


Sorry for not really having a clue as to what I'm doing, or what I'm really talking about. We all gotta start somewhere
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Old 08-20-2012, 12:02 PM
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Anyone else have any input?
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Old 08-21-2012, 01:38 AM
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Still won't start
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Old 08-21-2012, 03:01 AM
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Call dezod
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Old 08-21-2012, 02:32 PM
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Originally Posted by sebbyxtc
Call dezod
Dezod or AEM?
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Old 08-21-2012, 02:51 PM
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Start with Dezod, they might be able to point you in the right direction
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Old 08-21-2012, 05:19 PM
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Originally Posted by sebbyxtc
Start with Dezod, they might be able to point you in the right direction
AEM keeps having me leave messages, and Dezod told me to check a few things and tried to help but couldn't do much for me over the phone.
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Old 08-22-2012, 02:56 AM
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Still looking for solutions. Anyone think maybe the AEM just ____ out on me? Should I try to get the plug and play replaced by AEM or do you think I should just throw in the towel and take it to a shop (prefer not to with my funds.)
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Old 08-22-2012, 03:54 AM
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send the fic to aem for troubleshooting, maybe the map sensor crapped out. what did dezod tell you?
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Old 08-22-2012, 12:36 PM
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Originally Posted by sebbyxtc
send the fic to aem for troubleshooting, maybe the map sensor crapped out. what did dezod tell you?
Dezod told me to pretty much check all the vaccum lines, etc.
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Old 08-23-2012, 06:23 AM
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Today I disconnected the battery for about two hours and then reconnected and let the car sit while I went to work. About 8 hours later I came home and was going to vaccum it before having it towed (so when I got it back I wouldn't have to.) I decided to give it a shot and start it up - and it started with the AEM F/IC.

I drove it around for awhile and it seemed fine except it couldn't idle. Anytime I went to a red light I'd just give it a bit of gas and have the car rock rather than let it attempt to idle and have it die out in the middle of my town. I went and washed it, and then went to restart it and it took 2-3 cranks but it eventually fired back up.

However, it used to idle at around 700-750rpm and it's now idling (rough) at anywhere from 300-500, usually sitting around 450-500. It sometimes dies, and will sometimes idle at that RPM. Could this be the AEM F/IC just ____ting out?
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Old 11-24-2020, 03:55 PM
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Any update?
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