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2006 Crown Vic Police Wont Start when throttle hooked up
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hbfd819
Novice
Jan 2, 2012, 8:47 AM
Post #1 of 10
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2006 Crown Vic Police Wont Start when throttle hooked up
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Ok, its a 2006 Ford Crown Vic Police Interceptor, 4.6 with 186K miles. I was simply driving down the road and all of the sudden, all of my indicator lights on my dash came on at the same time and my odometer went from a reading to - - - - - - - . I tried to start over and over nothing. I noticed on the electronic throttle body it was clicking really fast.
I replaced the throttle body first, no changes. Then I replaced the gas pedal, no changes. Then I swapped the PCM with a matching 06 Police no changes.
The only thing that is strange is that when you unhook the throttle, the car will start and idle. If you plug it up and then turn the key on, the fuel pump will not prime up, and the car wont start. As long as the plug for the throttle is unhooked car is great. When you hook it back up, everything goes to pot.
You cannot read the computer when the throttle is hooked up once you try to start it. When the throttle plug is unhooked you get codes but they are like throttle control processor - forced idle and throttle stuck closed.
i took it to a dealership and they got the same codes I got and they wanted to change the throttle for 585 dollars and said if that didnt fix it I'd still have to pay for it. I took the throttle off and tested it, put voltage to it, nothing wrong.
Any ideas?
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Discretesignals
Ultimate Carjunky
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Jan 2, 2012, 11:11 AM
Post #2 of 10
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Re: 2006 Crown Vic Police Wont Start when throttle hooked up
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Check fuse F20 15A in the fuse box next to the battery.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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hbfd819
Novice
Jan 2, 2012, 4:12 PM
Post #3 of 10
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Re: 2006 Crown Vic Police Wont Start when throttle hooked up
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Ok I replaced that fuse and now the car will start regardless of the throttle being hooked up...now even though it starts the throttle isn't changing and I'm getting the following codes
P2110 throttle actuator control system limited rpm
P035 -ignition coil c something
P0446 evap system circuit
P0453 evap emission system
The car runs like crap and it kinda surges up and down a bit
Any more ideas
Thanks
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Discretesignals
Ultimate Carjunky
/ Moderator
Jan 2, 2012, 5:18 PM
Post #4 of 10
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Re: 2006 Crown Vic Police Wont Start when throttle hooked up
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Just curious, but did you reinstall the original PCM?
The P2110 is showing up because the PCM is force limiting the throttle actuator and is currently in (FMEM) Failure Mode Effects Management. That explains why it's running like a bag of crap. Normally when that code pops up there should be another code that goes with it that is causing the FMEM to occur.
The code that is causing the FMEM to occur is the P035x. Which ever coil primary circuit is shorting out causes the PCM to turn off the injector for that cylinder.
Check the engine wiring harness very carefully and look for damage from chaffing/rubbing on something metal. Check the harness that goes to the PCM and follow it to see if it has rubbed through on something. Ohm check all your coils and make sure that you don't have shorted windings. The fuse blew because of the short and the affected coil primary wiring may be doing the same.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jan 2, 2012, 5:37 PM)
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hbfd819
Novice
Jan 2, 2012, 5:59 PM
Post #5 of 10
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Re: 2006 Crown Vic Police Wont Start when throttle hooked up
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Ok here's the deal.....I put on a bone yard PCM that I had picked up just in case and lo and behold the car runs great! Acceleration is smooth and runs with no problems....
Now here's my new problem, if something screwed this thing up, what would keep something from screwing the next one up?
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Discretesignals
Ultimate Carjunky
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Jan 2, 2012, 6:10 PM
Post #6 of 10
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Re: 2006 Crown Vic Police Wont Start when throttle hooked up
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I'm assuming that the fuse was popped. Could have popped from something shorting out in the original PCM. That fuse feeds the PCM and the MAF sensor, so a short in the PCM, MAF, or relating wiring is going to blow the fuse. Seeing how the engine was running badly with your original PCM after the fuse was replaced could mean that the problem was inside the original PCM.
I guess time will tell, eh? Don't really have an answer for that. You should still inspect your harness and wiring for possible chaffing and shorts. Wiggle the wiring around just to see if the problem rears its ugly head again. If you don't see anything obvious, you'll just have to see how it goes. Hate to type that, but problems that are solved when you don't know why they occurred in the first place can drive you nutty.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jan 2, 2012, 6:12 PM)
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hbfd819
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Jan 2, 2012, 10:48 PM
Post #7 of 10
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Re: 2006 Crown Vic Police Wont Start when throttle hooked up
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yes the fuse was blown, and i had a spare pcm that matched the car....so its running now.
however, now i have three check engine codes and the wrench is on with reduced power to about 60 mph.
p0353
p0453
p0446
so i'm not sure about those....seems like out of one problem into another.
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Discretesignals
Ultimate Carjunky
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Jan 3, 2012, 5:58 AM
Post #8 of 10
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Re: 2006 Crown Vic Police Wont Start when throttle hooked up
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Swap the ignition coil for #3 with another cylinder's coil. Clear the codes and see if the P0353 changes.
If your sitting in the vehicle, #3 is on the passenger's side third one back from the front of the engine.
P0446 is the canister close valve circuit being shorted to power or ground.
P0453 is EVAP fuel tank pressure sensor high. Mean shorted to power or ground or the circuit is open.
You really need to inspect your wiring harnesses including the ones at the fuel tank for the FTP sensor and canister close valve. All those codes have something in common. It is also possible that one of those components is shorting out and causing problems with those other devices. You could unplug each component one at a time to see if two of the codes go away. Those circuits need to be troubleshoot to find the source of the problem. I bet when you find the source, it will clear up all the other problems.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jan 3, 2012, 6:03 AM)
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hbfd819
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Jan 3, 2012, 10:07 PM
Post #9 of 10
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Re: 2006 Crown Vic Police Wont Start when throttle hooked up
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i was driving the car to the fire station to change out that coil, the car died....not the same problem no - - - - - on the dash, car just wont start and the fuel pump will not "prime up" when you turn the key.
i almost wish it was as simple as a bad fuel pump, but what about those evap codes? would that be related?
I am REALLY tired of this car.....
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Discretesignals
Ultimate Carjunky
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Jan 4, 2012, 8:33 PM
Post #10 of 10
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Re: 2006 Crown Vic Police Wont Start when throttle hooked up
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What you should do is trouble shoot those two EVAP codes that were popping up. They may have something in common because they are both circuit codes. You may have to disconnect the computer and chase circuits from the PCM connector to see if there are any wiring issues. Your going to need a connector pin out and wiring schematic for the computer circuits. You'll also need test equipment such as a multimeter and a enhanced scan tool to see if the computer is up and running and to view data stream information with. All you really have done so far is swap parts, now is time to do some diagnostics and detective work.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Jan 4, 2012, 8:37 PM)
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