Question about 2004 Ford F150

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Degreased engine compartment got a check engine light says idle air control too low sounds like it must have gotten wet can it be dried out or is it totaled??? 2004 f150 4.6

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  • Ford Master
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P0506 - Idle Air Control System RPM Lower Than Expected  Vehicles with electronic throttle control (ETC) This DTC is set when the Powertrain control moduel module (PCM) detects an engine idle speed that is less than the desired RPM.  Air intake restriction.
Exhaust restriction. 
Engine mechanical fault. 
Damaged electronic throttle body (ETB) 
Damaged PCM 
This DTC is informational only and it may be accompanied by other DTCs. Diagnose other DTCs first. If other DTCs are not present inspect the intake air system for air restrictions and damage. If no concerns are present, clear the DTC and retest.

Hope this helps, keep me posted be glad to help. 

Posted on Jun 30, 2009

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  • Ford Master
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Make sure you did not knock off any of the vacuum hoses, then clear light and see if it comes on again

Posted on Jun 30, 2009

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Posted on Jan 02, 2017

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1 Answer

I used degreaser on my engine and washed off with water now my car won't start


The usual culprit here is the 'and washed it off with water' part. This is usually some variant on spraying with a garden hose, on the low end with a thumb over the end, up to and through a regular sprayer, or even a pressure washer.

The engine compartment is set to deal with a bit of road splash, but road splash isn't going to come in continuously at high velocity from above unless you've been missing your hood for a while.

With the hose, you may have:
  • Gotten water into your air filter: Filter won't pass air through easily, engine starved for air, won't start.
  • Gotten water down past the seals to your spark plugs. Many electronic ignition systems have a coil assembly over each plug. There is a compliant seal at the top to keep condensation out, but a hard hose spray can force water past the seal, dumping water into the spark plug. It will not likely get into the piston through the spark plug thread, but could mess with the electrical connection to the plug.
  • Gotten water up into electronic parts or fuse boxes or relays. The fuse/relay panels are likewise built to keep out moisture, not fight off a pressure spray. Wet fuses or relays can do you in too. You can, in this case, open them, check for moisture, and address, as needed by pulling components, drying part and contacts, and re-inserting.
  • battery shorted (?). Shouldn't happen unless there's a ton of leaked acid or other conductive stuff on the battery. If so, clean if off with some baking soda, dry with paper towels, re-charge if needed.
  • There are other possibilities at lower likelihood, in the event that, say, the oil fill port was open while you were spraying, but start with drying things off, checking that the air filter and fuse/relays are ok. You'll likely be OK.
Good Luck!

Nov 11, 2015 | Cars & Trucks

1 Answer

1993 toyota corolla seca won't start I degreased the engine bay now won't start i check engine light on I did the digonosics on it no problem it new fuel filter fuel pump is workin


Remove the distributor cap and check for water inside it. Ignition wires may have gotten wet as well and possibly need to be replaced

Apr 07, 2015 | Toyota Cars & Trucks

1 Answer

My 3800 v6 engine is running very bad as if only on 4 cylinders after degreasing it at car wash 6 hours ago .engine shudders under exceleration and vibrates .


There is a good chance that you might have gotten a coil pack or the DIS module wet and the engine is not firing on all cylinders. If the problem does not clear up when everything is completely dry, check for spark on all cylinders. One coil pack fires 2 cylinders and I bet you have one not firing.

Jul 25, 2014 | Cars & Trucks

2 Answers

Decreased engine, now it shudders & idles rough


The water has gotten past the plug boot seal. Pull the plug tire off the plugs and use some compressed air to blow out and dry the plugs. Some times the water can really get deep so don't pull out the spark plugs.

Mar 23, 2014 | Suzuki Vitara Cars & Trucks

1 Answer

Light Show!!


You have obviously got water ingress where you shouldn't when cleaning the engine. It's always advisable to have the engine running and at operating temperature whenever using water to clean under the hood. Anyway, the water is there so what do you do? Carefully clean every electrical connection under the hood with a dry cotton cloth. WD40 can be used and will do the job more easily but naturally will leave an oily residue, depends on how clean you want your motor. Persistence and tenacity are the key features plus plenty of patience to overcome the water problem - and here's hoping you don't do it again!

Dec 27, 2013 | 1994 Chevrolet Camaro

1 Answer

Air conditioning


Is your car equipped with an OBD-I or OBD-II system? If it is OBD-II, invest in an OBD-II scan reader- since you'll be able to pull valuable source information from it to help troubleshoot the problem. If your on a limited budget and cannot obtain the scan reader, some auto supply stores, like NAPA, Pep Boys, and Auto Zone will either rent one out to you or they may hook up their reader for free.

The big question for now is, what type and brand name degreaser did you use? If it contains petroleum distillates, it will break down plastic, rubber, and other materials prone to deteriorate- when exposed to petroleum based cleaners.

Dec 27, 2013 | 1994 Chevrolet Camaro

3 Answers

Low rpm at idel


Sounds like there is a vacuum leak. I's there a check engine light on? If so is there any lean codes?

Jul 13, 2013 | 2003 Ford Taurus

2 Answers

1994 toyota corolla turns over but wont start


If you can, air dry the complete engine compartment where you used water to clean it. Possibly a few electrical connectors to the ignition system are wet. If you can disconnect these and air dry them, it may help. If you have not performed any type of maintenance like tune up, good time to do so.

Jun 27, 2017 | 1994 Toyota Corolla

1 Answer

Car turns over but will not run idles rough then stalls degreased engine was able to get running took for test drive ran fine went home let sit for couple of hours went to drive it again turns over but...


sounds like you got the thing wet....DO NOT PRESSURE WASH/STEAM CLEAN ENGINE COMPARTMENT.leave the hood up and hopefully it will dry itself out,or if you can start it, let it run for an hour at least on tickover with all electrics on and a/c on full.A NICE SUNNY DAY WOULD ALSO HELP.....

Aug 18, 2010 | 1994 Lexus GS 300

1 Answer

Air conditioning comp not turn on


if you used a pressure washer ,you could have caused a leak ,if there is no freon the low pressure switch wont let the compressor turn on,even if you didnt use high pressure,engine degreaser may remove corrosion on the line set or the condenser ,also causing a leak, the high or low pressure switches may still be wet, follow the line set ,fat line (low pressure switch with a plug w/2 wires)unplug it make sure its not still wet inside,do the same to the high pressure switch on the small line,check the fuses ,pull the ac relay make sure there is no water underneath,and the prongs are dry,if the blower fan in the vechile isnt working on 2,3,or 4 speed it wont let the ac turn on,if all that checks out ,turn the fan on high max ac unplug the green wires or wire on the compressor right behind the belt pulley,check for 12v dc,if none,you lost a relay or one of the pressure switches,fuse,maybe broken wire,if 12 v. is there,your clutch coil fried on the compressor pulley,good luck, hope you figure it out

Jul 07, 2009 | 1998 Jeep Grand Cherokee

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