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How to check at the Vacuum Regulator Solenoid
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=81201		 Page 1 of 1
Author:  bshooter [ Sun Jan 25, 2015 10:42 pm ]
Post subject:  How to check at the Vacuum Regulator Solenoid
Dose anyone know how to Ck the Vacuum Regulator Solenoid? I washed under my hood and must have shorted out this part, I'm getting the code P1252 -- "Vac Reg Sol Short Circuit" I removed the part and am getting 14.3-4 ohm's Can someone tell me if this part is BAD… Thanks...
Author:  gmctd [ Mon Jan 26, 2015 12:31 am ]
Post subject:  Re: How to check at the Vacuum Regulator Solenoid
Try drying it out with a hair dryer, then check again, but that doesn't seem too low - make sure the harness connector is dry

Normally, power is applied, the coil draws current, the shuttle moves then stops, at which time current will increase to maintain shuttle position - ECM is expecting this delay B4 current increases

If the shuttle is stuck, power is applied and current increases immediately - which can fool the ECM into thinking the solenoid is shorted
Author:  bshooter [ Mon Jan 26, 2015 8:46 am ]
Post subject:  Re: How to check at the Vacuum Regulator Solenoid
Thanks, I give this a try..Ill Post back…
Author:  bshooter [ Mon Jan 26, 2015 5:40 pm ]
Post subject:  Re: How to check at the Vacuum Regulator Solenoid
Well I tried the hair dryer-- no dice.. O'well Thanks gmctd for the advice… I ordered a new solenoid.. I did Talk to Keith @GreenDieselEngineering and he always has GREAT advice… "he said to unplug the unit and use the long tube to jump -bypassing the Solenoid to the VAC can… till I get the replacement... :ROTFL: Worked like a charm… Thanks Keith you are a very smart man…..
Author:  gmctd [ Mon Jan 26, 2015 5:51 pm ]
Post subject:  Re: How to check at the Vacuum Regulator Solenoid
Yep - most just bypass it and replace
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