Question about Cars & Trucks
If i drive over 35mph and let off the gas rpm drop to 1000 and loud scrapping/whinning noise. if i press gas the noise goes away if i let off the gas rpm drop again and noise continues. the speed never changes. truck is shifting doesnt seem like anything else is wrong.
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Posted on Jan 02, 2017
Im not sure what type of autoparts stores are available in your area but most have OBD machines that they can use for free to determine why ur check engine light is on; they will even give you a printout of the problems detected. I would go there first to make sure that it is your tranny speed module. If it is they can usually help wlak you thru the process to replace or you can buy the Haynes manual for that vehicle which will give you step by step replacement instructions on it
Posted on Aug 01, 2009
This is a somewhat common problem with the 04-06 MY 4x4 trucks.
The IWE vac solenoid can ingest water, and introduce it to the IWE, or can develop a problem where it does not keep constant vac on the IWE ends, and the gears hang part in ( grinding ).
You can check the IWE solenoid to make sure it will supply VAC to the IWE ( vac keeps the IWE out, remove vac, and the spring will engage it into the gears ).
You can check the vac lines to the IWE, and the solenoid, but I hate to say the IWE solenoid needs to be replaced.
Here is a link to a PDF version of the TSB with the part number for the updated IWE solenoid that the 07& 08 MY trucks have.
Here is a block diagram of the IWE layout, so you can check the vac lines. Hope it is as easy as a cracked vac line. Also check that the vent tubes are clear, and still up into the engine compartment.
Posted on Dec 06, 2009
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