Ranger Noise Problem

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11-12-2011, 12:55 PM

DBF44

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Ranger Noise Problem

I own a 09 Ranger4.0 that has been Supercharged, purchased through Explorer Express. To date everything has been working fine until a week ago.
I will include in this post what the Auto Shop stated to me yesterday.
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9; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} </style> <![endif]--> We meaning Mathewson’s and I are stumped by a problem we are having with the truck and wanted to tell ask about it in case someone has run into it before. This is the message I received from Mathewsons Automotive in Renton WA.

TROUBLESHOOT NOISE,TEST DROVE REPEATEDLY And CHECK , FOUND THAT AT IDLE WHEN ENGINE IS UNDER LOAD FROM AC COMPRESSOR THAT THE IDLE AIR CONTROL MOTOR ACTION MAKE'S A BONGO DRUM TONE THRU AIR INTAKE , AT TIMES THE CONTROL TRIE'S TO COMPENSATE FOR CHANGE IN IDLE CAUSING A MORE RAPID SUCCESSION OF BONGO DRUM TONE'S. Dave at explorer express may of heard of this problem before. I can be annoying though it it will not hamper performance. Has anyone run into a problem like this?

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11-12-2011, 03:25 PM

g_k50

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What's "Supercharged?"

Is that the turbo or the other one?

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11-12-2011, 04:10 PM

DBF44

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It is the XC-90 Supercharger from Explorer Express. It was shipped here and installed by Mathewson's in Renton WA. This is the 2nd one they have installed from this company.

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11-12-2011, 04:20 PM

DBF44

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The truck runs great. I have completely re-worked the under side with front and rear sway bars, Bielsteen shocks along with dual exhaust headers and a K/N air supply system.
The truck on the dyno shows 368 HP 313 Torque, AFR Avg: 12.1. Came with the new 3015 SCT Programmer, New fuel Injectors 39lb cobra, changed original gears from 3.55 to 4.10. can't think what else. If only the noise wasn't their it would be perfect.

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11-12-2011, 07:03 PM

cj06

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Quote:

Originally Posted by g_k50

What's "Supercharged?"

Is that the turbo or the other one?

a supercharger is a BLOWER , not a turbo !

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11-12-2011, 07:08 PM

DBF44

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I don't believe I ever used the term Turbo. I know what a supercharger is. Why ask the question. Read the message?????

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11-12-2011, 07:09 PM

cj06

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does the bongo sound come from the IAC motor ?
with the AC on the IAC motor will adjust the idle , is there any carbon build up in there ?
is there any thing loose on the AC compressor , bolts brackets ?
could the IAC motor be bad ?

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Ranger Noise Problem

Ranger Noise Problem

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