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Unread 04-18-2007, 05:07 PM   #166
Tulsa
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Neither 05 or 06 CRD's were available with 17" wheels was there an engineering reason for this?

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Unread 04-18-2007, 05:09 PM   #167
Jerry Bransford
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Since Jeep knows that many of their Jeeps will have suspension lifts and thus larger tires installed, wouldn't it be a good idea to set up the PCM programmers used by the dealers so they can compensate for a wider range of tire sizes? At this point, dealers are very limited on what tire sizes they can program the speedometer for.

Afterall, with the latest electronic speedometer designs, it's no longer just a matter of swapping in a different speedometer gear and we need accurate speedometers no matter what size tire we are running.
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Unread 04-18-2007, 05:10 PM   #168
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Quote:
Originally Posted by JeepEngineers
Sorry, we can't comment on future product.
OK, then heres one for ya on an existing product.

The heater temperature control in my '03 Grand Cherokee Laredo has an intermittant issue. It will occationally stop heating even after it has been working for a while. The engine coolant is full and everything else seems normal. If you giggle the temperature knob or press in slighly, the heat will return. My guess is the whole heater control module needs to be replaced. Is there anything else that could cause this issue and have you ever seen it before?
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Unread 04-18-2007, 05:11 PM   #169
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Quote:
Originally Posted by V8 Grand
OK, then heres one for ya on an existing product.

The heater temperature control in my '03 Grand Cherokee Laredo has an intermittant issue. It will occationally stop heating even after it has been working for a while. The engine coolant is full and everything else seems normal. If you giggle the temperature knob or press in slighly, the heat will return. My guess is the whole heater control module needs to be replaced. Is there anything else that could cause this issue and have you ever seen it before?
We are keeping our discussion KJ focused. Thanks!
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Unread 04-18-2007, 05:11 PM   #170
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Quote:
Originally Posted by Tulsa
Neither 05 or 06 CRD's were available with 17" wheels was there an engineering reason for this?
Yes, the 16" tire is the best for fuel economy.
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Unread 04-18-2007, 05:11 PM   #171
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Quote:
Originally Posted by dakuda
IS there any way to modify/rewrite the calibrations, or bypass them, for a heavily modified vehicle?
There are a lot of after market "black boxes" out there with modified calibrations but you always run a risk of not knowing how much they validated it, meaning how safe it is for you or your vehicle.
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Unread 04-18-2007, 05:13 PM   #172
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Post 161 was lost I think.
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Unread 04-18-2007, 05:13 PM   #173
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Quote:
Originally Posted by V8 Grand
OK, then heres one for ya on an existing product.

The heater temperature control in my '03 Grand Cherokee Laredo has an intermittant issue. It will occationally stop heating even after it has been working for a while. The engine coolant is full and everything else seems normal. If you giggle the temperature knob or press in slighly, the heat will return. My guess is the whole heater control module needs to be replaced. Is there anything else that could cause this issue and have you ever seen it before?
Is your '03 Grand Cherokee Laredo really a LIBERTY?

Come ON people!!!
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Unread 04-18-2007, 05:13 PM   #174
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Thread Closed!

We're closing the thread since it's past 7:00 (time flies!)

Thanks for your participation tonight. See you next time!
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Unread 04-18-2007, 05:14 PM   #175
Jerry Bransford
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Thanks people, both participants and especially you Jeep engineers!
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