Freshly rebuilt auto trans question:but not GM
Good Day! My brothers 2003 Jeep Grand Cherokee lost its trans on a trip from ME to MD.The unit was rebuilt by a reputable ATRA shop in CT.When he retrieved the Jeep today and started south all went very well with the exception of the fuel mileage,It is off by about 30%! This is a 4.7 HO with the (pseudo) 6 speed auto and never attained great gas mileage anyway (16-18 mpg at 60-80 mph in the worst traffic corridor in the US) but today the best he was getting was about 12-13 mpg and there were no excessive tie ups thru the GWB or the NJT. So my question is this:Does this seem normal for a freshly rebuilt unit?
I have had much experience with GM tranny rebuilds from Powerglides,all TH models and the 700R4 and never experienced this! Any Ideas? Thanks in advance! step66! |
Could very well be our crap fuel. I'm pretty sure CT does the same thing MA does - put a sticker on the pump that says "10% ethanol", but in reality it's closer to 20% at many stations. Kills your mileage & performance. Makes them rich at our expense. :mad:
Either that, or they forgot to re-connect wiring for the torque converter lockup. You'd notice that pretty quickly on the highway though. |
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