2 cries for help from a Newbie
01-09-2010, 01:31 AM
#1
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Join Date: Jan 2010
Location: UK
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Year: 2001
Model: Grand Cherokee
Engine: 4.7L V8
2 cries for help from a Newbie
Hi,
Just found this forum, and hopefully you can help.
We bought the Grand Cherokee new in 2001, and won't change it for anything. It's just perfect!
Qn 1 - After stopping, it takes a long time of cranking before the engine starts again. Anyone any ideas?
Qn 2 - Is there any way I can get a better mpg by re-chipping? And from where?
Thanks for the help.....
Playdoh!
2001 Grand Cherokee 4.7L V8
Just found this forum, and hopefully you can help.
We bought the Grand Cherokee new in 2001, and won't change it for anything. It's just perfect!
Qn 1 - After stopping, it takes a long time of cranking before the engine starts again. Anyone any ideas?
Qn 2 - Is there any way I can get a better mpg by re-chipping? And from where?
Thanks for the help.....
Playdoh!
2001 Grand Cherokee 4.7L V8
01-09-2010, 02:30 AM
#2
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Join Date: Nov 2008
Location: Orlando-Chickamauga
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Year: 2001
Model: Cherokee
Engine: 4.0
i dont know about 1 but for 2 no, not really. you can use a chip and it will make a difference for a while but the computer will eventually learn around it.
01-09-2010, 08:42 AM
#3
CF Veteran
your first question is likely your cps, or crank positioning sensor.
as for mpg's, maybe a faulty downstream o2 sensor...
as for mpg's, maybe a faulty downstream o2 sensor...
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