The heat hit and my 01 is hard to start now
#1
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Location: Grand Haven, MI
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Year: 2001
Model: Cherokee
Engine: Stock
The heat hit and my 01 is hard to start now
My cherokee has always been easy to start, but recently it seems like it will crank and crank the first time that you try and start it, but will start on the second try.
If I let the fuel pump cycle before I try to start it, it starts as normal. Seems to me that would indicate some kind of fault in the fuel return system. Anybody have any idea on why it won't hold fuel pressure? Would the heat have something to do with it? it didn't seem to do this until it hit like 80* outside.
If I let the fuel pump cycle before I try to start it, it starts as normal. Seems to me that would indicate some kind of fault in the fuel return system. Anybody have any idea on why it won't hold fuel pressure? Would the heat have something to do with it? it didn't seem to do this until it hit like 80* outside.
#3
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Location: Visalia, Kalifornia, ussa
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Year: 1996
Model: Cherokee
Engine: 4.0
My cherokee has always been easy to start, but recently it seems like it will crank and crank the first time that you try and start it, but will start on the second try.
If I let the fuel pump cycle before I try to start it, it starts as normal. Seems to me that would indicate some kind of fault in the fuel return system. Anybody have any idea on why it won't hold fuel pressure? Would the heat have something to do with it? it didn't seem to do this until it hit like 80* outside.
If I let the fuel pump cycle before I try to start it, it starts as normal. Seems to me that would indicate some kind of fault in the fuel return system. Anybody have any idea on why it won't hold fuel pressure? Would the heat have something to do with it? it didn't seem to do this until it hit like 80* outside.
#4
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Join Date: Nov 2009
Location: Mechanicsburg, PA
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Year: 1996
Model: Cherokee
Engine: 4.0 L H.O. I6
#5
Seasoned Member
Crank Position Sensor connector
I have had this same problem for years, replacing CPS, coils and ignition control modules. Seems I have mostly experienced this when parked in the sun during the summer. Last summer while trouble shooting I tried and avionics trick, disconnect, re-connect and try again. Praise God it started. It is a pain in the neck but I've probably done this 25 times in the last year. I know it sounds crazy but it works for me. I wonder if the connectors expand with the heat just enough to lose connectivity. At some point I'll take it to the shop and put a new CPS harness in. Hope this helps your troubleshooting and save you a ton of money.
Last edited by AVjeeper; 05-31-2010 at 09:28 AM. Reason: Misspelling
#6
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Join Date: Apr 2010
Location: Grand Haven, MI
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Year: 2001
Model: Cherokee
Engine: Stock
I have had this same problem for years, replacing CPS, coils and ignition control modules. Seems I have mostly experienced this when parked in the sun during the summer. Last summer while trouble shooting I tried and avionics trick, disconnect, re-connect and try again. Praise God it started. It is a pain in the neck but I've probably done this 25 times in the last year. I know it sounds crazy but it works for me. I wonder if the connectors expand with the heat just enough to lose connectivity. At some point I'll take it to the shop and put a new CPS harness in. Hope this helps your troubleshooting and save you a ton of money.
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