Good lawd another problem RESOLVED
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Senior Member
Joined: Aug 2012
Posts: 334
Likes: 18
From: Marysville, CA
I posted the info in post #23.I have sent you a PM.There is only one device in your fuel system,part no AJ87977;it measures fuel rail pressure and is used to control the fuel rail pressure.
P0193 code is generated when the sensor(AJ87977) reports a high voltage(high fuel pressure)--there are a number of possibilities----failed sensor,failed PCM or wiring harness/connector problems.
The information on P0193 is in the JTIS,DTC section page 25.
The testing procedure is given in the JTIS,Powertrain section,303-04B,Fuel Charging and Controls,Diagnosis and Testing,B.
PS Don't get stressed out--Ive been retired for 6570 days straight,am approaching 70 years old and fixed 3 Jaguars this week
P0193 code is generated when the sensor(AJ87977) reports a high voltage(high fuel pressure)--there are a number of possibilities----failed sensor,failed PCM or wiring harness/connector problems.
The information on P0193 is in the JTIS,DTC section page 25.
The testing procedure is given in the JTIS,Powertrain section,303-04B,Fuel Charging and Controls,Diagnosis and Testing,B.
PS Don't get stressed out--Ive been retired for 6570 days straight,am approaching 70 years old and fixed 3 Jaguars this week
Thread Starter
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Senior Member
Joined: Aug 2012
Posts: 334
Likes: 18
From: Marysville, CA
Well, I received the fuel rail sensor from Gaudin Jaguar for $65.00. No Ford dealer had them around me...go figure.
So, I go out to Victoria to be sure I know what I am getting into before replacing this part. I locate the sensor front left side of the fuel rail (Thank you Tbird6 for thread link) I trace the hose leading from the sensor to the throttle body? Anyway, I notice that the rubber hose attached to the throttle body is cracked! Could it have been a cracked hose? Lucky for me the hose is long so I cut off the cracked portion and re-attach.
VOILA!!!! Easy breezy, 5 seconds and the problem seems to be fixed. Trouble codes are cleared and the car does not have the hesitation it did before!!
So, I go out to Victoria to be sure I know what I am getting into before replacing this part. I locate the sensor front left side of the fuel rail (Thank you Tbird6 for thread link) I trace the hose leading from the sensor to the throttle body? Anyway, I notice that the rubber hose attached to the throttle body is cracked! Could it have been a cracked hose? Lucky for me the hose is long so I cut off the cracked portion and re-attach.
VOILA!!!! Easy breezy, 5 seconds and the problem seems to be fixed. Trouble codes are cleared and the car does not have the hesitation it did before!!
Thread Starter
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Senior Member
Joined: Aug 2012
Posts: 334
Likes: 18
From: Marysville, CA
Another update, it may have been a combination of the hose and sensor because the check engine light came on and Victoria started hesitating again.
I changed the sensor this morning (and cracked the crankcase vent tube in another thread) and the check engine light went out. Reset the codes and I will check back in with results in about a week.
I changed the sensor this morning (and cracked the crankcase vent tube in another thread) and the check engine light went out. Reset the codes and I will check back in with results in about a week.
Senior Member
Joined: Aug 2013
Posts: 117
Likes: 23
From: Reading, Berkshire
Well done mate. It's a great feeling isn't it.
Since I bought my car in November I have been in and out of failsafe mode. After loads of head scratching and, against professional advice, I changed the throttle body and, 2 weeks later I'm still clear.
Well done you!
Thanks
Mike.
Since I bought my car in November I have been in and out of failsafe mode. After loads of head scratching and, against professional advice, I changed the throttle body and, 2 weeks later I'm still clear.
Well done you!
Thanks
Mike.
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