Engine stumbling
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magnum454 (07-05-2014)
#3
I had a customer's 1999 XK8 back when it was in Jaguar factory warranty that did the same thing on occasion. I drove the car home with me several times and finally felt the 'stumble' from takeoff, standing start.
I forget how I diagnosed the fault (WDS datalogger???) but I did swap out the MAFS with another car and it cured the fault.
I ordered a new MAFS for the car and returned it to the customer (case closed).
You might monitor the MAFS with a generic scanner and watch the readings when it happens (better to have 2 people, 1 to drive and the other to watch).
Like "The Coupe" said it could also just be an intake manifold leak.
bob gauff
I forget how I diagnosed the fault (WDS datalogger???) but I did swap out the MAFS with another car and it cured the fault.
I ordered a new MAFS for the car and returned it to the customer (case closed).
You might monitor the MAFS with a generic scanner and watch the readings when it happens (better to have 2 people, 1 to drive and the other to watch).
Like "The Coupe" said it could also just be an intake manifold leak.
bob gauff
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