2003 XKR Stuttering - Transmission or O2 Sensors?
#1
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So I replaced my downpipes and exhaust a few months back (Nameless/Mina) and after around 500 miles or so I had P0420 and P0430 Catalyst System Efficiency Below Threshold Bank 1 and 2 errors pop up.
The car also started stuttering when you initially take off or when you hit it hard at speed. I cleared the codes and they haven;t popped back up but the stuttering is still there. The codes haven't popped back up after putting some miles on.
I took it into the local indy Jag shop and they couldn't find the cause and sent me to the local dealer. I am about to take it in. I was thinking the O2 sensors may have gone bad. However, the Indy shop is thinking it is a transmission issue.
Anyone have any insight before I take this over to the dealer?
The car also started stuttering when you initially take off or when you hit it hard at speed. I cleared the codes and they haven;t popped back up but the stuttering is still there. The codes haven't popped back up after putting some miles on.
I took it into the local indy Jag shop and they couldn't find the cause and sent me to the local dealer. I am about to take it in. I was thinking the O2 sensors may have gone bad. However, the Indy shop is thinking it is a transmission issue.
Anyone have any insight before I take this over to the dealer?
#3
#4
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You might consider a fluid change for the transmission. I have a 2006 XKR with 42K and it would shudder a little when cold. I just did the change with Mercon SP and the shudder has completely gone. You know the transmission sealed till death. I don't know if a dealer will do that for you. Follow Sam's instructions, it's not that hard to do and on a hoist it is quite simple.
Good Luck
Bob
Good Luck
Bob
#5
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#8
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Read some of the threads on replacement, I believe there's a way to get the passenger lower from the inside (really) through a plug in the firewall. Cut the leads and use a regular socket to remove, then use the o2 socket to install.
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