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You read my mind... :)

No response=no change in idle when you pump the gas pedal...VERY frustrating!!:mad: Good point on the vacuum check. I had forgotten about that trick... I'll give that a try first....

All valid points and next on my to-do list. Thx for the conventional wisdom! I'm leaning toward vacuum though. Your post reminded me that one of the issues with the 2004 XLR was intake manifold bolts that were proned to loosening... Time to get out the 'ol torque wrench. If any of y'all could...

Yup, new battery... Same problem... Interesting suggestion on the ignition coils... Couldn't hurt to look into that... Don't understand why that would cause the lack of response from the gas pedal though.... I'm starting to lean toward something in the main computer that governs all the ignition...

Certified XLR tech? Absolutely. Thx to this forum that was the first question that I asked before I let them look at the car... But... Not to impressed with their technical expertise.

Hi Guys, Still going thru idle issues with the 2004 XLR. To re-summarize: sometimes the idle is rough and will bounce between 800rpm and 1100rpm will no response from the gas pedal. Had it at the dealer for 2 days and they couldn't figure it out. The said they've never seen...

New Post Thread Hey All, This post was getting too long and was straying away from the original thread title so I started a new more relevant thread called: " Engine Sensors_Top Switches and Check Engine Light " I'll be posting questions and updates there now... Thx again...

Hey All, I'm starting a new Thread. My old thread " Bad Throttle Linkage?? " was getting a bit off the Title topic... I'm still trying to troubleshoot the Check Engine Light. I took the top cover off the engine to get a closer look at the intake...

Check Engine Light Reset A thought just occurred to me... If by some stroke of luck I stumble across and repair the issue(s) tripping the check engine light, will the warning light circuit automatically reset and turn itself off? <or> does that annoying Tech 2 unit have to reset it...

Down But Not Out OK... So I see this 2 year old posting on the forum: "A new issue was discovered that is appearing in older XLR and some STS models with the Northstar V8. My layman's explanation, based on a much longer discussion with the Tech is that, over time, the heating and cooling of...

Woe is Me OK... So... Just got the XLR back from the dealer to check out 3 issues: 1) Top does not retract after the trunk module replacement, but trunk lid opens fine.. I assumed that the module just needed to be reprogrammed.. ((estimate for repair: $240 )) 2) Diagnose check engine light on...

XLR Trunk Compartment Drain AMENon the absent drain hose.. It's fool-proof now on draining that inevitable flood... I just snipped the flap off the bottom of my '04's drain hose. Now you can see the ground looking from the compartment side... IMHO there was never a need for a hose anyway...

Thx!! Hi "OnAlaska", Thx for the quick reply. I've been holding my breath on this one. This is the answer that I wanted to hear... Hopefully the Caddy dealer a few blocks from my house has a Certified XLR Tech on staff... Speaking of which, you guys may enjoy this...

Retractable Top Programming? Hey Guys, Do I read right that after replacing the retractable top module in the trunk well, it has to be re-calibrated with a a Tech 2 by the dealer??? Thx...

Hey Kev, Sorry to hear about the water issue. I just went thru the same problem and symptoms and lost both of those modules in that compartment... If you remove them and inspect the internal circuit board I suspect that you will see that they are fried since these units are...

Mission Semi-accomplished... Well, the saga continues. (Grab two beers and get comfortable, this has turned into a blog) After many many hours cleaning the corrosion off the wiring harness connectors in the trunk pocket, and replacing the control modules that they were attached to, the...

Woo-Hoo!! Hi Bruce and Dave, Thx for the advice. It's purring like a kitten now with normal throttle response at idle... :rocker: Get comfortable, this is a long one... Here's what I did: () Started the car to wake up the evil spirits. Yup, died the first two tries...

Hi All, New member... Family member has a 2004 XLR. Had the usual dead battery issues but it always ran good... Now this problem has popped up: () Rain water in trunk pocket where wiring harness connectors are. Connectors were completely submerged for a few weeks due to a...