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Occasional Slow Acceleration

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Old Oct 25, 2010 | 10:53 PM
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major187's Avatar
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Default Occasional Slow Acceleration

I just brought home a 2005 SRT which was about a 250 mile drive. And once home I noticed that the acceleration was sometimes sluggish and just awful. While other times it would get on it with no problem. I did some searching on the forum and found that it was a known problem and the thread from back in 2006 said that the problem was always the intercooler pump. I just wanted to verify that this was still more than likely going to be the issue. The dealership gave me the 60 day powertrain warranty but this dealership didnt have too much knowledge on this car to start with so I know them deciphering a problem would be a miracle. Has anyone experienced this problem lately? And if so is it going to be the Intercooler Pump?
 
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Old Oct 25, 2010 | 11:35 PM
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JHM2K's Avatar
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From: Murfreesboro, TN
Default Re: Occasional Slow Acceleration

I'm saying with 94.86% certainty that it's the IC pump.

A relatively cheap fix, should you elect to do it yourself. But if they'll fix it without breaking something else, go for it. Just be aware the replacement they use won't last forever either. Most upgrade to the Johnson CM30
 
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Old Oct 26, 2010 | 12:11 AM
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dinasrt's Avatar
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From: Mendocino, CA
Default Re: Occasional Slow Acceleration

The dealership gave me the 60 day powertrain warranty but this dealership didnt have too much knowledge on this car to start with so I know them deciphering a problem would be a miracle. Has anyone experienced this problem lately? And if so is it going to be the Intercooler Pump?

Yes, it is a common problem as your search has proven. Tell the dealer that the intercooler pump was not working on the ride home and is not allowing your supercharger to function properly because it isn't pumping and cooling as it should and is shutting down the SC because of overheating. Bring it in to them after getting it good and hot and then bring the SA (or preferably a tech there that knows the difference between an N/A and an SRT6) out for a test drive. Don't let him tell you that "It seems fine". Tell him that if it was working properly you'd be going 85 right now instead of 35..... Or something like that anyway Of course, I'm just assuming this is what the problem is; but it is most likely. Good Luck.
 
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Old Oct 26, 2010 | 06:08 AM
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Default Re: Occasional Slow Acceleration

I was thru the Indian Lake area yesterday running west on 33...I saw a black roadster just north of Indian Lake....anyway, it is more than likely the intercooler pump...I would like to know how many people traded their car in thinking something major was wrong with it...anyway, I would replace the pump...if for some reason that doesn't fix it, then go to the temp sensor for the s/c.....good luck...I should be back in that area in the next few weeks...if I can be of any help....
 
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Old Oct 26, 2010 | 06:16 AM
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BLACKSRT-6's Avatar
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Default Re: Occasional Slow Acceleration

x3 on IC pump, then sensor
 
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Old Oct 26, 2010 | 08:33 AM
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mr-lama's Avatar
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Default Re: Occasional Slow Acceleration

I'm guessing this was with you flooring the throttle?

If so, almost definitely IC.
 
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Old Oct 26, 2010 | 08:42 AM
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Hambletonian's Avatar
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From: London
Default Re: Occasional Slow Acceleration

Just for kicks, it wouldn't hurt at all to reset the throttle response memory so as to fairly assess the IC pump issue.

Good luck. Hope you can take advantage of the 60-day powertrain warranty.
 
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Old Oct 26, 2010 | 02:51 PM
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oledoc2u's Avatar
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Default Re: Occasional Slow Acceleration

Originally Posted by Hambletonian
Just for kicks, it wouldn't hurt at all to reset the throttle response memory so as to fairly assess the IC pump issue.

Good luck. Hope you can take advantage of the 60-day powertrain warranty.
nothing wrong with reset, but you do know when the pump isn't functioning....absolutely no power, slower than an N/A....
 
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Old Oct 26, 2010 | 04:29 PM
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major187's Avatar
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Default Re: Occasional Slow Acceleration

Yeah its the intercooler for sure. I've decided to just bite the bullet and buy and install myself. It seems useless to go on a four hour road trip just for an intercooler. Any recommendations on which one to buy? Preferably just one that will bolt on with little to no adjustments. And your correct, it takes off much slower than my N/A occasionally.
 
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Old Oct 26, 2010 | 04:42 PM
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oledoc2u's Avatar
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From: IN
Default Re: Occasional Slow Acceleration

just look for the "how to" in the seach feature....most are going with the johnson cm30...a little hose difference in size, but it will clamp down enough not to leak, and the wiring of course...I will see if I can find it, and post it up for you....

well, not doing so well...go the search and punch in " johnson pump install"...the very first thread is about an install picture for picture...
 

Last edited by oledoc2u; Oct 26, 2010 at 04:52 PM.
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Old Oct 26, 2010 | 05:08 PM
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major187's Avatar
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Default Re: Occasional Slow Acceleration

Thanks I appreciate it
 
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Old Oct 26, 2010 | 05:12 PM
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oledoc2u's Avatar
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From: IN
Default Re: Occasional Slow Acceleration

Did you see I was in your neighborhood Major? I saw a roadster at 65/33 while going west, he was headed east toward Indian Lake...anyone you know...
 
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Old Oct 26, 2010 | 06:01 PM
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KrzyFast's Avatar
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From: Currituck, NC
Default Re: Occasional Slow Acceleration

X100 on the IC pump. If it went like stink then went like a geo metro running on 2 cylinders, IC pump died. Easy, but annoying fix.

As for the install.....the instructions on here are great! The big difference in the stock pump and the johnson pump is the diameter of the pump itself. It is much smaller and won't fit the stock bracket propertly. It is recommended to use a bicycle tire innertube, but I found a regular sized, foam Kooze trimmed down to the proper length and wrapped around the pump works great!

For the Kooze, pull the bottom off of it and split it, so you can lay it flat. Now wrap it around the new Johnson pump and trim the overlap excess. Once the excess is trimmed, wrapp your new and awesome pump and stick it in the stock bracket, install the pump, clamp the two hoses down tight, top off the coolant - remembering to get the bubbles out and then go run the hell out of your new car! I promise it won't run like a geo metro after the install - just watch out for the po-po's in your area. 0-jail in about 5 seconds flat.

Enjoy!

Cheers,
KrzyFast
 
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Old Oct 26, 2010 | 06:04 PM
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major187's Avatar
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Default Re: Occasional Slow Acceleration

If it was a black N/A roadster then there is a high chance that it was a neighbor of mine that camps right across the channel from me. But Tom Ahl in Lima sold a good amount of crossfires, so they may have passed through. How far from the lake are you located?
 
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Old Oct 26, 2010 | 07:30 PM
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Daytona Bob's Avatar
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From: 05 SRT Conv in Daytona!
Default Re: Occasional Slow Acceleration

Thanks for posting this I have the same issue.

Thought I was crazy.
 
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