Surge Problem Fixed!

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Aug 27, 2012 | 07:11 PM

MauleOne

Thread Starter

Elder User

Joined: Jul 2010

Posts: 610

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From: Sequim. WA

Surge Problem Fixed!

I have been chassing an intermitent problem with my E99 PSD.

It would go for days with no problem then suddenly it would start surging at part throttle.

Acceleration was ok but you could not get it to stabilize when you wanted to go slow and steady.

I kept changing the programing and that seemed to cure it for a few hundred miles. Then it would do it again.

I happened to be working under the dash one day and thought I would spray the throttle position switch with some electric cleaner.

Wow! A new truck. It runs great and no more surge problem. Even sounds different. Starts right up and runs clean.

I didn't even take the accerator pedal apart, just gave it a good spraying down.

I bet that throttle position switch was really dirty. Probably been collecting dirt since 1999 when it was installed.

Now the problem it leaving it alone. I want to take it out an really clean it but am at a remote location in Alaska and am afraid it might fall apart and I would be stranded.

Any how, give it a try if you have intermitant engine problems. I is a cheap fix.

Aug 27, 2012 | 07:15 PM

BigAlsPSD

Post Fiend

Joined: May 2009

Posts: 5,470

Likes: 3

From: Pea Ridge, AR

Good deal, generally an easy way to diagnose this would be to use cruise control and see if the issue goes away as well.

Aug 27, 2012 | 07:16 PM

arcticatdan

Mountain Pass

Joined: Apr 2010

Posts: 178

Likes: 2

From: Northeast, WA

Great, I will try it. I have been chasing mine for a while. Thanks for sharing.

Aug 27, 2012 | 07:22 PM

beanhead6D5

Posting Guru

Joined: Dec 2007

Posts: 2,290

Likes: 2

From: SEMO

I hope it stays working for you! It would suck to have to walk home from Alaska.

That will be a cheap fix if it goes away and stays away.

Aug 27, 2012 | 08:14 PM

BadDogKuzz

Postmaster

Joined: Dec 2010

Posts: 2,951

Likes: 4

From: Gary,Indiana

I am glad it cleared up your problem. I too have a E99 and never had a surging problem UNTIL I rebuilt my turbo and went with a 1.0 turbine housing. So I have been blaming the lag and surging on the bigger housing. But I must say that since I added the 1.0 housing this E99 pulls very strong now on the top end. It couldn't hurt to clean the throttle position switch see if that improves things any. Thanks for the tip !!

Aug 27, 2012 | 09:29 PM

MauleOne

Thread Starter

Elder User

Joined: Jul 2010

Posts: 610

Likes: 0

From: Sequim. WA

Surge

Good point BigAlPSD

It did run ok with cruise control. It was only at low speeds (like parking lot speeds) that it would surge and be impossible to drive slow.

Now it feels good at all speeds and sounds better.

I am delighted with how it runs now (new injectors, new T-500 HPOP, SCT programs from DP, Swamps IDM, BD trans and tq conv, new tires etc, etc)

It is fun now!

Last edited by MauleOne; Aug 27, 2012 at 09:30 PM. Reason: spelling

Aug 28, 2012 | 09:34 AM

Toreador_Diesel

FTE Leadership Emeritus

Joined: Sep 2003

Posts: 12,253

Likes: 763

From: Houston, Texas

Saw this post last night, went out and sprayed the pedal, trans harnesses, and fuel pump connectors (all of which were cruddy) and VOILA!

Pedal is noticably smoother, trans shifts crisper than it did before, it's amazing what 12 years and 351K of road grime can do...

Reps to you sir!