Shudders

My TC is shuddering in all gears, even reverse. Im taking it to AutoZone today, and pull the codes, but does anyone have any idea why it is happening?!??!

It doesnt stop after a few miles, or 15 mins, it seems to be suffering, under load.

Any and all help is GREATLY APPRECIATED!!!

If any questions need asked about the situation, I will give the most details I can....

Thanx...

Mark

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'88 TC, Black, 154K
Coming Soon - K&N filters, Gillis Valve, and who knows what else....
Mjrs_88_TC in the Showroom
Accomplished -
New - Sumitomo Tires 225/60VR16 and they grab.
Possiably - Another headache

[This message has been edited by Mjrs_88_TC (edited 02-27-2004).]

be sure to record the codes as they are presented and for each part of the test.

Have you still got the original fuel pump?
How old is the fuel filter?

Is it an a4ld??The tranny is going out or needs a flush.Shudder is normally tranny and studder is engine.

Originally posted by Mjrs_88_TC:
My TC is shuddering in all gears, even reverse. Im taking it to AutoZone today, and pull the codes,

I need to take my car to autozone, for the codes, i called today and they said they dont do cars that old. Have you taken it there before?

[This message has been edited by Harvs (edited 02-28-2004).]

Well Auto Zone did pull the codes today, and they were...11 14 27? 42 72.

Ok what am I looking for?! and what needs attention?

11 = system pass, probably that the KOEO part of the test is OK

14 = intermittent loss if PIP signal by the ECA. Could be bad TFI or PIP, Could be bad plugs or plug wires

27. VSS signal voltage too low

42 = 02 sensor is always showing rich. Was the 42 a CM code or a KOER code?

Erase the CM codes, drive the car a couple days and then pull the codes again.

I would highly recommend you get equipped to pull the codes your self, either by buying a scanner or by one of the cheaper methods you can find in articles in the Technical Articles section.

All codes were taken in KOEO, but everytime the code scanner was turned on my fan began to run.

I reckon Im gonna change plugs and wires tomorrow.

How do I remove the CM codes? I'll look in tech.

Pete, the way the car is running, I dont want to do any damage that I cant afford, this is my daily driver.

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'88 TC, Black, 154K
Coming Soon - K&N filters, Gillis Valve, and who knows what else....
Mjrs_88_TC in the Showroom
Accomplished -
New - Sumitomo Tires 225/60VR16 and they grab.

The fan is supposed to run when you turn the code reader on with koeo. Mine always has done it anyway.
From the tech article: "To erase the continuous code memory codes, rerun the KOEO test, and disconnect the jumper wire or disconnect the STI connector from the commercial code scanner while the codes are being outputted."
I just turn off my code reader in the middle of code output and that clears it.

So far as shudder, is it an automatic or 5 speed (as karnage asked)? Does it do it when the car is not moving (meaning it's shaking/rattling like a bad motor mount)?

It could be any number of things like the other posts above stated. I had a simular problem and it turned out to be a clogged cat. Just something to look for if you rule out all the other possabilities.

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Tony Sceia
Red 88 TC loaded with every option, Walbro 255, 3" SS Downpipe with Magnaflow SS 2.5 Cat Back Mustang Dual system Installed by BJL, 3-core Radiator, Star Stage 2 Clutch, Rebuilt T-5 Tranny, 140 MPH Speedo

Now I need to finish converting to Raven/Gray Leather interior & just do some Body work & she'll be like new.

Ooops it is a 5sp, and thinking about it more it maybe a clogged cat, It started after a good run on the interstate, and it seemed to get worse the next day or two after.

Ill be looking into that this afternoon.

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'88 TC, Black, 154K
Coming Soon - K&N filters, Gillis Valve, and who knows what else....
Mjrs_88_TC in the Showroom
Accomplished -
New - Sumitomo Tires 225/60VR16 and they grab.