PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

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Old Apr 20, 2004 | 11:43 AM
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From: East Side Performance! mASShole
Default whats this?

code 121?
thanks.
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Old Apr 20, 2004 | 12:59 PM
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Thats for throttle position.

Usually that is thrown when your TPS sensor starts to go, or your throttle blade exceeds the allowable limits of the TPS.

We'll take a look at it when you come down later today.
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Old Apr 21, 2004 | 03:20 PM
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ok, it was ok i guess.
im starting to reach my limmit.
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Old Apr 22, 2004 | 12:13 AM
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Hang in there Brad.

There is nothing worse when things start to go wrong, then go wrong again, then go wrong again then go........... you get the point.

Eventually, you get over the hump and everything works out.


I took another look at your car again today and did a little math according your injector pulsewidth. According the numbers you should be running at an 13.8:1 during normal operation. However, for some odd reason you are running at a 17:1 a/f until you get under boost.

The running theories right now are:
1) Giant vacuum leak
2) Injector driver malfunctioned
3) Bad MAF
4) Bad ignition system (reluctor wheel boofed or crank pickup boofed).

We are looking into all of these things currently. You'll know as soon as something pops up.
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Old Apr 23, 2004 | 08:42 AM
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From: East Side Performance! mASShole
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Thanks for the input.

I am getting realy upset, we did everything so right, i spent so much time tring to make it look good, now ive had so many stupid issues it is all down the poop shoot, yes i said poop!
But I know you guys will figure it out. i'll be down on sat to see some tuning and play with my car.
see you then
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