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Discussion Starter · #1 ·
I can hear what seems to be knock but but scan tool only shows 1* or 2* retard sometimes none at all. This happens on the end of a quarter mile run. Is this knock or am I running out of fuel?

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87 Turbo T WE4 TE 44
868 Injectors, 3"Down Pipe, Poston Headers and Cross Over Pipe, 2.5" Dual Exhaust, SMC Alcky Kit, 204 204 Cam, Scan Tool, Thraher 92 Chip, Reds 93 Chip, and Casper Thumb Wheel Chip
http://shanebuickwe4.homestead.com/shanewe4.html
 

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Resident Idiot
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Try a new knock sensor. Make sure to torque it to specs..

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Email Address: mailto:[email protected][email protected]</A>


Current Combo: Stock Turbo, V4, MSD50's, TH DP, JayJackson 62mm TB, 16position MaxEffort Chip.
12.35 & 108.39 Street Trim.
 

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Discussion Starter · #3 ·
Anyone know the torque specs for a knock sensor?
 

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14 FT LBS

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Email Address: mailto:[email protected][email protected]</A>


Current Combo: Stock Turbo, V4, MSD50's, TH DP, JayJackson 62mm TB, 16position MaxEffort Chip.
12.35 & 108.39 Street Trim.
 
G

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What scan tool are you using ?

We like to hand tighten the knock sensor and then give it a very slight snugging with a socket, an absolute as little a clock-wise a turn as possible.
Then we check the knock sensors integrity with a very simple 60 second test.


Ron

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Ron's Custom Automotive
Certified NJ Emission Repair Facility
1-800-718-7667
GSCA # 2306 / PR Director
www.ronscustomauto.com
[email protected]
 

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Discussion Starter · #6 ·
I'm using an Auto Xray EZLink. By the way what does your 60 KN sensor test entail?

[This message has been edited by TurboShane (edited December 29, 2000).]
 
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Originally posted by TurboShane:
I'm using an Auto Xray EZLink. By the way what does your 60 KN sensor test entail?

[This message has been edited by TurboShane (edited December 29, 2000).]

Get the motor warm.

KOEO, very lightly tap immediately adjacent to the knock sensor mounted on the top rear of the block. Your ECM should acknowledge and data stream out slight retard values.
The harder you tap, the higher the retard value should be acknowledged.
Note: Some chip burners program so as the ECM cannot acknowledge knock at KOEO or at idle. Suggest you check with your chip programmer for final determination of this aspect.
After the KOEO test, repeat this proceedure with the motor idleing and also at 2,000 RPMs. The same basic knock values should be seen by the ECM in these two modes also.
If the ECM reacts as specified above, you can be pretty sure the knock sensor is doing it's job properly.


Ron


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Ron's Custom Automotive
Certified NJ Emission Repair Facility
1-800-718-7667
GSCA # 2306 / PR Director
www.ronscustomauto.com
[email protected]l.com
 

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Discussion Starter · #8 ·
Thanks for all the good info.
 
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