spontaneous jerkiness / roughness under light throttle

Hondata installation questions / answers / issues.
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ITR 1102
Posts: 148
Joined: Sun Sep 10, 2006 9:52 am
Location: Topeka, KS

spontaneous jerkiness / roughness under light throttle

Post by ITR 1102 »

Under steady speed / light throttle, motor jerks / bucks for no known reason.
I have a Omni power TPS sensor; calibrated via volt meter to spec.

Romeditor reads negative numbers, sometimes as low as -9 % when letting off the throttle, but settles at 1% when idling.

Could the TPS be the problem?

I have tried a new stock map sensor and already changed the map plug because of a bad connection.

Here is a datalog and the rom I am using. The car acts the same way with the stock ecu, so I think it would be due to a bad sensor, but no codes.
Attachments
stock itr calibration 10-24-08 bin file.bin
(32 KiB) Downloaded 136 times
datalog 1116.rar
datalog
(209.91 KiB) Downloaded 149 times
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Spunkster
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Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata

Post by Spunkster »

Any negative reading means there is either a problem with the tps sensor or with the thottle body.
ITR 1102
Posts: 148
Joined: Sun Sep 10, 2006 9:52 am
Location: Topeka, KS

Post by ITR 1102 »

I put the original sensor back on this evening and calibrated it. So far so good but I will just have to wait and see.
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