Can't get the CEL to display codes

[danalyse]

I have pumped the gas pedal five times to the floor within a short period of time while the key is in the on position. Cannot get the CEL to flash the codes sequences. Any tips? Thanks.

[jlevie]

What year car? The stomp test only works on cars with a 173 or later DME (introduced on 325i/is cars in 9/87). For the stomp test to work, both the idle and WOT switches in the TPS must operate. A bad on mis-adjusted TPS will prevent the test from working.

[vr2jetta]

What year car? The stomp test only works on cars with a 173 or later DME (introduced on 325i/is cars in 9/87). For the stomp test to work, both the idle and WOT switches in the TPS must operate. A bad on mis-adjusted TPS will prevent the test from working.

My tps is bad and I have to do the stomp test 5-7 times before I can get it to work.

[E30stan]

mine just stopped showing codes, i must have tried it a hundred times, what the heck?

[E30stan]

What year car? The stomp test only works on cars with a 173 or later DME (introduced on 325i/is cars in 9/87). For the stomp test to work, both the idle and WOT switches in the TPS must operate. A bad on mis-adjusted TPS will prevent the test from working.

you were right, after changing the tps, the test works easily, and i thought i was getting the 5 stomps timing wrong