lamda probe upper limit

[trinialexis]

i have a 2000 toledo it started to buck in idle,dealer said it was the lamda probe ,had it replaced same problem 'lamda probe 'upper limit'.can anything else be causing this problem

 

[m0rk]

quick run up on the diagnostics will confirm if the probe is dead.

it's likely that the dealers done this & that's what needs replacing

 

[trinialexis]

lamda problems

replaced it with a new one,cleared fault codes,worked well but a few hours after same problem

 

[m0rk]

what engine is it?

 

[trinialexis]

lamda probe

it is a 1.6 SR

 

[m0rk]

does it have a MAF sensor, or MAP sensor?

 

[trinialexis]

i think it has a MAF sensor