mx5 not holding high revs ?

[lorcan]

lads i have a mx5 in the garage and it came in with t.p.switch disconnected ,car runs perfect but when connected it wont hold revs over idle tried second hand throttle body but exact same prob.any ideas

[abrittis]

Hello,

What year Miata? Some of the early to mid 90 Miatas had problems with the spark plug wires. After 3-4 years or 30K miles, they would become leaky and cause loss of power in during high load, quick acceleration, or high revs. Not sure if this is your problem, just stating a common problem w/ early wire sets.

Anthony

Originally Posted by lorcan

lads i have a mx5 in the garage and it came in with t.p.switch disconnected ,car runs perfect but when connected it wont hold revs over idle tried second hand throttle body but exact same prob.any ideas

[lorcan]

thanks for the info but car is 98 mx5 and trouble is when throttle position (tp) sensor disconnected car will rev up no problem its when connected it wont hold revs