guygordon

Thanks for your input.

My 1987 is surging slightly with steady and constant revs at 2000-3000RPM. Idle's fine with some occasional lumpiness.

New plugs, cables, etc. Did not fix problem.

What do you think? Vacumm, seal, etc. leaks? O2?

TPS? (usually idle related, right?)

Thanks again

Guy

rico05

So you are saying that when the car is sitting it idles fine, but if you give it gas, it surges? TPS all the way.

guygordon

Thanks for the reply.

Okay at idle, okay on acceleration.

Maintaining a constant and steady RPM, with or without load, it surges, lugs, chugs. Drop down gear, and it's okay, until holding a steady RPM.

Chug, chug. Lug, lug.

Rgds
Guy

j9fd3s

iTrader: (3)

mine does the same thing: when you are cruising at a steady speed it will be ok and then stumble and then be ok, and repeat? i think its related to the 02 sensor, i had an air fuel ratio gauge and when it went into closed loop it would do it. its either the o2, the o2 wire, or an exhaust leak?

mike

rico05

See, mine would do that, and after I adjusted the TPS, it stopped and never surged/bucked again.

The 7

Yeah i have an 87 na and i just found mine does the exact same thing?

What do you have to check?
does anything need to be replaced?

Ingenious Biped

That sounds exactly like the throttle positioning sensor (TPS):

-try giving it a little shot of fluid film

-replace it

next time it does it, pop your hood and manually push it in once or twice, and see if it frees it up then hit the sticky thing with fluid film (not wd40 it will dry it out and increase the problem)

Biped

The 7

SOMEONE PLEASE

DROP ME A LINE HERE GUYS

what the hell is a TPS?????
How do i adjust it

The 7

oHHHHH ok thanks
no more from me