rookkwst17

i started having some problems where when i rev my rpms it won't rev past 3000 and seems to pulsate this came out of nowhere and have now idea. lookng for suggestions thanks it starts just fine and idles okay you wouldn't know there was a problem until you give it some gas

another7driver

what series? turbo/na?

My first thought would be secondary injectors dirty/failing but we should have a lot more information to help diagnose this issue.

rookkwst17

it's an 87 NA not sure of the series.

rookkwst17

this problem workd itself out

Aaron Cake

iTrader: (1)

And the cause was?

You are likely facing a bad ECU ground at the engine.

rookkwst17

not sure let it set over night tried it the next morning hasn't happened again.

EvilRB

iTrader: (4)

glad it worked it's self out but try some injector cleaner anyways just in case.

rookkwst17

thanks for the reply. i put some seafoam in it and filled up the tank

Skaterking

Did you recently wash the car? Or did it rain?

rookkwst17

nope

Aaron Cake

iTrader: (1)

Injector cleaner won't help. It's nothing but snake oil.

An intermittent problem will reoccur again, probably at the worst time possible.

A good first step is to check your grounds:
http://www.aaroncake.net/rx-7/grounding.htm

rookkwst17

i'll check the grounds as soon as i get this other problem worked out. you guys are awesome this forum has been a big help.