coupe d'mike

changed o2 sensor, temp sensor, plugs, cap, rotor, found a vacuum leak. also slight power loss from 3500 - 4200. haven't pulled the codes yet.

next on list??

a. cat
b. replace all vacuum lines
c. suck it up and take it to a shop

i'm at an impasse.

MikTip

the Hall sender?

90/90Qs

hmm is that(miss) a common symptom of a hall sender problem?

MikTip

but a possible one.

Could be the MAF?

Or the ignition sensors?

Process of elimination...

litay

thas a long troubleshooting list.. better pull the codes.

coupe d'mike

new to electrical diagnosis. does every bad sender throw a code?

litay

you can test the resistance of the sensors to individually diagnose them. and any sensor that is not contacting correctly and not sending signals to the ecu will send a code. if the ecu is not functioning properly, then yes a bad sensor may not give a code.

Afterthought

I had a different power loss due to bad knock sensor wiring , couldnt figure it out for a while but as soon as i pulled the codes i had it fixed in a day (and a WAD of cash for 2 sensors)