ok this is really pissing me off! my 89 iroc tpi 350 will not stop messing with me first my gas milage dwindles down to 2 mpg then my maf goes out then i get codes for my o2 sensor, my maf burnoff relay my maf power relay my tps and now my fuel pump wont work! i am really getting pissed off here i just replaced my o2 sensor and my fuel pump a couple months ago what the f@ck is going on? this is help!

 

try resetting the ecm. Some problems and/or malfunctioning sensors will trigger other codes that are unrelated to the problem. For instance, a bad fuel pump can trigger a lean 02 code because of the loss of pressure under load. Once its reset, then record any codes as they come up. That will at least tell you what errors the computer is still seeing.

 

i already did that and nothing!

 

how does the car run now, assuming it is running at the moment. As for the fuel economy, i wouldnt trust the gauge. With $5 in the tank mine will go from empty to full and everything in between when im driving around.

 

Sounds like a rat has chewed through your wiring harness. You should check the main harness for a short and please don't tell me this all started after you pressure washed your engine.

 

funny you say that cause we are having a mouse problem in the garage do you think the mice are ****ing with my car. i just ran a bunch of tests on my fuel pump circut and the only thing that could be bad is my fuel pump according to the checklist it wont run with 12 volts applyed to any part of the pump circut i noticed that my 20 amp fuse under the hood was blown so i changed it and now my ecm works again and im pretty sure that blew when i accidently tried to start the car after a diagnostic test the jumper wire was still in the aldl test connector but that still does not explain all the rest of the car going haywire o-yea i forgot to mention my selinoid does not always engage either do you guys think my computer is to blame? o-yea in case you guys havent figured it out yet my car cranks but will not start.