Possible ECU problem...
#27
Yeah, the pressure is sometimes pretty low, and then sometimes normal. The "jolt" is really like when it suddenly loses power, and it throws you kinda forward, and then back when it regains the power. I noticed today, after cleaning the AFM connector REAL good and tightening the connectors in the harness end that it ran good all the way to Wildman's house, then I left there, and it started doing it again. I went to a store, and when I got outta the store, it was ok, til my clutch foot slipped and hit the ECU cover panel, then it started bogging again. Going later to check all the connections around there. Is the green light visible if I use a mirror behind the ECU, or do I need to take it all the way out to see it??
Thanks
Carl
Thanks
Carl
#28
For that green light on the ECU you just need to remove the kick panel covering the ECU to be able to see the light on the bottom of it. Maybe check your ignition? My car was weird like this. It would run awful at cold and then better at warm. Then eventually it started running really good when I'd start it up. I'd shut if off, come back and it would be running like crap. I switched out the AFM and put a new one in, started it the next day and it ran perfect. Let it sit to cold and then it ran like crap. My Ignition Module was pretty much dieing. Once I changed that and reset my timing it fixed pretty much all my problems. That's just a thought. It may not be your answer, but before I did that I put in a new O2 sensor, AFM, Remanned Injectors, CHTS, Air Regulator, new FPR, swapped TPS with my other car, new Fuel Filter, new Dizzy, Cap, Rotor, Wires, and Plugs.
#29
Ok, so what me and Wildman were thinking was that since for the last month or so, I've been having to be REAL frugal with gas purchasing, since I lost my job just before Christmas. Its basically been at about 1/8th tank or less, so it may be picking up crud from the bottom of the tank. Thankfully, I start a better job monday (mo' money for parts, etc....LOL)so that may be resolved soon and a new fuel filter, along with some other neglected staples, and possibly a tank cleaning. Anyone know what something like that would cost, about?
Hoping thats the issue...
Carl
Hoping thats the issue...
Carl
Last edited by Carl's Z; 01-17-2007 at 01:04 PM.
#30
Picking up crap / not getting enough fuel.... I've never run my Z out of gas, but I used to see how far I could go on a tank in my 87 4Runner. Not long after the fuel light came on, it would start jerking & studdering... then be fine.... jerk... studder... fine...
It could be.
Fuel filter.... $10. Look at your old filter before doing any tank cleaning. Doing a tank cleaning sucks & usually not required unless you have rust chunks floating around.
It could be.
Fuel filter.... $10. Look at your old filter before doing any tank cleaning. Doing a tank cleaning sucks & usually not required unless you have rust chunks floating around.
#31
Congrats Carl on your new job! Great to hear bro'! Now you can start climbing out of your hole. LOL Anyway yeah I still think is is because you are sucking stuff from the bottom of the tank. And I agree with NismoPick, tank cleaning is a little extreme, and I even think, not necessary, and would be a waste of time and money.
#32
Originally Posted by Carl's Z
Found this in an old post from '04. What do you guys think???
"I had a problem close to this last fall. The car ran fine cold but went to hell after it was warmed up. My problem turned out to be the oil pressure switch. The oil warms up, starts to thin some and poof the pressure falls. My 83 zx n/a has the shut down feature. The oils pressure drops and the fuel pump shuts off. My gauge never showed no pressure (around 30 psi or so) new switch and great pressure. Never had the problem again. If I were you I would slap a new pressure switch in it, could be a simple solution for what seems like a big problem. Takes 2 mins. and about 20 bucks to do. Oh yeah a 14mm wrench too."
Let me know
Carl
"I had a problem close to this last fall. The car ran fine cold but went to hell after it was warmed up. My problem turned out to be the oil pressure switch. The oil warms up, starts to thin some and poof the pressure falls. My 83 zx n/a has the shut down feature. The oils pressure drops and the fuel pump shuts off. My gauge never showed no pressure (around 30 psi or so) new switch and great pressure. Never had the problem again. If I were you I would slap a new pressure switch in it, could be a simple solution for what seems like a big problem. Takes 2 mins. and about 20 bucks to do. Oh yeah a 14mm wrench too."
Let me know
Carl
Thread
Thread Starter
Forum
Replies
Last Post
Bookmarks