I just got my third Fiero and its a 1984 iron duke automatic. Just like my first one. There are a few problems with it I am not pleased with but my main concern is the lack of power, the car barely reaches 50 mph on top of that the tachometer is wayyy off as soon as you start the car it reads 3000 rpm but you can hear the rpm is nowhere near that. Sometimes coming to a stop the car will die. It has new plugs wires, the intake hat is gone and its missing alot of vacuum lines from what I can see. If anybody has an idea what's going on let me know, the map sensor and EGR are hooked up.
Well went out and played with the vaccum lines as soon as I started the car it sounded like there was a huuuuge vacuum leak only to find out it was actually the TB spraying so hard it sounds like a vaccum leak I went threw and plugged all of the bad leaks and nothing happened I unplugged the vacuum line to the egr and its still doing the same thing. Anyone know what's up with this mess? If I had the money I would already be swapping out this god forsaken thing
The body and most of the interior are nearly immaculate the engine bay needs alot of love the wiring harness is all over the place and alot of the stuff is hashed together, I'm honestly surprised it runs. I plugged all of the iffy vacuum lines and everything seems normal based off of the diagram. I haven't tried driving the car due to the piles of snow and fear of the car getting stuck. Under heavy throttle trying to move the car you can hear it bog out and start to miss
I doubt its the cat as its not the original and the fuel filter is brand new. The only thing I haven't checked is the cap and rotor and I still can't figure out this tachometer problem 3000 rpm just is not right and when you rev the motor it tries to wrap all the way around. I need to find a fix for the radiator fan before anything though. Anyone know how to wire up a quick on/off switch
Well went out and played with the vaccum lines as soon as I started the car it sounded like there was a huuuuge vacuum leak only to find out it was actually the TB spraying so hard it sounds like a vaccum leak
I doubt you will be able to hear a vacuum leak with the air cleaner lid (intake hat) missing.
I did the normal tricks to try and turn the fan on when the car started to get hot. I opened the bonnet and lone behold the harness that plugs into the fan is missing and the fan is a Jerry rigged the plug harness is chopped and is only Being held on the. Radiator by one bolt and a zip tie
Well I got some new vaccum lines and changed alot of the stuff that was just straight up weird. Found out the IAC is bad and I think the cat is plugged I pulled out the O2 sensor and the car ran alot better it actually had some power but for some reason it started to backfire a little bit. The cap rotor and wires are all new. So I'm thinking this is a fuel/ vaccum thing I also changed the map sensor. I'm going to cut off the catalytic converter and see what happens
Well I checked the pcv valve to see if its any good and... Its gone wtf? Could be causing some of my issues. Since the IAC is stuck what issues does it normally cause?
Nevermind found the pcv valve. Now I have to throttle the car to keep it going. But I am on empty so I think its just out of gas. I will put some gas in it later and find out
Nevermind found the pcv valve. Now I have to throttle the car to keep it going. But I am on empty so I think its just out of gas. I will put some gas in it later and find out
I have fuel and spark, I just have to press the throttle to start it and it doesn't stay running long, I'm starting to lean toward a fuel issue now but it seems normal at idle it sprays just enough fuel to stay alive and when you move the throttle it sprays more fuel. The car sound alot better now that the vacuum lines are in order. I need to get this thing healthy enough to get it over to my friends garage grrrr. I don't have the resources to drop the tank right now to see if the fuel pump is taking a crap
check- timing clogged cat egr not closing - common issue fuel pressure - not always pump - line between pump and hard line splits compression - sometimes ring just worn out
Might be the fuel pressure regulator,but if its been sitting for more than a year,its internal tank rust and the fuel pump (fixable). Read my post here: https://www.fiero.nl/forum/Forum1/HTML/088012.html
[This message has been edited by James Bond 007 (edited 12-19-2013).]
EGR is good, next I will check the cat since I pulls the o2 the car actually had some power. Then its timing the gas tank will be last. I know the idle problem is the IAC is stuck
Well now the problem in having is the car won't stay running unless you have your foot on the throttle, in fact it won't even start. I checked the plug wires and they were advanced two posts on the distributor so moved them back two posts and the car wouldn't start. I advanced each wire one post and it runs but still won't start without my foot on the pedal. Would the broken AIC valve cause this?
