You ask for advice and then you tell us what advice you don't want.... Well, if you don't hear your fuel pump when you turn the key I have some bad news...maybe.
[This message has been edited by Gall757 (edited 11-07-2013).]
Fuel pump Fuel pump relay Fuse Plugged fuel filter ECM Plugged fuel sock or fuel lines Out of gas Bad wires/grounds...
I got gas. The fuel filer is new. The ECM is also new. OK, what particular fuse needs to be looked at (replaced?). I'll look at the fuse first, then the fuel pump
Thanks for the reply's sirs. Cordially, kevin
[This message has been edited by kevin (edited 11-07-2013).]
I got gas. The fuel filer is new. The ECM is also new. OK, what particular fuse needs to be looked at (replaced?). I'll look at the fuse first, then the fuel pump
Thanks for the reply's sirs. Cordially, kevin
After the fuse...check the relay. Do you have a voltmeter? You can listen for the click of the relay, but it's best to disconnect the connector at the firewall that goes down to the pump and see if you're getting a 12V signal going to the pump when the key is turned. If you are, then you can disconnect the fuel line just before the fuel filter (make sure you have a bucket and rags). Should get a stream of fuel when the key is turned on. If you aren't...bad pump (or something bad in the tank, such as plugged sock, or broken hose connector at the pump). If you do get fuel up to the fuel filter, reconnect fuel filter and disconnect AFTER the fuel filter and recheck.
Never assume a replaced part is automatically good...even new parts can be faulty.
No movement then like cam gear went south. Mean no ignition and ref to ECM. ECM Will Not "send" injector "signal." (ECM grounds that circuit to inject fuel.)
quote
Originally posted by FIEROPHREK: The main fuse in question is the "TBI 1" fuse. You will not have a "TBI 2" fuse because your have a 4 cyl.
Both are unused in 2.5. TBI gets power from ECM fuse.
------------------ Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should. (Jurassic Park)
Fellas, I should add that my '85 Duke started and ran last week. When I subsequently took apart my HVAC cluster, etc. i forgot to disconnect the battery i think I shorted the fuel pump Is there a fuse under the dash that I need to change? Cordially, kevin
Fellas, I should add that my '85 Duke started and ran last week. When I subsequently took apart my HVAC cluster, etc. i forgot to disconnect the battery i think I shorted the fuel pump Is there a fuse under the dash that I need to change? Cordially, kevin
Ayup, grab a pair of needle nose pliers or flat nosed pliers and pull them one at a time, check and put back in if its good, you never know you might not even have a bad fuse, it could be just a bad connection at the fuse and removing and replacing could clean it up enough to make it work.
Steve
------------------ Technology is great when it works, and one big pain in the ass when it doesn't
Fellas, I looked at the under dash fuses, one at a time, all good. However, there are two silver 'fuses' which sit right next to each other, upper left corner on the fuse box. Do I need to replace these? What do they do? Could these two items be my problem?
Fellas, I looked at the under dash fuses, one at a time, all good. However, there are two silver 'fuses' which sit right next to each other, upper left corner on the fuse box. Do I need to replace these? What do they do? Could these two items be my problem?
Cordially, kevin
If you have power windows those are for them. Do you have a test light? Check for power on the fuel pump fuse. If no voltage check fuse links.
If you have power windows those are for them. Do you have a test light? Check for power on the fuel pump fuse. If no voltage check fuse links.
Yes, I do have power windows, I have a 85 SE. Where do I find the fuel pump fuse? Where can I find the fuse linkss? Dumb question, sure. But that is how you learn..... Cordially, kevin
List the steps you've done to troubleshoot in detail...
(I'm thinking you may have skipped some steps listed above...)
[/QUOTEN Neils88,
First: I checked all the fuses under the dash--all good Second: I placed an empty jar under the point where the gas enters the fuel filter, cranked the engine--no gas is entering Third: I rechecked, and then rechecked again for any possible loose connectors and/or wires
The problem first started when I plugged in my HVAC connector. I am/was putting in my subwoofer system again after an 6 year haitus not driving the FIero. Before plugging in dash HVAC control unit, I DID drive the car. It ran great! No problems. After I parked the FIero, I subsequently then plugged in the HVAC control unit. I then cranked the engine over. I then heard a 'clicking' sound in and around this HVAC unit. The following day, I then attempted to restart the car, and it crtanked, but would not start. The members above have given me some suggestions. It seems to me there must be a fuse, or a another type of relay designed by GM, to protect the fuel pump. Am I correct? What do I do next? I tried to listen for the fuel pump copming on, but since I am working alone and am not adept in electrical stuff, I feed I can only get new ideas from guys like yourself. Cordially, kevin p.s. the electric windows work
Yes there is a fuel pump relay. You should be able to hear the fuel pump because it is right next to you when you start the car....under the armrest. If you hear nothing, check the relay which is on the firewall behind you in the engine compartment.
The fuel pump not priming and the check engine light both are indications that the ECM isn't working. Most likely when an ECM doesn't work it is because the ECM isn't getting what it needs to work.
--- The ECM reset should be located by the battery on your 85 2.5.
--- Lets start with this. Test to see if you jumper the fuel pump relay, will the fuel pump then run. First locate the fuel pump relay. It is bolted to the firewall, inside the ENGINE compartment, in a location that is pretty much right behind the driver. Most likely there are more than one relay there. Locate the one with wires that are colored Dk. Gree/White, Orange/White, Tan/Black, and Black or Black/White. Unplug the relay from the socket. There are two tangs that hold the relay in the socket. With the relay unplugged take a U shaped paperclip and stick it in the holes for the Orange/Black and Tan/White. When you do so the fuel pump should run.
If the fuel pump runs that indicates your fuel pump is good and you fuel pump fuse is good.
I agree with phonedawgz...you need to split the system and find out if the problem is in the tank or out side. Follow his steps to see if bypassing the fuel pump relay works, then let us know for the next step.
The fuel pump not priming and the check engine light both are indications that the ECM isn't working. Most likely when an ECM doesn't work it is because the ECM isn't getting what it needs to work.
--- The ECM reset should be located by the battery on your 85 2.5.
--- Lets start with this. Test to see if you jumper the fuel pump relay, will the fuel pump then run. First locate the fuel pump relay. It is bolted to the firewall, inside the ENGINE compartment, in a location that is pretty much right behind the driver. Most likely there are more than one relay there. Locate the one with wires that are colored Dk. Gree/White, Orange/White, Tan/Black, and Black or Black/White. Unplug the relay from the socket. There are two tangs that hold the relay in the socket. With the relay unplugged take a U shaped paperclip and stick it in the holes for the Orange/Black and Tan/White. When you do so the fuel pump should run.
If the fuel pump runs that indicates your fuel pump is good and you fuel pump fuse is good.
Thanks kindly, I got to ask you, is there a YouTube video showing me how to do this?
Well, if you don't hear your fuel pump when you turn the key I have some bad news...maybe.
Is there a fuse under the dash that I need to change?
