 
     |
| No start/No idle issues (Page 1/1) |
|
Haggard01
|
AUG 15, 07:50 PM
|
|
Hi, so I've been working to restore my Fiero for a while. I've had it for about 20 years now but it was sitting for about 9 years now and I have had many wires chewed up by mice. I've finally gotten to the point where I can get it started with starting fluid but I have no idle. So far, I've changed out:
Pcv valve
Egr valve
Iac valve
Tps sensor
Spark plugs
Plug wires
02 sensor and connector
I've finally found where one of the negative wires was chewed through and repaired that. Today I finally found a cut pink wire coming out of the harness near where the o2 sensor connects to it. I have no idea where this wire is supposed to connect to.
I assumed it was the coolant temp sensor since it was in the general vicinity but I can't find any evidence of where its supposed to lead to.
|
|
|
|
82-T/A [At Work]
|
AUG 15, 08:00 PM
|
|
| quote | Originally posted by Haggard01:
Hi, so I've been working to restore my Fiero for a while. I've had it for about 20 years now but it was sitting for about 9 years now and I have had many wires chewed up by mice. I've finally gotten to the point where I can get it started with starting fluid but I have no idle. So far, I've changed out:
Pcv valve
Egr valve
Iac valve
Tps sensor
Spark plugs
Plug wires
02 sensor and connector
I've finally found where one of the negative wires was chewed through and repaired that. Today I finally found a cut pink wire coming out of the harness near where the o2 sensor connects to it. I have no idea where this wire is supposed to connect to.
I assumed it was the coolant temp sensor since it was in the general vicinity but I can't find any evidence of where its supposed to lead to. |
|
Hi, what year, and is it a V6 or a 4cyl?
|
|
|
Patrick
|
AUG 15, 08:49 PM
|
|
| quote | Originally posted by Haggard01:
...it was sitting for about 9 years ...I can get it started with starting fluid but I have no idle.
|
|
What (if anything) is the fuel pressure?
|
|
|
Vintage-Nut
|
AUG 15, 08:51 PM
|
|
I suggest a printed Factory Service Manual as it has all the wiring diagrams...
OR use this link:
Digital Fiero Factory Service Manuals
https://fieroinfo.com/manuals/
------------------
Original Owner of a Silver '88 GT
Under 'Production Refurbishment' @ 136k Miles
|
|
|
|
Haggard01
|
AUG 15, 10:31 PM
|
|
|
|
|
Haggard01
|
AUG 15, 10:42 PM
|
|
| quote | Originally posted by Patrick:
What (if anything) is the fuel pressure?
|
|
I haven't checked any of that yet. I've been wondering if I'm not getting any power to the fuel pump.
|
|
|
|
Vintage-Nut
|
AUG 15, 11:14 PM
|
|
| quote | | I've been wondering if I'm not getting any power to the fuel pump. |
|
Turn the key to RUN without pushing into START
You will hear the fuel pump prime IF you have power...
|
|
|
|
Patrick
|
AUG 15, 11:47 PM
|
|
| quote | Originally posted by Haggard01:
I've been wondering if I'm not getting any power to the fuel pump.
|
|
If you don't hear the fuel pump prime for two seconds when you turn the key to RUN... connect 12v from the cigarette lighter to the fuel pump terminal of the ALDL port. This bypasses the relay, and the pump will run if it hasn't seized. Even if it runs, there may still not be any fuel pressure if the short length of hose in the tank has ruptured/rotted.
 [This message has been edited by Patrick (edited 08-15-2025).]
|
|
|
