UCSLugRacerX
15+ Year Contributor
- 166
- 0
- Jun 9, 2004
-
Santa Cruz,
California
My 1G AWD has been having problems starting lately and I THINK I've checked everything there is, but it's still having trouble starting-up at times.
At first I my fuel pump broke, and I replaced that with an OEM unit. Then it worked fine for a while, but then started having trouble again. I checked the Fuel control relay (under the center console), and tested that, and it works fine. My ignition is sparking at all 4 plug wires and my plugs are brand new. I checked my fuel pressure regulator, and that's fine.
I havn't touched my timing at all, so I don't think it could be that.
I did install a stereo deck recently and the red-wires going to the ignition circuitry could be doing something odd. Although I've disconnected it and it's still the same symptom. (And yes, I disconnected the negative lead before the install to prevent short circuit.)
I checked my ignition fuse (as well as EVERY fuse in the car) and everything turned out fine.
In anycase, I am stumped and every so often it will not start. Although after I remove and then replace the ignition fuse in the engine bay, SOMETIMES it will start up right
away.
I know this is very much a newbie-ish question, and I'm sorry if a question similar has been asked before.
HELP!
------------
Next day: Now my car won't start at all! Okay, I thought my fuel filter might be clogged, so I changed that. Still no positive change. I installed new plug wires, and still no positive change. I checked did the Fuel Control Relay test again VERY carefully, and the relay was fine. Then I pulled out my ECU, and there was a leaking capacitor right in the middle of the board. Although it looks like it might be flux, but I'm not sure. Anyhow, should I get a new ECU, or try to solder in new capacitors, or is it something else? I've looked at the Haynes manual already about troubleshooting this problem, and I've mos if not all. I've gone back to the basics again and again: spark, fuel, timing. And I'm pretty sure I have all 3.
HELP!
At first I my fuel pump broke, and I replaced that with an OEM unit. Then it worked fine for a while, but then started having trouble again. I checked the Fuel control relay (under the center console), and tested that, and it works fine. My ignition is sparking at all 4 plug wires and my plugs are brand new. I checked my fuel pressure regulator, and that's fine.
I havn't touched my timing at all, so I don't think it could be that.
I did install a stereo deck recently and the red-wires going to the ignition circuitry could be doing something odd. Although I've disconnected it and it's still the same symptom. (And yes, I disconnected the negative lead before the install to prevent short circuit.)
I checked my ignition fuse (as well as EVERY fuse in the car) and everything turned out fine.
In anycase, I am stumped and every so often it will not start. Although after I remove and then replace the ignition fuse in the engine bay, SOMETIMES it will start up right
away.
I know this is very much a newbie-ish question, and I'm sorry if a question similar has been asked before.
HELP!
------------
Next day: Now my car won't start at all! Okay, I thought my fuel filter might be clogged, so I changed that. Still no positive change. I installed new plug wires, and still no positive change. I checked did the Fuel Control Relay test again VERY carefully, and the relay was fine. Then I pulled out my ECU, and there was a leaking capacitor right in the middle of the board. Although it looks like it might be flux, but I'm not sure. Anyhow, should I get a new ECU, or try to solder in new capacitors, or is it something else? I've looked at the Haynes manual already about troubleshooting this problem, and I've mos if not all. I've gone back to the basics again and again: spark, fuel, timing. And I'm pretty sure I have all 3.
HELP!
)I bought a new 90 GSX ECM, and I am replacing the 3 stock capacitors with aftermarket Digi-Key Panasonic capacitors, with a 2 63V ratings, and 1 35V ratings. (The higher rated caps, hold higher surge limits.)
