fuel pump fuse problem

l301$T3R · Post by **l301$T3R** » Sun Jul 22, 2007 12:55 pm

Hey guys, im having a fuel pump fuse problem. My car just recently has started to blow the 20a fuse for the fuel pump, ive tried a 25 and 30 fuse but it blows them too. some fuses can get me all around town and some only a few feet before they blow. does anyone know whats up? Ive checked my ground and they all look good, maybe the fuel pump is getting ready to blow? I have no idea, the wiring and fuse box, everything looks in good condition. If you gots some idea let me know. Its pissing me off. lol

6(sic)6 · Post by **6(sic)6** » Sun Jul 22, 2007 1:50 pm

You said you checked wiring around the box and your grounds but did you check for shorts? Check your O2 sensors, a hot wire may be grounding out....

infil · Post by **infil** » Sun Jul 22, 2007 3:20 pm

check o2 sensor wiring. also check the asd relay, if that is shorted internally it'll blow the 20a.

l301$T3R · Post by **l301$T3R** » Sun Jul 22, 2007 6:42 pm

i hooked my neon up to a computer and is was reading that the o2 senor was the reason for a check engine light, if i replaced the sensor will that fix it you think?

DOHCRT · Post by **DOHCRT** » Sun Jul 22, 2007 10:04 pm

It depends on what is wrong with the sensor. A good scan tool will tell you if the O2 is shorted, lazy, or has a bad heater circuit. You should inspect the wiring for the O2 sensor that is causing the CEL to come on.

charger440neon2.0l · Post by **charger440neon2.0l** » Sun Jul 22, 2007 11:02 pm

check to be sure your wireing for your o2 sensor isn't laying on your manifold or your rear o2 wiring didn't fall onto your passenger side cv shaft. I ran across one that had both issues and did all kinds of nasty stuff.

jrumann59 · Post by **jrumann59** » Sun Jul 22, 2007 11:16 pm

The downstream O2 sensor has a nasty habit of shorting out on the CV and blowing the fuel pump fuse though it looks like I may have found an answer to getting rid of the DS O2 altogether without using AF/X or a standalone.

l301$T3R · Post by **l301$T3R** » Mon Jul 23, 2007 7:11 pm

sweetness, thanks guys. My damn Neon repair book sucks.....thanks for the ideas

Red97 · Post by **Red97** » Thu Nov 15, 2007 11:08 am

I don't know if you have found the problem yet, but I had the same problem. I checked the wiring and found the alternator wiring shorted. It really fried a bunch of wires!! I repaired all the wires, and it works fine now.

NeonTuning · Post by **NeonTuning** » Thu Nov 15, 2007 11:14 am

hey I had some of these problems, and it was a broken fuel pump.

Do you by any chance have pictures of the wires you fixed??

Red97 · Post by **Red97** » Thu Nov 15, 2007 11:27 pm

No, I don't have pictures but green/orange wire at the alternator shorted out to the solid green wire at theplug to the alternator. It also fried ALL of the wires to the downstream O2 sensor. I hope this helps, Good Luck!!

AMM · Post by **AMM** » Thu Nov 22, 2007 2:45 pm

jrumann59 wrote:The downstream O2 sensor has a nasty habit of shorting out on the CV and blowing the fuel pump fuse though it looks like I may have found an answer to getting rid of the DS O2 altogether without using AF/X or a standalone.

this seems to be quite tur with alot of guys but when mine was shorting i removed the whol harness and then removed all te wire loom and taping from around the down stream o2 right before it went past the alternator and head back towards the sensor and found all four of the wires were exposed and the insulation had corroded away some how??? anyways i spiced in some new wire and all is good now. (or was it the alt wires???? owell i would check it all out)

AMM

wesker · Post by **wesker** » Thu Oct 09, 2008 1:41 pm

mine is doing the same damn thing,did a motor swap and now my fuses blow.wtf!!!

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