Question about 1998 Chevrolet Cavalier

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1998 chevy cav. Fuel pump is not pumping. Put in a new pump and relay and fuse. Is they a typical spot that wires short on this car?

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Replace the engines oil pressure sending unit for the switch primes the pump with its circuit upon starting the engine

Posted on Jul 17, 2010

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1 Answer

2013 honda fury fuel relay fuse keeps blowing put new one n an turn key on it blows ????? Why?


the relay is only a current buffering device, ( a poor mans transistor i call it)
if the pump or it's wires are shorted, the relay can melt.
the first test is pump voltage
if the volts is like 6v (low) cranking we pump check current.
5 amps is typical for these small cars.
15 amps is bad.
if confused get a automotive electrics/electronics tech to fix it.
He has a nice meter to find this fast.
here is one.
(3 types )

http://www.fixkick.com/tools/inductive1.jpg

the best tool is the AMP CLAMP (DC amperes)
i put it on the line and check pump current.
the pump is fuel cooled and fuel lubricated,never run the tank dry.
nor run the car (pump) with filter clogged, it overloads the pump.


Jul 03, 2014 | Cars & Trucks

1 Answer

Put in new fuel pump,fuses are OK,new fuel pump relay and still no power to the fuel pump


Get a test light and test the wires going to it ground one end and see if you have power at the pump. If not do the same at the fuses so where you are not geting the power.

Aug 19, 2012 | 1998 Pontiac Grand Prix

1 Answer

I need a wiring diagram for a 1998 Chevy Blazer fuel pump


The fuel pump assembly consists of fuel pump relay,fuel sensor,the fuel pump controlling fuse,its ECM B fuse. The fuel pump and oil pressure switch. ----------- For its wiring diagram, click the link below and refer the diagram:--- http://technoanswers.blogspot.com/2011/10/fuel-pump-wiring-diagram-for-1998-chevy.html ----------- This should help.Thanks.Helpmech.

Oct 06, 2011 | 1998 Chevrolet Blazer

1 Answer

The car wil not start it blows the fuel pump fuse put in a new fuelpnmp does same thing could be relay dont know where it is


Sounds like the fuel pump hot wire is ground out causing a short to ground.Trace wiring harness back and check for bare spot or a wire that is smashed against a sharp edge of metal.

Apr 20, 2011 | Ford Mustang Cars & Trucks

1 Answer

I need the fuel system diagram for a 1998 Chevy Tahoe w/ 5.7L gasoline engine


Dark green provides power to fuel pump relay from the ECU. Orange wire at fuel pump relay is power at all time and is provide from the ECM/Bat Fuse at fuse block (Left side of dash). It also connects to the fuel pump oil pressure switch. The grey wire at relay provides power to the fuel pump and fuel pum oil pressure switch. The red plug thats tape to harness from relay/fuse center is the prime connector..

Jun 11, 2010 | 1998 Chevrolet Tahoe

1 Answer

Will not start and checked fuel pump no power to fuel pump i also have blown fuse for ecmb that blows as soon as i replace it


ECM B fuse supplies a constant 12v hot at all times to the VCM/PCM and to the fuel pump relay. The fuse is blowing telling you that there is a short to ground somewhere. Try this, take the fuel pump relay out and put a new fuse in. If it doesn't blow put the relay back in and if it blows then try a new relay. The relay may be shorted to ground internaly. Other wise you'll have to trace the wires to the VCM and the pump relay to look for a chafed wire that's contacting metal. The wire coming from the ECM B fuse is orange and has a splice in it going to the pump relay and the VCM/PCM.
Hope this helps.....Andrew

Mar 28, 2010 | 1999 Chevrolet S-10 Pickup

1 Answer

I have a short in the wires for the fuel pump keeps blowing fuses when you move wires connected to the relay just put in a new fuel pump thinking that was the problem. where can i get a wiring diagram to...


The problem may actually be in the fuel pump relay itself. The windings of the relay which create an electromagnetic field when energized, may be shorted and/or creating a high current draw, thus blowing the fuel pump fuse repeatedly.

I hope this helps! :)

Nov 13, 2009 | 1992 Buick Century

1 Answer

1998 chevy astro van ecm II fuse(20amp)burn out continually


The first thing you should do is to locate the oil pressure switch/sending unit.


This switch serves two functions.

1) provide oil pressure reading

2) disable the fuel pump relay in event of oil pressure loss.

===

When this switch is failing to provide the correct pressure to the ECU. The wiring harness can overheat and eventually create a short.

ECM2 fuse blow is because the harness is grounding/shorting.

===

DO NOT drive the truck until you change the oil pressure switch.

After you change the switch,you should spend sometime to inspect the wiring between the fuel pump relay,ECU and fuel pump.


Please post up day on the comment window/page.

I will follow up on it later.


Good luck.

Jun 01, 2009 | 1998 Chevrolet Astro

2 Answers

2005 Chevy express Fuel pump relay meltdown 6.0L


i need diagram for fuse box 1998 chevy van

Dec 12, 2008 | 2001 Chevrolet Express

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