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I have a 2005 trailblazer with a bad surge problem I replace fuel pump and fuel relay and when the car surge the fuel light come on please help

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Have you replaced the fuel filter or maybe you just got some bad gas which does happen maybe water in it

Posted on Mar 24, 2014


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Posted on Jan 02, 2017


SOURCE: fuel pump relay location on a 1990 mercury grand marquis.

check the fuse .if the fuel pump was bad you blew the fuse . there is a inertia switch in the trunk or under the dash you could check . push the red button to reset relay should be under the hood in the fuse box check your book if you have one.

Posted on Nov 19, 2008

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SOURCE: fuel pump relay

first alway check the simple things first like fuses and relays then start playin with changin out parts. under the hood you sould find a fuse panel if the lid does not tell you what is what you need to look into the service manuel find the fuel pump relay and switch it with the same type relay can works some the doesn't effect the engine like a fan relay for expamle. then try to start engine when turning key to the run pos you sould hear a fant hum or whine from the pump. if thats a no go take the main fuel line off before the fuel filter and see if a good stream of fuel comes out when you turn key to run pos.if so replace fuel filter.

Posted on Oct 08, 2009

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SOURCE: Where is the fuel pump relay in the 2005 Nissan

This should help


Posted on Mar 14, 2011

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SOURCE: 1986 Accord - fuel pump relay problem - HELP!

relay is under dash on driver side behind cruise control box. You tube has a demonstration on there for 92 accord.

Posted on Mar 10, 2012

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SOURCE: fuse and relay diagram for 2005 dodge stratus

look on the inside of the cover you removed to access the relay center, it has all the relays labeled for there position

Posted on Jul 24, 2012

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did you change fuel filter.check fuel fuel a days new stuff doesn't always work.

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Could be the fuel pump or pump relay going bad.To check relay simply replace it with another.It also could be the crank sensor or cam sensor.

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What causes the engine to surge wile driving?

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Jan 02, 2013 | 2005 Chevrolet Monte Carlo

1 Answer

Would the fuel relay take q few times to go out ?

No. The fuel pump relay is either working or its not. A relay works like a surge protector. A fuel pump produces surges of electricity as it pumps; a relay (large fuse) can only handle so many surges for so long, and thus usually at the half or three quarter mark of the life of the engine, these will "go out".

If replacing this does not solve your issue, consider having a diagnostics test performed (if you can get it to a parts dealer). If not, you'll just have to replace parts that are cheap. Here's a way you'll tell if a relay is bad:

Get a fuse tester and pull the fuel pump relay. There will (should be) four metal prongs on the bottom. You can't tell witch two are the live and feed so take two at a time and touch them to the two prongs on the tester until the light on the tester comes on - if the light does not come on when any two prongs on the relay are touched together with the tester, the relay is spent.

Before anything, however, locate the pressure valve on your fuel rail. After letting the car sit for some time after being started or driven, unscrew the valve stem, and depress the needle inside - if fuel sprays, then you have pressure. This will tell you that the fuel pressure regulator is still good. If no, or very little fuel is dispursed, then replace the fuel pressure regulator first. Also, check your airfilter and make sure it is not plugged, or torn. If so, replace. If it is excessive with dirt and debris, replace.

Also, replace the fuel filter. If your air filter, fuel filter, pressure regulator, and pump relay are all in good repair, or replaced - and the car still does not start, try one or both of the following:

1. MAS - the mass airflow sensor - clean with MAS cleaner (auto parts dealer).

2. Coil Pack(s) - if equipped - can be tested (modular under these cannot, so look for melted, white, bubbly substance - if present replace - have packs tested and replace any that are bad, and only the ones that are bad unless you prefer to do all - these can be a bit spendy per pack (not sold as set if more than one for some cars);

3. test the alternator - if the car will start, (even if you have to jump start it) with engine running pull the battery terminals off (both) and if the car dies, alternator is bad - if it remains running, it's good.

Please let me know if you need further assistance; feel free to view my tips page for more information.


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May 30, 2010 | 1998 Buick LeSabre

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2005 chevy malibu won't start

You will need to Check the Fuel Pump and Relays, and also Change the Fuel Filter. There is a Fuse Relay Box under the Hood that has the Fuel Pump Relay in it.

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