Question about 1998 Chevrolet Camaro

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98 z28 air pump relay code comes up, replaced relay fuse, still blows fuse and chck eng lite still on

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You need to have it hooked up to a computer and checked. and the brain needs reset. then the check engine light will go off. as for the air relay thats probably a naked ground wire touching somewhere in the motor. you need to find it and check. if not your air pump and breather needs to be changed.

Posted on Oct 29, 2009

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How do I fix - P0411 Secondary Air Injection System Incorrect Flow Detected on 98 v6 mustang


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Code 410


code po410 on a 2004 gmc envoy is that there is a problem with the secondary air injection system, you will need to check the fuse located in the engine compartment first, the next step is to start the truck cold and listen for the air pump to turn on for a few seconds, this will sound like a jet engine but not that loud, after it runs for 5 min and you dont hear it then you may have a bad pump which is located under the driverside on frame but if you hear the pump then you may have a bad valve, this valve is located on the exhaust manifold area and has a hose from the pump to valve, remove the hose and check for water, drain any water in the hose, also remove hose at pump and drain, the most common cause for this code is the valve is not opening and the air pump gets water inside and goes bad, thats the po410 code. a quick note; if fuse is blown look under truck near pump and check relay as it fills with water and blows fuse, if this is the case replace relay and blow water out of connector.good day.

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Where is the fan relay located on a 98 Chevrolet camaro?


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Nov 18, 2011 | 1998 Chevrolet Camaro

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Where is the fuel pump reset switch on my 98 dodge ram 1500 sport?


There is likely a fuse and a relay. The relay is usually under the hood in a black plastic box along with other relays. The fuse is usually near by. Look under the lid of the box as the components are labeled there. Use a test lamp that says computer safe to check the power at the fuse when an assistant turns the key on. The light should come on for a few seconds and then turn off. You may have a failed fuel pump that is causing the fuse to blow. IF replacement of the fuel pump is nessecary, the cargo box will have to be removed (easier than removing fuel tank). ONLY replace with a complete fuel pump module as pump only replacements have a high failure rate. I know, I had to replace twice before getting the complete unit.

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1 Answer

My car is losing power, and the fuel pump wont come on. it wont turn over. i replaced the ignition lock. what else could it be besides the alternator or my starter?


you are too vague in your questions, and I need answers in order to help you. . is the car totally dead? is the battery good? do the headlights work? what hapens when you turn the key on. the lights on the dash should light up, the ck engine light should lite up. you should hear the fuel pump come on for 2 seconds and then shut off. if the ck eng light does not come on, ck all fuses and the ecm relay. if you dont here the fuel pump come on, ck all fuses and the fuel pump inertia switch. you need to start somewhere. dont replace any parts until testing reveals them bad, or your going to spend a lot of money on parts you dont need. if you dont know how to test, fiind a good shop to take your car to. it will cost less than guessing and replacing parts.

Sep 21, 2009 | 1992 Mercury Sable

2 Answers

2004 trailblazer,with po410 code.replaced purge valve , gas cap , vent valve on gas tank . can here air pump come on start up , but seems to have a higher pitch than before problem with code started . I...


p0410 secondary air injection valve malfunction..
Just know that diagnosing this is time consuming since the "system" is only active for a few seconds on cold start.

for now:
1.) wait for your car to be "cold" or 4 hours. Disconnect the hose from check valve (located passenger side--the transmission dip stick is attached to the bolts that hold it to the block). Start the truck, you should hear a nasty sound for about 30 seconds to a minute. If you don't its your check valve.
1a.) If it is your check valve, you can try to clean it. Get some throttle body cleaner, remove the check valve spray thouroughly (I did it a couple of times to get all the carbon and rust out) and let dry reinstall and follow above instructions. If no go replace check valve

2.) wait for your car to be "cold" or 4 hours. remove the fattest hose from the underside of air intake hose (I think thats where it is, I have a CAI so Its hard to know where it is exactly OEM) and from the check valve. Have someone else start the truck. Feel the hoses, you should feel sucking and blowing (I can't remember which is supposed to blow / ****) If you don't feel anything then its the pump (maybe -- read further)
2a.) check fuses there are about 3 in the manual listed for air pump (if bad fuse replace and retest, make sure to check the fuses after to make sure that the pump isnt blowing fuses) 
2b.) Locate the air pump its driver side mid car just behind the cross member for the frame. There are two wiring harnesess one that goes into the relay (grey box) and one that has two fat wires (thats the power plug for the pump.) disconnect that one, wait for cold start and start truck while having a multimeter attached set on DC mode. If you get a reading of 0 then replace the relay. if you get power 12-15 volts replace the motor. 
3.) If both the check valve and the pump are testing out ok it could be a clogged hose.

There are only 3 parts to this system, Check Valve ($125), Air Pump ($280) and Relay ($50). parts4chevys.com has it listed as a check valve. $128 list. Good luck and hope this helps

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1 Answer

99 toyota check eng.lt on code po300,po303,po305,po171,p0420


Hey Dan, It cannot hurt to change the Plugs and wires. Make sure and Check all the Fuses and Relays also. Sometimes the Realays can blow or just get old and send a Code also.

Jan 23, 2009 | 1999 Toyota Camry Solara

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