i have a maza b2500 truck im having troble with the motor turns off when engine get warm it takes about 20 min to start it when this happens someone please help me. i have change head, timing belt,sparkplugs and wires. i dont know if fuel relay going out or not


Asked by Feb 25, 2015 at 01:29 AM about the 1999 Mazda B-Series B2500 SE Extended Cab RWD

Question type: Maintenance & Repair

15 Answers


when you start it when cold does it idle normally?

3 people found this helpful.


1 people found this helpful.

when you say turns off do you mean flat out turns off or slowly dies?


yes sir


turn off

1 people found this helpful.

i have to coast to side of the road but wait 10 mins or so it will start back up


ok fuel relay should be swap-able with another relay the same. that would be where i start first ( cheapest) second item would be fuel filter. have you tested your fuel pressure at your fuel rail?


no sir


how u test it


you need to own or borrow a fuel pressure tester. and there should be a little cap usually on the end of your fuel rail called a shraider valve and when you take the cap off it should almost look like a valve stem you put your fuel pressure tester on the end and turn your key on and asses the pressure and ensure its maintaining pressure i am attaching a link to help you out you want to see 56-72 psi or if you have a 3.0L flex fuel 55-75 and make sure it doesnt lose more then 5 psi https://www.youtube.com/watch?v=_oXLUqE4Sf0

2 people found this helpful.

im thinking either fuel relay or your pump is going out (overheating) how many miles on it and have you ever had a pump changed also try with a full tank of gas and see if it still does it as the pump uses the fuel to keep it cool. and do you get any service engine light on or security light and does your accessories stay on when it dies

2 people found this helpful.

to me it is showing signs of a bad pump it pushes the fuel on initial start up and runs the vehicle for a bit but then the pump overheats and quits and wont start again till it cools down. or the relay is heating up and doing sort of same thing. but a clogged fuel filter will also cause the pump to over pressurize and make it quit from working too hard.


thanks alot will try that thanks alot


If you have a b2600i I dont know of a shrader valve onthe fuel rail. However my best suggestion to you is to get a Haynes shop book and look under section 4 which is fuel and emissions and it tell you how to do it. If there is a harbor freight near you then you can pick up a tester fairly cheap. However, if you are not constantly working on cars i suggest renting one for a couple of hours. AutoZone, Oreiillys has a tool loan program. If where you live has none of these places, check with your local auto stores they may know where and how you can get a tester. The operable pressure should be no lower than 27 psi or no higher than 35 on a 90s b2600i.


Also. Your fuel pump relay is in the driver side kick panel. Remove it and start the truck its a yellow looking little box with a plug going to it. While the truck is idling touch it. Is it getting hot? If so replace it. Those are the only things i can suggest.

Your Answer:


Looking for a Used B-Series in your area?

CarGurus has 209 nationwide B-Series listings starting at $1,995.


Mazda B-Series Experts

  • #1
  • #2
  • #3
    Michael Tutty
View All

Related Models For Sale

Used Ford Ranger
105 Great Deals out of 4,236 listings starting at $1,750
Used Toyota Tacoma
436 Great Deals out of 49,776 listings starting at $2,400
Used Nissan Frontier
323 Great Deals out of 22,313 listings starting at $1,295
Used Ford F-150
2,319 Great Deals out of 189,659 listings starting at $1,300
Used Chevrolet S-10
4 Great Deals out of 857 listings starting at $2,988
Used Mazda MX-5 Miata
47 Great Deals out of 4,403 listings starting at $1,995
Used GMC Sierra 1500
807 Great Deals out of 60,793 listings starting at $1,500
Used Chevrolet Silverado 1500
1,765 Great Deals out of 155,976 listings starting at $1,700
Used Dodge Ram 1500
328 Great Deals out of 9,339 listings starting at $1,500
Used Dodge Dakota
88 Great Deals out of 3,033 listings starting at $700

Used Cars For Sale

2008 Mazda B-Series For Sale
6 listings starting at $3,795
2007 Mazda B-Series For Sale
8 listings starting at $3,400
2006 Mazda B-Series For Sale
11 listings starting at $3,995
2005 Mazda B-Series For Sale
11 listings starting at $2,199

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.