I am looking to get a new fuel pump for a 97 Chevrolet Blazer. After checking with a fuel gauge i found that I had to crank it until the pressure built up to 60, then it would start. With the starter in the "on" position it only read 15 psi.
2007-05-31 06:19:33 · 7 answers · asked by Brandy 2 in Cars & Transportation ➔ Car Makes ➔ Chevrolet
You are right to say the fuel pressure should stay at a higher value than 15 when the ignition is off. You have to ask yourself where the pressure is leaking though. If you have no external leaks as I assume you do not, there is only two places the pressure can dissipate. Inside the tank which would be a fuel pump or sender problem as you have surmised. The other leak can be from the CPI or regulator located under the upper intake plenum. I suspect that if you have no other problems that it is the fuel pump issue. If you are having long cranking periods with a lot of black smoke and a rich running motor, I would suspect the CPI or pressure regulator for it. These are both pretty pricey jobs so be sure which it is before proceeding. Generally speaking, if the fuel pressure builds quickly when turning the ignition to the on position and then just as quickly falls away, I would suspect the fuel injectors or regulator of leaking. Fuel pumps generally leak pressure away slowly. Good luck.
2007-05-31 07:19:27 · answer #1 · answered by Deano 7 · 0⤊ 0⤋
Yea, I'd look @ replacing the fuel filter, first. Then, see what kind of press you have on the regulator and how it starts.
Fuel pumps now days are located in the fuel tank and unless you run the Blazer out of gas it should be good.
Btw, never run the Blazer(or any other vehicle for that matter) out of fuel or you'll definitely need a new fuel pump. As the fuel in the tank is also, used to keep the pump cool. Otherwise it will burn up. Replacin the fuel requires down the fuel tank on these newer vehicles. Hints the hi expense for the repl.
Good luck!
2007-05-31 08:02:35 · answer #2 · answered by Don B 5 · 0⤊ 0⤋
First of all, do you have a 2-door or 4-door? That makes a difference. At Autozone.com, the part number is still the same, but the price is different, depending on whether or not it is a 2 or 4-door. The prices I saw on Autozone.com were $339.99 for a 2 door and $288.99 for a 4-door. Go figure. They both come with a complete fuel pump assembly and fuel strainer. Do you know how to drop the tank and install the pump yourself? If not, Autozone.com also has DIY instructions for people who want to save money. Replacing an in-tank fuel pump is expensive. Believe me, I know. I have a 1987 Chevy Celebrity with an in-tank pump, and it cost me almost $300, including the pump replacement and the labor. With your vehicle, which is more than likely larger than mine, it will cost you more. So, if you don't mind getting your hands dirty, check out Autozone.com. I trust that site implicitly.
Good luck!
2007-05-31 08:50:37 · answer #3 · answered by Anonymous · 1⤊ 0⤋
I dunno what the proper psi should be, but I am certain it is the fuel pump. It will always read low in the on position because there is really nothing being pumped through until the engine is running. When you go to start it, it should jump up higher and stay there, not slowly build up. I would also check to see if your fuel system (injectors, lines, filter) is not clogged with nasty gunk first.
2007-05-31 06:28:09 · answer #4 · answered by Chris L 3 · 0⤊ 0⤋
Check your filter first
And around 200 bucks for a quality pump, you can find them for 120 or so though...replacing it though...you have to drop the tank, and I havent seen how much if any rust you have, so 300-500 dollars.
2007-05-31 06:28:06 · answer #5 · answered by zebj25 6 · 0⤊ 0⤋
the fuel pump is located in the fuel tank cost about 300. dolars not easy to replace..
2007-05-31 06:29:31 · answer #6 · answered by Anonymous · 0⤊ 0⤋
For a 98 chevy S10 almost $400.00 Ouch!
I hope it will be cheaper for you!
2007-05-31 06:27:32 · answer #7 · answered by Anonymous · 0⤊ 0⤋