Hello ppl,
I have been having a slight problem with my car since Friday night. The car drove fine up until Friday night. I came home from work and parked around 6:00pm and blasted my system with the car running for like 10mins...Stayed in the house until 8pm and the car wouldn't start. Car cranks fine but won't turn over and start. I thought it was my alternator at first becuase before turning the car off I was blasting the subs system. I just assumed it without even thinking. Well after some research I find that it's the fuel pump. When I turn the key to the "on" position, you can't hear the fuel pump doing anything. The fuel pump fuse is fine. However, I can't find the fuel pump relay to check that out. I don't even know how to check that relay but likely the relay is fine and I just need to buy a new pump.

Anyways my 2nd question is which fuel pump to get and how much to pay. I went on Ebay just for kicks and I see a Walbro 255 fuel pump. I only have an intake. Is it wise to buy this now or is that better for the future when I have heavier mods? And is it any good anyway? Thanks guys. I know you can help.

 

i have never tried to find mine but according to the fsm for my 97, the fuel pump relay uses connector M5. M stands for "main wire harness." which is is inside the car under the dash. the manual isn't real clear but it looks like M5 is down low by the floor, behind the side kick panel. it is by connector M4 that connects to another harness, body #1, that runs through the rocker panels to the trunk.

what gets interesting is that the ECM tells the pump to run. when you turn the ignition switch on the ECM for on second (I think my car goes longer than one second) to pressurize the the fuel rails. after that one second, the ECS looks for a signal from the crankshaft position sensor that says the engine is running or the ECS shuts off the pump.

 

So what are the odds of this relay going bad? Is it more likely that the fuel pump just went bad?

 

Some people just don't read.

 

i think that its more likely that the relay would go bad before the fuel pump would.

i was able to save the chapter of the FSM that has wire diagrams and a diagnostic proceedure for the fuel pump to my computer hard drive. i could e-mail it to you if you let me know your e-mail address. The file is an Adobe PDf file and is 5 MB. Some e-mail services won't let you receive an e-mail that big. You give me an address and I'll try.

 

themajesticking@gmail.com

 

I can't find the fuel pump relay....where is it?

 

On 95 and later models, the fuel punp relay is behind the kick panel, on 93/94 it's in the rear of the vechile.

 

To check a relay. connect a ohmmeter across the two terminals of the circuit, continuty should not be indicated. Now connect a fuse jumper wire between one of the two control circuit termnails and the positive batery termnial. Connect another jumper wire between the other control circuit terminal and ground. When the connections are made, it should click and continuty should show on your meter.

BTW, if it don't click, try swaping sides of the jumpers, as +/- is needed on some relays. If it doesn't click either way, you need a fuel pump. Hope that helps.

 

Well. I replaced the fuel pump and got nowhere. This sucks. I'm out of ideas. Where are all the max.org veterans? The car was doing the same thing.(ke ke ke ke ke ke) Nothing......I sprayed a little more starter fluid in the intake and the car started but cut right back off. This time I went to start it back up and instead of the usual ke ke ke ke ke ke ke ke. It just says keeeeeeeeeeeeeeeee. Not good huh? Do I need a starter? I'm lost.

 

Sorry for not being a .org vet, but why did you pay for a fuel pump install with out checking what was wrong with it first. Exp if you took it somewhere anyway. I had a friend with a 3rd gen (94) was doing the same thing. It was a starter.

 

I didn't take the car anywhere. It's sitting outside of my house. I was trying to do as much diagnosis as I could do myself. I don't have a mechanic that can come to me. I put the pump in myself with the help of my friend.

Well. We tested the new pump with a multimeter the resistance came out to 7.2 instead of the .2 that the stock pump was coming up with. I can tell them this and see if they'll take it back. I doubt it but I will try anything at these point. At least I will be exchanging instead of a full refund.

 

Did you ever check the relay? If that is out, you can buy 100 new pumps, won't matter. Your pump shouldn't go out anyway unless you run trashy low grade gas, or run it on empty alot. I posted how to check the relay, but it still sounds like a starter. They should do an exchange on the pump, but try and see if its the relay or starter, so you can just get credit for the part twards a starter or relay, or whatever you find it to be.

 

My max seems to do something similar to this intermittently. Out of nowhere, when the car has been sitting for like an hour or so, it cranks for like 7 to 10 seconds before sputtering to life. This happens anywhere from once every month to 2 months. The fuel filter has been changed and I always use premium. Could this be the fuel filter, relay, or temp sensor? Sorry to butt in, but I didn't want this problem to embarass me at some point in time. Any ideas?

 

I switched the relay with another and got the same results. I only run high grade. I am going to exchange that new pump for another part that I actually need. Yeah. I'm really thinking that it's the starter now.

 

Thanks guys. There was no fuse in the fuel pump spot and the relay was bad. I must have been checking through the fuses and put it in the wrong spot. I don't think I ever needed a pump but at least it's out of the way.

 

Cool, so your again?

 

Beautiful color on your max!

Sounds like it could be your injectors, or plugs. When was the last time you had a major tune up? Meaning the cupple hundred dollar dealership tune up. That may be all you need, cuz they clean your injectors and everything on a major tune up.