6 replies to this topic

[asmoto05]

I have a buddy who has performed a full 3l swap. He replaced the engine harness and the injector harness. He had to replace the brake booster had a issue with the brake light and clutch safety switch, but he straightened that out. I have had him double check grounds, general connections, checked the fuel pump switch. He is gonna check the fuel pump for power.

When he turns the key he has power with the check engine light on. But you can not hear the fuel pump prime. I have been throwing out ideas at him. Would help but he is like five states away. Any help would be appreciated.

[BuckeyeSVT]

Well, depends on the engine harness then. If the PATS is tripped by the harness being incorrect - That can do weird things. How long was the car sitting before the engine swap was done? These pumps have a nasty habit once they have mundo miles on them of failing. Check for the prime signal to the pump at the pump body (test for positive voltage for 1-2 seconds at key on).

-Dom

[asmoto05]

I believe he said she was down almost six months. I asked about the harness. He claims it's a 98 using an e1 harness that part had me stumped. He has the orange injectors and build number 4888.

[BuckeyeSVT]

It ran before the harness was replaced, but never fired after?

-Dom

[asmoto05]

Yeah she ran before his engine pull. I believe he pulled her to refresh her. Swapped harness and now no fire. Again I think he installed the wrong one and he trashed original.

[Rocco De Luca]

I am in a similar spot. 98 contour se 2.5. Long story short, it took me almost a damn year to replace my engine due to vast distance and limited time. The "new" motor is from an 01 cougar. I took great care to swap sensors from the old motor to the replacement (except O2. Easy to replace) With the exception of a couple O2 sensors and a 3 prong triangle shaped harness coming off the transmission, everything appears to be plugged in. Everything that snaps in is snapped in, everything that bolts down is good and tight (electrically speaking) It cranks and I am getting spark but, oddly enough, I'm not hearing my primer switch and for some odd reason, my horn stopped working. Checked all fuses, none blown. Checked the relays in the PD Box by switching them with the headlights and all 4 relays will turn on the headlights (R7 through R10 I believe) But nothing works in the horn spot, nothing works in the fuel pump spot. I unbolted the PD box and the ground wires coming from the plate on the neg batt cable are grounded and the other ground wire from that plate disappears into the loom. I see no corrosion or broken connections at the battery tray. On the passenger side, I see two ground wires bolted into the fender by the strut tower next to the P/S reservoir. I remember unscrewing that bolt to remove those wires with the engine and well, obviously I reconnected 2 of them. I don't remember if there was more than two. I get a service engine light. My dash LED above the radio behaves as usual. The car is equipped with an after market keyless entry/alarm by Audiovox but that has never played in as an issue before and I did not install it. I bought this car from carmax (10 yrs ago) and the alarm was already in it. Just to repeat, the car started and ran on 4 out of 6 cylinders with the old blown motor BEFORE we replaced the motor. I tried my damndest to make sure everything would bolt on to the harness that came with the car so the harness IS the original harness that came with the car. I have been at this between two jobs for about a month now and I can't figure it out. Too broke to send it to a shop. The only thing I haven't tested is the connections at the pump. I don't know which wire goes to what and I don't know the specs for voltages or impedences, ergo I don't know what to look for or what to expect under the rear end, so I haven't tried it yet. Before I condemn my alarm I need an education on testing my fuel pump.

P.S. I did beat the shiz out of my inertia switch (fuel cut off) and it popped. I reset it and still nothing.

[Rocco De Luca]

Added note, I have not used a NOID light on my injectors, nor have I tested for fuel pressure as I feel these tests are pointless until I can get my fuel pump energized. Finally, I have read in other forums about a 175 amp "megafuse" used on the 2.0L. I wonder if A). the 2.5L has this fuse and . Could this be my problem. ( I don't recall seeing any "megafuses" when I replaced the motor.)