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@87crewdually I'm ohmmeter stupid. I have replaced #4 once already. With a New one Kyle sent yesterday. We did a Buzz test on all injectors after a scan to find 4&8 contribution , then cleared the code then did a buzz test and Buzz test showed fine. Took it for a test drive again and threw up 4&8 again..
As for calling Warren again for 2 more new ones. No. I never had this problem until I installed their injectors. I'm not happy with their product thus far. I'm to the point that I calling again tomorrow for a refund.
Why waste the time again of swapping around when I've replaced #4 once before with a New one yesterday and again threw up #4 and now #8.
I guess I'm kinda asking as well are these Warren Diesel Injection injectors junk like I believe or am I just getting to pissed to fast here.
I'm upset cause the truck was suppose to be fixed last week when I called Kyle for the first replacement #4 injector and he told me he'd get it to me asap because I had a snowmobile trip planned and paid for up north. Well he lied and sent it 3 day shipping and I had to rent a truck for 5 days, and extra $675 because it wasn't shipped fast enough. And I got back Monday night with the injector on the table. I installed it and sure as s#!t same thing.
In one of the links, a person suggests that there could be alignment problems with the oil rail nipple cups (after doing maintenance on them). Did you take them apart?
87crewdually. Normal operation temp my ICP reads 525-566. I'm going to order the new STC along with dummy plugs and standoffs just in case after read up on them just now.
Your ICP numbers are low by 20-60 psi. You need to air test and you will likely find the real issue without throwing more money at the truck blindly.
1. see if you can get two more injectors from Warren without any more investigative work
2. swap injectors around so that you have some more justification if Warren needs it
3. send them all back (if they will take them) and get 8 different ones
Just to confirm, can you get to 3500 psig + (hard acceleration)?
1. see if you can get two more injectors from Warren without any more investigative work
2. swap injectors around so that you have some more justification if Warren needs it
3. send them all back (if they will take them) and get 8 different ones
Just to confirm, can you get to 3500 psig + (hard acceleration)?
As much as I don't trust non-Motorcraft rebuilt injectors I really don't think they're the problem but to eliminate that thought I'd first do #2 on the above post. I look at it pretty unlikely to get 2 bum injectors in a row in those holes.
Ohm out the harness from the FICM plug diagram I posted earlier & record the readings on the whole bank (driver's side even cylinders).
To do so for example you would probe the FICM plug pins cylinder#4 open coil ground and open coil positive. Then test close coil ground and close coil positive. ex: PINS 1 & 23= ohms. PINS 6 & 24= ohms.
You have some solid experience in here providing you sound advice to help break down the diagnosis and mitigate the problems. As good as we all are, we have to go back to the basics and look at anything we touched to know that something was not missed or mis-aligned as we replaced and adjusted - everything is suspect until we have proven it out and some times it takes more than one attempt to find that validation.
If you have a manual selection OHMs meter, set it to 200 or 2k, then use the probes to touch the pins at FICM as 87 has described. This will test the coils on the injectors while sending a small voltage of electricity through the coil, the OHMs number coming back tells us that the coil is or is not a) connected and b) that the coil is functional through proper resistance.
Buzz test is great, BUT if the coil is damaged you might not pick up the difference in the sound - the OHMs meter will give you a number and we can figure out how close that number is or is not to being truly functional.
Set the manual dial once and test by touching the probe to the pins, give us the setting (200 or 2K) and the OHMs reading.
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