When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Having a long crank issue with my 2000 Excursion. Hot or cold it tends to crank the same amount of time. Recently replaced the glow plugs, starter, batteries, and icp sensor. Turns over very fast and the glow plugs are fomoco. Runs great, no codes, no smoke. Leaning towards IPR but don’t want to throw parts at it. What should I look for on Forscan if it is the IPR? Just pulled the IPR solenoid and cleaned a bit of gunk off it and made sure the nut was snug.
For some reason Forscan was losing connection when I turned the key over to start but I was able to record it a couple times. This was a "shorter" crank but still longer than a usually hot start in my other trucks. IPR opens right up? ICP appears to build slow???
Truck runs great, last time I really used it was on a 1250mi trip towing a decent sized trailer.
ICP is taking time to start building. It builds fast once it starts climbing, but takes almost 2 seconds of cranking before it does. Commanded IPR% going much higher than typical for a hot start. The IPR valve may not be responding right away to the command, and could be slow/sticky - needing a cleaning/reseal.
Is the HPOP reservoir near full before your next slow start?
ICP is taking time to start building. It builds fast once it starts climbing, but takes almost 2 seconds of cranking before it does. Commanded IPR% going much higher than typical for a hot start. The IPR valve may not be responding right away to the command, and could be slow/sticky - needing a cleaning/reseal.
Is the HPOP reservoir near full before your next slow start?
HPOP oil level is good. If I start it with 10 seconds it starts fast, any longer than 30 seconds produces a long crank of 3-4 second.
I'd start with cleaning the IPR like the videos show and see whether things look like inside. You can also check the resistance across the coil, it should be around 10.5 ohms.
HPOP oil level is good. If I start it with 10 seconds it starts fast, any longer than 30 seconds produces a long crank of 3-4 second.
3-4 seconds is Considered to be a Long Crank?
my 7.3 has never, ever, started that fast. It might be that short when hot, just stopped at the gas station.... ??
but when sitting for days, 2 or 3 weeks, it takes much longer than that.
Never clocked the time, it just always starts and idles smooth as it should be.
I have 5w40 pure synthetic oil in it.... solved the cold Wx starting issue.
15w40 in 20* Wx was horrible, it would not idle/run smooth for a long time, until the EOT got up over ~60*F
If the truck is driven daily, then yes 3-4 seconds is a long crank. On a direct injected electronically controlled engine with properly working glow plugs it should start within 1-1.5 seconds. If the plugs are hot and compression is good the only thing the PCM is waiting on is 500# ICP to fire injectors. If the hpo system is primed and sealed like it should be then the pump should hit 500 in 3-4 revolutions easy. Now if it's setting for weeks at a time I wouldn't expect that. It would be asking a lot for everything to stay 100% primed and ready for that amount of time.
my 7.3 has never, ever, started that fast. It might be that short when hot, just stopped at the gas station.... ??
but when sitting for days, 2 or 3 weeks, it takes much longer than that.
Never clocked the time, it just always starts and idles smooth as it should be.
I have 5w40 pure synthetic oil in it.... solved the cold Wx starting issue.
15w40 in 20* Wx was horrible, it would not idle/run smooth for a long time, until the EOT got up over ~60*F
It takes much longer than my other trucks to start. Even when hot it takes 3x longer than it should.
Have never ran 5w40 in any of my trucks. Even in Michigan it never gives me any issues.
not the same engine,
but our '99 Dodge Cummins, fires up immediately, no matter how long it has sat....
the first time I started it, it had been unused for 2 years, batteries dead.
when I got them charged up enough to whirl the starter, it fired up in about 2 seconds.
it has new batteries now, and since I moved all of my sister's stuff to my home, it now has a Battery Tender on it.
another little diesel that I just love, is her little Kubota RTV X1100C SxS with AC in the cab.... I am using it daily to water our trees.
that things fires up in about 1 second
you can see her '99 1 ton behing the SxS, it is still hooked up to her stock trailer, which is full of her household stuff...
I'd start with cleaning the IPR like the videos show and see whether things look like inside. You can also check the resistance across the coil, it should be around 10.5 ohms.
I'll get a rebuild kit on the way and see if that helps anything.
I'll get a rebuild kit on the way and see if that helps anything.
The rebuild kit is just a new tin nut and a couple of o-rings. It doesn't actually rebuild or for that matter even clean anything. Calling it a reseal kit is probably more accurate.
Yup. Just started mine up today for the first time in 4 weeks. Didn't time it but it was within a half second or less from turning the key.
This month we'll probably start to see a lot of long crank/white smoke threads thru November. Once morning temps are down to about 55⁰ and glow plugs begin to earn their keep people find out their relays, glow plugs, batteries, starters aren't up to winter readiness levels. Sometimes 55⁰ will be all the summer fuel can do to light without the aid of glow plugs. Gas stations North of us probably won't have winter fuel blends in this early
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.
