P1670
Thread Starter
|
More Turbo
Joined: Mar 2003
Posts: 578
Likes: 1
From: Green Bay Wi
P1670
Ok I keep getting a P1670 on my truck. Can someone tell me if I am out in left field but isn't that a IDM issue/code???
PS it also had a P1247 turbo boost low. I would think that would be in line with IDM as well would it not???
PS it also had a P1247 turbo boost low. I would think that would be in line with IDM as well would it not???
Thread Starter
|
More Turbo
Joined: Mar 2003
Posts: 578
Likes: 1
From: Green Bay Wi
First start of the day it is weak until fully hot. First 5 min of running I can floor it and has a hard time making RPM to cross the road/intersection. Waiting to get T-boned. Feels like it is running on 6 all the time now. As well as my OBD II bluetooth does not seam to link up with ECM. But my old superchips reader works. 
ICP good(rebuilt it), CPS good(replaced), injectors replaced (with a full set)and seals/o-rings UVCH replaced both sides.
ICP good(rebuilt it), CPS good(replaced), injectors replaced (with a full set)and seals/o-rings UVCH replaced both sides.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Injectors replaced with new or rebuilt? Who rebuilt if applicable?
A true communication fault between the IDM and PCM is likely to lead to more significant problems than you're describing. I've seen that code pop up numerous times for no reason at all.
Can you buzz test the cold injectors? Can you read perdel % (cylinder contribution) Have you watched oil discharge with the valve covers off?
A true communication fault between the IDM and PCM is likely to lead to more significant problems than you're describing. I've seen that code pop up numerous times for no reason at all.
Can you buzz test the cold injectors? Can you read perdel % (cylinder contribution) Have you watched oil discharge with the valve covers off?
Thread Starter
|
More Turbo
Joined: Mar 2003
Posts: 578
Likes: 1
From: Green Bay Wi
Sounds more like this one https://www.youtube.com/watch?v=pKWn7pw_hI4Injectors replaced with new or rebuilt? Who rebuilt if applicable?
A true communication fault between the IDM and PCM is likely to lead to more significant problems than you're describing. I've seen that code pop up numerous times for no reason at all.
Can you buzz test the cold injectors? Can you read perdel % (cylinder contribution) Have you watched oil discharge with the valve covers off?
I had another set of injectors from a runner I had bought a while back. Swapped them out.
I did buzz test them and all sound good Contribution test indicated #8 replaced with NEW Ford injector no change. I had watched them discharge a bit on a few some did not.
It also surges a bit on first start up. Then settles out normal like. Like this video
A true communication fault between the IDM and PCM is likely to lead to more significant problems than you're describing. I've seen that code pop up numerous times for no reason at all.
Can you buzz test the cold injectors? Can you read perdel % (cylinder contribution) Have you watched oil discharge with the valve covers off?
I had another set of injectors from a runner I had bought a while back. Swapped them out.
I did buzz test them and all sound good Contribution test indicated #8 replaced with NEW Ford injector no change. I had watched them discharge a bit on a few some did not.
It also surges a bit on first start up. Then settles out normal like. Like this video
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
That video doesn't have surge, it has misfires where injectors are not firing. If you've got injectors not spitting oil when cold, then they're not firing either.
The OBS trucks had more IDM issues due to the location of the IDM and being susceptible to water infiltration.
I'd start with the injectors not spitting oil. The cheap test is to swap those injectors with the ones next to them that are spitting oil. See if the non working injectors stick with the same injector (bad injector) or stay in the same cylinder (bad wiring or IDM issues)
An even cheaper test is to plug the truck in overnight first. If the cold starts get better than points to worn injector issues.
The OBS trucks had more IDM issues due to the location of the IDM and being susceptible to water infiltration.
I'd start with the injectors not spitting oil. The cheap test is to swap those injectors with the ones next to them that are spitting oil. See if the non working injectors stick with the same injector (bad injector) or stay in the same cylinder (bad wiring or IDM issues)
An even cheaper test is to plug the truck in overnight first. If the cold starts get better than points to worn injector issues.
Thread Starter
|
More Turbo
Joined: Mar 2003
Posts: 578
Likes: 1
From: Green Bay Wi
Trending Topics
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
That sounds more like the romps. What are the temps? Some folks up in the salt belt run synthetic oil to fix that issue.
But if you've really got injectors not spitting oil at cold start, you need to address that issue.
But if you've really got injectors not spitting oil at cold start, you need to address that issue.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
dlragalie
1999 - 2003 7.3L Power Stroke Diesel
9
Mar 7, 2017 08:38 PM
7threeaz
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
10
Aug 14, 2016 10:25 PM
WH90
1999 - 2003 7.3L Power Stroke Diesel
12
Feb 8, 2009 05:22 PM