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Old Dec 6, 2007 | 04:13 PM
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Exclamation Tacho Installation.

I want to put a RPM gauge over the dash panel. Anyone done this who has EDIS 96 onwards-3L or 4L engines. I just got a gauge but it says "not recomended" for DIS systems!

I dont want to risk it if there could be problems.
Also if anyone has done this where did you feed the ignition signal from?
ATB Aeroman.
 

Last edited by Aeroman59; Dec 6, 2007 at 05:03 PM.
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Old Dec 6, 2007 | 04:53 PM
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Post EDIS on 03-F150

O.K, so I've done some research. Pin #48 on the PCM connector seems to be the one to tap into. Can anyone verify this, i.e. do our later vans have the same PCM circuit?
Also is anyone sure where is the PCM connector located?
Coincidently I have the exact same Tacho, cant believe that!

One more qeustion....... anyone know the start of the redline on the Vulcan engine?........ not that it's ever going to get there!!!
https://www.ford-trucks.com/forums/6...r+Installation
 

Last edited by Aeroman59; Dec 6, 2007 at 05:10 PM.
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Old Dec 6, 2007 | 06:56 PM
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On the 4.0L there is a single tan and wire pigtail located near the spout connector. It is almost directly above the power steering pump. You can connect a tach to it, and it works great. Thats where mine is hooked up.

For the 3.0L I would suspect a similar setup. The neat thing about this pigtail is no splicing is required, the pigtail is meant for a diagnostic tachometer.
 
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Old Dec 6, 2007 | 07:15 PM
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Originally Posted by Aeroman59
One more qeustion....... anyone know the start of the redline on the Vulcan engine?........ not that it's ever going to get there!!!
I believe it is around 5500rpm, but on the ATX it would not go much past that do the the PCM limiter.
 
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Old Dec 6, 2007 | 09:12 PM
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on the 4L Cologne, 4900 rpm but the PCM in most cut off random injectors in the OHV engine starting around 4600. the PCM injector cutoff can be programmed off.

no need to turn it that hard though. these engines makes gobs of torque prior to 3,500 rpm. hp only makes top end speed and i know no one that's going to take an Aero to 150 mph

edited: except pablo-ua

research the web site of the tach manufacturer for tech support phone number and EDIS connection info. there are some tachs not designed to process the input from a PCM EDIS system.

http://www.sunpro.com/faq_detail.php?pid=16325&id=30
 

Last edited by 96_4wdr; Dec 6, 2007 at 09:45 PM.
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Old Dec 6, 2007 | 11:16 PM
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Originally Posted by Aeroman59
One more qeustion....... anyone know the start of the redline on the Vulcan engine?........ not that it's ever going to get there!!!
Mine will hit mid 5000s easily on a freeway ramp WOT in first gear. I recall seeing it hit 5700 a few times. But I wouldn't worry, it can take it. Go there. It's fun!
 
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Old Dec 7, 2007 | 02:25 AM
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Originally Posted by 93nighthawk
I believe it is around 5500rpm, but on the ATX it would not go much past that do the the PCM limiter.
i've gotten mine up to about 5400 rpms but backed off cuz gas mileage goes down the drain and i didn't wanna mess something up. i have a tach... although i also have a dizzy
 
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Old Dec 7, 2007 | 02:26 AM
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Originally Posted by TallPaul
Mine will hit mid 5000s easily on a freeway ramp WOT in first gear. I recall seeing it hit 5700 a few times. But I wouldn't worry, it can take it. Go there. It's fun!
i like the noise it makes w my "short ram" intake and highflow exhaust... great sounding GROWL! lol
 
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Old Dec 7, 2007 | 02:29 AM
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Originally Posted by 96_4wdr
no need to turn it that hard though. these engines makes gobs of torque prior to 3,500 rpm. hp only makes top end speed and i know no one that's going to take an Aero to 150 mph

edited: except pablo-ua
I would love to take my aero to the drag strip IF: it was lowered a lil bit (only just tho!) if i didn't get worried about a shimmy around mid 70's, if i had a five or six speed, and if the suspension was more stiff
 
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Old Dec 7, 2007 | 10:56 AM
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I have air rides on mine, and I don't get a shimmy at any speed. However, the Aerostar will not go more than about 90-95 mph. Mine acts like it is capable of going a lot faster, but the ECM puts a limiter at that speed.
 
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Old Dec 7, 2007 | 12:23 PM
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Originally Posted by DCRB
i like the noise it makes w my "short ram" intake and highflow exhaust... great sounding GROWL! lol
Yep. Sounds great with my Dynomax turbo muffler and I removed airhorn from airbox and cut a second equally large opening in airbox. That alone made it sound pretty good.
 
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Old Dec 7, 2007 | 12:26 PM
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Originally Posted by 96_4wdr
no need to turn it that hard though. these engines makes gobs of torque prior to 3,500 rpm. hp only makes top end speed and i know no one that's going to take an Aero to 150 mph.
I'd love to see the torque graph. Torque peak is around 3600. HP peak around 4800. Generally your best accel is between those two numbers pushing more to the HP peak end. That's not to say there isn't good torque below that but the extra HP helps. I also suspect that below about 2000 torque is not very good or these would be better off the line.
 
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Old Dec 7, 2007 | 02:24 PM
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the later engines have peaks in torque and hp at lower rpms due to improvements in PCM software, fuel injection and intake design.
3L: 147hp@5000 162lb/ft@3250

4L: 160hp@4000 225lb/ft@2500

my comments were about the 4L which has a torque curve that more closely fits the requirements to launch a heavy vehicle like the Aero especially the AWD Ext.

hp doesn't come into effect on launch unless one is running a super high stall torque converter, above 3k rpm or a manual transmission that will take 5k rpm launches
 
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Old Dec 7, 2007 | 03:14 PM
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I see. A broader power band on the 3.0. But I really like the 4.0. It's a nice torquey engine at the lower end. Good power band location. I probably would not rev the 4.0 as much as the 3.0.

What about the 4.2 that was in F150s after 1996? I always wondered why they didn't just use the 4.0. Is the 4.2 better? Or is it the modular?
 
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Old Dec 9, 2007 | 06:25 PM
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Question SPOUT with EDIS

Originally Posted by Bear River
On the 4.0L there is a single tan and wire pigtail located near the spout connector. It is almost directly above the power steering pump. You can connect a tach to it, and it works great. Thats where mine is hooked up.

For the 3.0L I would suspect a similar setup. The neat thing about this pigtail is no splicing is required, the pigtail is meant for a diagnostic tachometer.
So if I have EDIS is there still a SPOUT connector ?

I do see a Tan/yellow pigtail with a grey squarish single wire connector , immediatly left of the brake master cyl reservoir just below the lower edge of the hood, coming off the main harness could that be it ? It is roughly perpendicular to the P.S. pump (probably 20" above it though).

Where did you mount your gauge ? I'm thinking on the left of the dash & above it.

ATB Aeroman.
 

Last edited by Aeroman59; Dec 9, 2007 at 06:28 PM.
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