Fitting 35’s with minimal trimming NOW ADDING LONG TRAVEL AND 934 CV’s

Here's how I had mine mounted. Took minimal bracket modification.

 

Random question, does anyone have an OE power steering pressure switch they can measure the resistance of?

I'm running the Howe pump but as I understand it from many who have gone this direction, I'm having idling issues. The truck idles so low that the power steering gets heavy unless you give gas. I understand one way to resolve this is to tune the ECU to bring the idle speed up a bit but I'm kind of wanting to experiment with something. When the Howe pump is installed, you remove the pressure switch that helps regulate the engine idle, especially when at full lock. The pressure switch will regulate the voltage to the ECU according to the amount of pressure that the system is under. I went through the trouble of grounding the pressure switch wire to the engine block in hopes to help with engine idle with no resolve. I'm assuming it's because there's no resistance within the circuit so the ECU isn't adjusting idle speed.

I'm curious to know what the sensor's resistance range is. I'm thinking that if I add a resistor within this circuit I can trick the ECU to up the engine idle. Thoughts? Anyone want to contribute to this experiment?

 

QUOTE="Airdog, post: 28988170, member: 93790"]Cmon…show a little ingenuity and find a place for it. Cut it. Drill it, do whatever it takes to mount it. You can put it anywhere upfront. That’s what I did. You don’t need Harry for this!
[/QUOTE]

Thanks for the ideas! Time to break out the tape measure, skinny disc, and flapper wheel!

 

It's a ground side switch/circuit, attach the lead permanently to the frame. That tricks the PCM into thinking the pressure switch is "on". RPM's will always be at the raised or higher state at idle. Which would be ideal anyways when on the trail and going slow/crawling over small children and pets.

The sensor is just a spring and plunger/contactor inside the body, nothing to measure with a DMM

 

So I did ground the wire (to the block) but did not notice an increase in RPM. I feel like I'm missing something as the truck still idles incredibly low.

I'll confirm it's a good ground but I can't imagine it not being one.

 

For shits n giggles..try grounding to the frame instead of engine block. Maybe the block is isolated from a proper ground because of the rubber isolators within the motor mounts. But.. the starter ground wire should provide that proper ground to the block

 

It’s just a ground switch. Ground closes when pressure drops and opens when it rises. PCM detects the open and closure. Maybe you have a wiring issue or maybe even a pcm drive. Who knows.

 

Did you ground the correct wire? Like cut off the connector and route it to the block. Not the other ground wire that was bolted to the pump.

 

I assumed the engine would have a chassis ground at some place but it's worth a shot.

Can you elaborate on a PCM drive? A wiring issue isn't out of the question. This all came to light when I installed the Howe pump and the inner fenders.

I'm fairly confident I grounded the correct wire. I did cut off the connector but nothing is out of the question at this point.

 

If you cut off a plastic connector, you grounded the correct wire. If you cut off a ring/eye connector, then you grounded the wrong wire. That’s my understanding anyways.

Take all I say with a grain of salt though as I have not actually done this as I didn’t find it worth the effort.

 

So I just went out and checked. I did ground the correct wire. I actually ground both wires to the same location on the back of the pump. I measured voltage to confirm it was a good ground and that checks out.

Did your truck not idle low when you did the pump? It was kind of a PITA to get in there and ground the wire but was hoping it would fix my idle issue. Didn't happen.

 

Being a manual trans, I just did some footwork to raise the rpm’s when needed. But at standard idle the pump made basically no power as stated before.

 

I had the same thought after my SAS. Seemed like an easy way to get a higher idle without spending seven million dollars on tuning shit. Never got around to trying anything before I sold it. I just gave it a little more skinny pedal anyways, glad to see someone with the same thought process- good luck

 

Do you not have HPTuners? Why not just set your idle speed around 1,000?

 

It’s possible that the ecm won’t do anything if it’s grounded already. I was able to notice about a 100rpm difference when I tapped the wire to ground. I left it off. I never tried to see if it increased rpm from a start up when already grounded.

 

No, is that a normal thing for people to have now a days?

 

Per Howe, keep your lines short and direct to rack.

 

Dunno, but it’s sure worth it

 

there definitely are differences and also just within the 2nd gen there were 3 different frame configs

edit - i have an 05’ build date 06’ if you ever need to scan the early 2nd gen pos noodle frame

 

I had heard that before. So yeah lots to consider