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James72
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Joined: 16 Dec 2014
Posts: 14
Location: Devon
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 Posted: Thu Dec 18, 2014 23:08 Post subject: Very heavy steering on idle and low rpm |
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I'm very new to the world of LC80's, but not afraid to get my spanners out, next on the list is the steering, once the engine is up to temp, I'm getting pretty much no power assistance at idle and very low rpm, 600 or so, mainly when trying to park, which makes it a bit of a challenge, slight blip of the throttle and it's back, so far I've checked the level, it seemed ok.
Also plugged it in to my mates trick diagnostic reader, no fault codes present.
Next job at the weekend will be, give it a good clean around the pump and check for any leaks and and air in the system.
I've been reading the workshop manual and I'll be following the trouble shooting flow chart, seems like the solenoid valve on the steering box could be a candidate but no code thrown ?
Any thoughts or previous experiences would be more than welcome
Cheers James
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1994 4.2 TD VX Auto. |
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| Posted: Thu Dec 18, 2014 23:08 Post subject: Google Ads keep this community free to join! |
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joinerman
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Joined: 11 Sep 2005
Posts: 2200
Location: Here & there
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| Posted: Thu Dec 18, 2014 23:13 Post subject: |
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| Bleed the old fluid out & keep topping up with new until new is coming out. |
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Towpack
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Joined: 10 May 2005
Posts: 1315
Location: Sheffield
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| Posted: Thu Dec 18, 2014 23:18 Post subject: |
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There is a vacuum operated, 'idle up' actuator that opens the throttle slightly when the steering is used and compensates for the load on the engine by the steering pump and prevents the drop in idle speed. Check this is working OK. The air con, if fitted, also has a similar setup to increase the idle speed.
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Phil
1998 HDJ80 Amazon VX 4.2TD
2004 Yamaha R1 (Sold)
2011 Ducati 1198SP (Sold)
2012 kawasaki ZZr1400
2002 Honda XR650R (BRP)- STOLEN GRRRRR!!!
2010 Husaberg FE570....YIPPEEEEE!!!!
2003 GT XCR3000
1995 Border Collie-Passed away 23-5-2011 |
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James72
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Joined: 16 Dec 2014
Posts: 14
Location: Devon
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| Posted: Thu Dec 18, 2014 23:23 Post subject: |
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| joinerman wrote: |
| Bleed the old fluid out & keep topping up with new until new is coming out. |
Joinerman, Yep definitely a good shout, I'll change the fluid
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Towpack
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Joined: 10 May 2005
Posts: 1315
Location: Sheffield
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| Posted: Thu Dec 18, 2014 23:24 Post subject: |
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| joinerman wrote: |
| Bleed the old fluid out & keep topping up with new until new is coming out. |
I bled mine by removing the return hose from the reservoir and feeding it into an empty plastic container. Then got someone to start the engine and as the old fluid got pumped into the plastic bottle I refilled it with new fluid through the reservoir cap but you have to be quick 'cos it pumps round at a fair old rate!. About 15-20 secs was long enough IIRC before stopping the engine.
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Phil
1998 HDJ80 Amazon VX 4.2TD
2004 Yamaha R1 (Sold)
2011 Ducati 1198SP (Sold)
2012 kawasaki ZZr1400
2002 Honda XR650R (BRP)- STOLEN GRRRRR!!!
2010 Husaberg FE570....YIPPEEEEE!!!!
2003 GT XCR3000
1995 Border Collie-Passed away 23-5-2011 |
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James72
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Joined: 16 Dec 2014
Posts: 14
Location: Devon
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| Posted: Thu Dec 18, 2014 23:29 Post subject: |
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| Towpack wrote: |
| There is a vacuum operated, 'idle up' actuator that opens the throttle slightly when the steering is used and compensates for the load on the engine by the steering pump and prevents the drop in idle speed. Check this is working OK. The air con, if fitted, also has a similar setup to increase the idle speed. |
I have been reading about the idle up, I'm not sure I have it, I just have a single vacuum valve which I assume is for the air con, the manual doesn't say much about it as far as I can see, apart from that it operates when your at full lock when the pump is at full chat and lowers the rpm a bit and it compensates for that by boosting it back up ?
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1994 4.2 TD VX Auto. |
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James72
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Joined: 16 Dec 2014
Posts: 14
Location: Devon
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| Posted: Thu Dec 18, 2014 23:34 Post subject: |
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| Towpack wrote: |
| joinerman wrote: |
| Bleed the old fluid out & keep topping up with new until new is coming out. |
I bled mine by removing the return hose from the reservoir and feeding it into an empty plastic container. Then got someone to start the engine and as the old fluid got pumped into the plastic bottle I refilled it with new fluid through the reservoir cap but you have to be quick 'cos it pumps round at a fair old rate!. About 15-20 secs was long enough IIRC before stopping the engine. |
Ideal cheers Phil, sounds pretty straight forward.
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Towpack
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Joined: 10 May 2005
Posts: 1315
Location: Sheffield
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| Posted: Thu Dec 18, 2014 23:43 Post subject: |
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| James72 wrote: |
| Towpack wrote: |
| There is a vacuum operated, 'idle up' actuator that opens the throttle slightly when the steering is used and compensates for the load on the engine by the steering pump and prevents the drop in idle speed. Check this is working OK. The air con, if fitted, also has a similar setup to increase the idle speed. |
I have been reading about the idle up, I'm not sure I have it, I just have a single vacuum valve which I assume is for the air con, the manual doesn't say much about it as far as I can see, apart from that it operates when your at full lock when the pump is at full chat and lowers the rpm a bit and it compensates for that by boosting it back up ? |
The idle up on mine operates virtually as soon as I turn the wheel preventing any drop in idle speed, in fact it actually increases slightly.
_________________
Phil
1998 HDJ80 Amazon VX 4.2TD
2004 Yamaha R1 (Sold)
2011 Ducati 1198SP (Sold)
2012 kawasaki ZZr1400
2002 Honda XR650R (BRP)- STOLEN GRRRRR!!!
2010 Husaberg FE570....YIPPEEEEE!!!!
2003 GT XCR3000
1995 Border Collie-Passed away 23-5-2011 |
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James72
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Joined: 16 Dec 2014
Posts: 14
Location: Devon
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| Posted: Thu Dec 18, 2014 23:50 Post subject: |
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| Towpack wrote: |
| James72 wrote: |
| Towpack wrote: |
| There is a vacuum operated, 'idle up' actuator that opens the throttle slightly when the steering is used and compensates for the load on the engine by the steering pump and prevents the drop in idle speed. Check this is working OK. The air con, if fitted, also has a similar setup to increase the idle speed. |
I have been reading about the idle up, I'm not sure I have it, I just have a single vacuum valve which I assume is for the air con, the manual doesn't say much about it as far as I can see, apart from that it operates when your at full lock when the pump is at full chat and lowers the rpm a bit and it compensates for that by boosting it back up ? |
The idle up on mine operates virtually as soon as I turn the wheel preventing any drop in idle speed, in fact it actually increases slightly. |
Ok cheers Phil, if I have it, I don't think it's working as it pretty static.
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analogue man
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Joined: 01 Dec 2014
Posts: 10
Location: northwest
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| Posted: Mon Dec 22, 2014 4:12 Post subject: No power steering at tickover |
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| Hi..... I have the exact same problem on mine. I used a Lucas Oil product and it works fine. It's more like strawberry jam than ATF, Pop it in the reservoir, bleed it , lock to lock a few times and you're away! OK it's more of a bandaid fix than a proper repair but it works. I'm told Toyota do a rebuild kit for the pump for about £40 which I'll do at some point and report back. |
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James72
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Joined: 16 Dec 2014
Posts: 14
Location: Devon
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| Posted: Tue Dec 23, 2014 19:07 Post subject: Re: No power steering at tickover |
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| analogue man wrote: |
| Hi..... I have the exact same problem on mine. I used a Lucas Oil product and it works fine. It's more like strawberry jam than ATF, Pop it in the reservoir, bleed it , lock to lock a few times and you're away! OK it's more of a bandaid fix than a proper repair but it works. I'm told Toyota do a rebuild kit for the pump for about £40 which I'll do at some point and report back. |
I might give that a go as a tempory fix, if new fluid and bleeding doesn't cure it, don't think I'll get a chance until after Crimbo, to gety spanners out now !!!
Ive seen the rebuild kits on e bay from oz, seems like the way forward in the long run.
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