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    P38 car jerks over when reverse selected.

    Thanks Saint. It was a bit of a slog. Here are two pictures of the ABS pump and pressure switch. Pressure switch Connector with the pump switch drawn in.(motor removed) The other 3 terminals are the two switches for the brake ECU. The pressure switch just unscrews from the pump body...
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    P38 car jerks over when reverse selected.

    I thought I'd just pass on cure here. The brake problem wasn't fully cured. It dawned on me that the ABS pump was running continuously. I copped it quickly so the pump didn't do any major long runs. The Black relay coil was fully energised by 12Volts once the key was turned to position 2...
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    P38 car jerks over when reverse selected.

    Thats an interesting piece of info, as the random cranking is an ongoing situation, and the solenoid relay is grounded by the Becm to alllow cranking when the key is turned to position 3. So it might have explained both the brake and starting problems. I thought it worth taking a look at the...
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    Thinking wether to attempt starter or not???

    I disagree. Take out all the easy fixings first. Then when it's hangin' by the last bolt there is more incentive to get it out.:)
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    P38 car jerks over when reverse selected.

    This is going to sound crazy, but. I found a scrappy with a pump. When I got it connected up it was pretty noisy. So I swapped the motor from it onto my old ABS unit. Now it runs sweet as a nut. The original motor feels like it is full of gravel, and is very hard to turn. The most...
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    P38 car jerks over when reverse selected.

    Thanks for those replies I would try cracking the unions, except for something happened today. Driving along, I heard a beep looked at the message display ABS FAULT and the "TC" light is up. I pulled over switched off, and headed off again, after a while Beep "TC" light up again. When I...
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    P38 car jerks over when reverse selected.

    quick question, not ready to give up yet. If it was a petrol car I would be pulling HT leads to isolate a faulty cylinder. With the engine running, and vibrating as per the fault. Would slackening off a Diesel injector union, be a good idea,to test if fuel is present, or does it blow out...
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    P38 car jerks over when reverse selected.

    Thanks Datatek and Saint, looks like there's no point in changing that sensor so, as it's not involved in the day to day running of the engine. The fact it is a switch for fans rathar than an analoge sender explains its open circuit reading. I would love to get it on a diagnostic if I knew...
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    P38 car jerks over when reverse selected.

    Ah. I see, thanks.
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    P38 car jerks over when reverse selected.

    A bit more info on this. The symptoms have developed a bit. When cold, the car starts up and idles around 900 rpm, pressing the brake pedal causes the rpm to drop to about 700 rpm the idle becomes very lumpy with the engine shaking. Releasing the pedal it stays lumpy. If the brake pedal is...
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    P38 car jerks over when reverse selected.

    Ok I think I had a bit of a breakthrough tonight. Drove the last seven miles home, on full beams and heater full on as it's freezing here. Pulled up at the garage, jumped out to open the door, full beams and heater blower still going cabin lights etc. Car in P handbrake on. Jumped back...
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    P38 car jerks over when reverse selected.

    Yes most movements of the gear stick, produce a click, followed by the engine revs dropping, enough for the vehicle to heel over. It's still generaly driving fine and pulling well. But there is some vibration at motorway speed. Used to be a very smooth drive. My gut reaction is still it's not...
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    P38 car jerks over when reverse selected.

    It's going to be another week before I even find time to investigate this, just flat out at the moment. I am driving the Rangie very gingerly. who decided to take away the dipstick? The worst part is, I have to pick up a car with the trailer on Wedensday next too. Hope the old girl rewards me...
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    P38 car jerks over when reverse selected.

    Here's a quick update. No time to investigate the poor car yet, still driving, but definitly getting worse. Selected reverse the other day and the engine almost cut out, also d is engaging harshly now. When slowing to a stop the last downchange is becoming very harsh. For a little while I was...
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    P38 car jerks over when reverse selected.

    The torque convertor locking or jamming, sounds like a possible idea alright, as I imagine the fluid coupling at tick over wouldn't have much resistance. I will change the fluid and filter and have a look around. I've really been hoping it's not a problem internal to the gearbox. I think those...
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    P38 car jerks over when reverse selected.

    Yes, I always put my foot on the brake when selecting gears from stopped. Just tried it as a test. Engine Idles at about 750 to 800 rpm warm, little higher cold.
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    P38 car jerks over when reverse selected.

    I wouldn't quite call it a clunk, but it almost is. But it really grabs the engine for a moment. It's a fairly rough mechanical event, if you know what I mean. Oh just remembered. If I select Reverse with my foot off the brake, the car moves away perfectly normaly without any effect on the...
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    P38 car jerks over when reverse selected.

    Hi guys. Get a lot of good info from this site, try to give back when I can. My car is 2001 P38 Diesel autobox 130,000 miles. This problem came on suddenly, so it's not a sort something wearing out slowly thing. When selecting reverse from any position. There is a click from under the car...
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    Problem starting. Leak off pipes.

    No it's not the relay causing the starting issue. Voltage appears on the relay coil terminals intermittently. I did manage to replicate it by pushing on the entire fuse board. I took the fuse board apart, without separating the two boards, didn't see anything. Will have to look deeper into...
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    Problem starting. Leak off pipes.

    Well this my 3rd post in two years. But I do learn a lot from this site. In the last two years the Rangie has challenged me on a few occasions. It has dropped itself onto the bumpstops twice, once at 65 mph on the motorway. Luckily through this site I learned where to get diagnostic software...