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Topic: It won't start - 2.3l Ultima (Read 1806 times) |
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BrianC
Newbie
Posts: 18
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It won't start - 2.3l Ultima
« on: Apr 12th, 2014, 6:54pm » |
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Can anyone help me with a little problem with my 2.3l Ultima Auto Estate.
I have just replaced the Inlet Manifold to solve a split in the water space behind the Thermostat. When I had the manifold out, I noticed a number of problems with the Engine wiring loom so replaced a number of the wires. Having put it back together, the car starts but immediately stops and won't restart unless it is left for a while. I have checked the wiring and there are no shorts or broken wires. There is power to the coils and there is a spark. I have checked the odb2 for error codes but there are none. When turning the engine over and resting my foot on the brakes, the peddle moves suggesting there is some vacuum in the inlet manifold. Has anyone got any ideas what could be wrong and what to check next?
Thanks all, Brian
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amigafan2003
Full Member
I'm a YaBB newbie!
Posts: 972
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Re: It won't start - 2.3l Ultima
« Reply #1 on: Apr 12th, 2014, 7:26pm » |
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Sounds like an air leak - check and double check all the vacuum pipes that you had disconnected when you replaced the manifold or pipes that you might have disturbed.
I assume you used a new inlet gasket when refitting the manifold?
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: It won't start - 2.3l Ultima
« Reply #2 on: Apr 12th, 2014, 7:32pm » |
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Could be fuel, did you use your injectors & regulator or did the repacement manifold come with injectors & regulator.
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ABS multiplug wheel sensor pins MK IV or MK 20
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BrianC
Newbie
Posts: 18
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Re: It won't start - 2.3l Ultima
« Reply #3 on: Apr 12th, 2014, 8:01pm » |
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I did use new gaskets but it is possible one isn't seated properly. There isn't much space to see what your doing. I did keep the original injectors and regulator so that should be fine, unless there is a vacuum leak where they go into the manifold.
Thanks for your help. Looks like I may have to remove the manifold and start again......
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Tompion
Administrator
1997 2.3 Ultima estate.
Posts: 2918
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Re: It won't start - 2.3l Ultima
« Reply #4 on: Apr 12th, 2014, 8:55pm » |
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I think you’d be very unlucky to dislodge a gasket from its recess.
I don’t really see why it would start then not start again because of an air leak.
I assume the PATS light isn’t showing a code.
A couple of problems I’ve seen reported were a hose getting trapped (I think under the EGR fixing) & the engine breather getting dislodged under the exhaust manifold – it’s the other end of the hose at the back of the inlet manifold that connects with a right angle rubber boot – the easy way to test that is to just plug the hole at the inlet.
Given that you’ve found bad wires you’re quite likely to have problems with others you’ve disturbed, the wiring to the idle air control valve is a possibility as that’s important with a cold engine. Although you’d expect a code for that, did you check for codes on the enhanced tab of obd2?
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ABS multiplug wheel sensor pins MK IV or MK 20
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PJDavis
Senior Member
2 x 1995 Jag X300 3.2 / 4.0 (Henley) 1957 XK140
Posts: 1474
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Re: It won't start - 2.3l Ultima
« Reply #5 on: Apr 12th, 2014, 9:43pm » |
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Isn't there a wee one-way valve between the Servo and the Inlet Manifold? Is it working?
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I love 'Movvy'
1995 Jaguar XJ6 X300 3.2 (Henley)
1995 Jaguar XJ6 X330 4.0 (Dopey)
1957 Jaguar XK140 USA (converted to RHD, and to have fitted Mk10 420G Engine with BW 65 Auto Trans)
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TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
Posts: 2257
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Re: It won't start - 2.3l Ultima
« Reply #6 on: Apr 13th, 2014, 6:30pm » |
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I'd think that if it had a vac leak it would run OK at higher revs, like if you held the throttle a bit.
A shot in the dark here, but is the idle air control valve actuating?
Does it start and run if you hold the throttle open a bit?
Hope this helps,
Bruce.
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Bruce - '07 Jaguar XKR coupe, '95 Jaguar XJ Sport 4.0, '82 Ford Capri 2.0 Ghia, '15 Honda Civic (sloooooww..)
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