Problem with Rover 414

Sounds like you need a new throttle position sensor unit.

Thanks Paul!! they have change the potensiometer to a second hand still the same. This is a beter dicription of the problem:

Driving along when a complete loss of power occurs. Ignition remains on (and all electronic equipment works) but pressing accelerator doesn't give power. Changing down gears just slows the car faster, until eventually it comes to a halt. If you then depress the clutch or take it out of gear it will tick over apparently normally, although maybe a little rough. If you tap the

accelerator the revs dip, and if you press it enough it will stall. Leaving the engine running for a while, or turning off and re-starting it straight away, doesn't cure it. It needs to be left off for a minute or two before restarting and then it's fine - will revv up and drive off. When it is not playing silly beggars it runs well. There is usually the odd hiccup of power going off then coming back again, which warns you that it will probably soon cut out completely. The power loss is clean - not like spluttering/misfiring. Any ideas what is causing it?!

=CE=9F/=CE=97 Paul Hubbard =CE=AD=CE=B3=CF=81=CE=B1=CF=88=CE=B5:

No, you need a NEW pot fitted, a sh unit probably has the same fault. Aso, consider that the throttle stepper motor may be intermittantly faulty or dirty conenctions to it and the throttle pot.

After that, start looking at the following other causes of power loss.

Timing belt incorrectly ftted or tensoned. Vacuum leak at throttle body. Fuel filter choked. Fuel tank vent blocked. Faulty fuel pump. Worn, faulty or incorrectly gapped plugs. Blocked/worn injector(s) on fuel system. Uneven or low cylinder compression (engine worn out).

Rdgs

PDH

Driving along when a complete loss of power occurs. Ignition remains on (and all electronic equipment works) but pressing accelerator doesn't give power. Changing down gears just slows the car faster, until eventually it comes to a halt. If you then depress the clutch or take it out of gear it will tick over apparently normally, although maybe a little rough. If you tap the

accelerator the revs dip, and if you press it enough it will stall. Leaving the engine running for a while, or turning off and re-starting it straight away, doesn't cure it. It needs to be left off for a minute or two before restarting and then it's fine - will revv up and drive off. When it is not playing silly beggars it runs well. There is usually the odd hiccup of power going off then coming back again, which warns you that it will probably soon cut out completely. The power loss is clean - not like spluttering/misfiring. Any ideas what is causing it?!

?/? Paul Hubbard ??????:

Driving along when a complete loss of power occurs. Ignition remains on (and all electronic equipment works) but pressing accelerator doesn't give power. Changing down gears just slows the car faster, until eventually it comes to a halt. If you then depress the clutch or take it out of gear it will tick over apparently normally, although maybe a little rough. If you tap the

accelerator the revs dip, and if you press it enough it will stall. Leaving the engine running for a while, or turning off and re-starting it straight away, doesn't cure it. It needs to be left off for a minute or two before restarting and then it's fine - will revv up and drive off. When it is not playing silly beggars it runs well. There is usually the odd hiccup of power going off then coming back again, which warns you that it will probably soon cut out completely. The power loss is clean - not like spluttering/misfiring. Any ideas what is causing it?!

Have you had a garage checking the computer for error messages in the log? There might be a clear indication there to what is faulty.

Bjorn

Thanks ! In this engine there is not a loging system!

I know someone who once had a Vauxhall Omega which ran very eratically when warm, but was OK when you let it cool off and resume your journey. Sounds very similar to your problem, and the problem there was most likely a problem in the fuel supply.

Also remembered that a defective thermostat can do wacky things as well on a Rover.

Well, I had sort of similar problem with my Rover 25, with sudden total loss of power occationally, and after a while a sudden self-healing. The problem was the oxygen probe giving bad messages to the computer. This was replaced and no problem since.

Bjorn