no power !!!!!!

Jimbob

hi need bit of help i have a vectra c 2.2 elite just put a new engine after other was knackered but have having it on road for short time seem to lossing power and getting worse by the day. starts fine and ticks over perfect and when you rev car no problem but as soon as i drive car the power seems to go and pulls back i have changed coil, spark, throttle body, egr valve but no change there is no ecu lights and no errors are stored either i going to change fuel filter and fuel rail and injectors but thing it might be cat as its the cat from first engine and did get cover in oil due to the old engine push oil though exhaust but any help would be good its doing me head in

Matt

If the cat got flooded with oil, it will be pretty shot. You'd be better getting a new cat fitted if that was the case.

Welcome to the site as well (y)

flatbeat

Sounds the pre cat has started to break up

Jimbob

Thanks for help guy but it don't have a pre cat as its not a turbo model and I took cat off and its starred braking up so knocked it all out till I can get a new cat and seems to be running much better thanks

Matt

Bet it sounds a bit better as well with no cat in. Have you had the EML come out yet as it's now going to be detecting there is no cat present?

PowR_Remap

Doesn't have to be a turbo to have a precat... Astra Z22SE's have precats too, so I would of thought the vectra will as well.

Daz

Vec c will probs have a mani cat. So no precat as on the b's

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MikeS

i am thinking fuel pump or air flow meter

Andrew

I also have a Vectra C 2.2 Elite which has just developed a similar fault. It has the original engine with 54K miles. It starts, ticks over OK and there are no misfires. But drives off OK but when I try to accelerate there is no pulling power. When I try going up a hill putting extra load on the engine, the power seems to come and go in surges.

18 months ago I had bad misfiring which resulted in having the coil pack replaced. The fault also caused the EML to come on which was read to be the camshaft positioning sensor to be out of spec. A week after the new coil pack was fitted the EML came on again which was read to be the same thing. Except this engine doesn't have a camshaft positioning sensor, the function being built into the coil pack system. This wasn't a GM coil pack but as the car has been working OK since then I have simply ignored it. The light still comes on today.

I do not get the impression that my new fault has anything to do with the ignition system, but the power coming in surges makes me think of the fuel pump. I have booked the car into my local GM dealer but they can't look at it for a week. It would be nice if someone might have a potential clue before it goes in as to what is causing the problem.

Andrew

It was being caused by a blocked exhaust.

PowR_Remap

Coming to realise my old Golf 1.8t 20v GTi had a blocked cat and suffered the same problem! Sorry for not remembering sooner (n) , it was 3 years ago, not had it on the TT yet.