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Topic: holds back (Read 499 times) |
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dave19
Newbie
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Posts: 15
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hi all, put new plugs .coilpacks, renewed wiring. temp sender, on my 96, 2.0l dohc,problem is it ticks over brill,if i build up revs steady brill ,its when i come to drive its like holding back underload,had emissions done all ok lamba sensor ok can anybody help its just a mystery now,cheers dave
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harry.m1byt
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Posts: 792
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Re: holds back
« Reply #1 on: Feb 29th, 2008, 6:27pm » |
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Just a guess...
Have you checked the fuel filter?
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August '95 2.9 12v auto Ultima -
Now flashing 
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cueball57
Newbie
One minute it was ok and then it just went boom!!!
Posts: 10
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Re: holds back
« Reply #2 on: Feb 29th, 2008, 6:31pm » |
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It could be the Brakes binding i had that with my 2.9 12v
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TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
 
Posts: 2257
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Re: holds back
« Reply #3 on: Feb 29th, 2008, 11:17pm » |
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Misfire of some kind maybe? Could be a million things, would help to have a bit more info like how was it running before etc.
Holding back under load? Again, is it a kind of misfire, hesitation or just listless?
What was the lambda value on the MOT?
Had any OBD codes read yet? If it's a fuel issue it'll be running lean and that'll show on the OBD .
Regards, 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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dave19
Newbie
I'm a YaBB newbie!
Posts: 15
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Re: holds back
« Reply #4 on: Mar 2nd, 2008, 12:31pm » |
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hi bruce, its fine on tick over, but its hesitating while driving normal not a lot but you can feel it,as a kind of holding back,lamba value was1.o1, co level0.03. c02 level 15.35%vol. 02 level0.18%. oil temp 11 degrees cent. hc level15ppm, cheers dave.
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Jonnycab
Senior Member
Former owner of 2.3 Ultima Facelift saloon
Posts: 3900
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Re: holds back
« Reply #5 on: Mar 3rd, 2008, 1:28am » |
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You said that you replaced the coil packs.... were they new ones or second hand ?
Also......did you replace the two HT plug leads as well ?
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TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
Posts: 2257
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Re: holds back
« Reply #6 on: Mar 3rd, 2008, 10:57pm » |
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Was it an entire new engine loom? Double check everything is connected ok, worth pulling the plugs and putting them back snug just to make sure. Also double check coilpacks as Jonny said, the windings sometimes break down under load and cause a misfire. Could even possibly be a lazy injector, mine used to have a bad misfire if left standing for a week, never solved it but with hindsight I reckon it was a sticking injector pintle that freed up when hot.
How was it running before the work? An OBD scan would be the best thing now, you really need some fuel trims and things, you're working blind without any info from the engine, you could replace half the d**n engine and still have the problem 
Good luck.
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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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