knoxville
Member
Registered: 3rd Apr 02
User status: Offline
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the cars a 1.4 16v. When you first start it, the engine is hunting between 750 and 1200 rpm, this settles down after a while. but then when driving it steady, it hesitates and almost feels like a mis fire. i've done plugs and leads, but still no joy. any help would be appreciated
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corsaon18s
Member
Registered: 16th Jul 03
User status: Offline
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have you tried resetting the ecu?
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knoxville
Member
Registered: 3rd Apr 02
User status: Offline
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no, how's it done?
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corsaon18s
Member
Registered: 16th Jul 03
User status: Offline
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simply disconnect the battery for an hour so all the memory is lost from the ecu then after that time connect it up, start then engine.....but dont rev and let it idle for a minute or two hopefull this should sort it out, then all you gotta do is reset your clock and tune in your radio again and your away!
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corsaon18s
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Registered: 16th Jul 03
User status: Offline
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it should idle about 800 rpm there are a couple of other hings you could do like cleaning the air intake and the throttle body cos you may have a slight blockage.
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knoxville
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Registered: 3rd Apr 02
User status: Offline
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i'll give it a try later, cheers
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corsaon18s
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Registered: 16th Jul 03
User status: Offline
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all the best
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Blazer
Member
Registered: 31st Aug 02
Location: Devon - Drives: frost blue 1.4L 8V
User status: Offline
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it might also help if u changed the oil
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the_legend_of_yrag
Member
Registered: 7th Jul 03
Location: Cambridgeshire
User status: Offline
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Is your engine management light on by anychance?
Mine was on and the engine was lumpy idling, so i a mate pluged the computer thing in to see what the problem was, and eneded up being the map reading sensor. One end had come off, put it back on and all was fine and dandy :-d
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matt_jonesuk
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Registered: 27th Feb 03
Location: worcester
User status: Offline
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u got ur plugs on the right torque settings? sounds like plugs mine was doing the small hesitating, misfiring and sometimes decided not to accelarate (almost killed me once pulling out of a junction)
found out the guy who serviced my car changed my plugs but literally i could undo them with my fingers lol
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luca2020
Member
Registered: 26th May 02
Location: Maidstone, Kent
User status: Offline
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christ could be a number of many things:
Idol control valve
Throttal Positional Sensor
Inlet manifold
Inlet manifold gasket
Map reader
Air mass meter
ECU
1 of the wiring looms
lose connection from 1 of the wires connecting the sensors to the ecu
spark plugs and leads
need i go on lol
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and-m
Member
Registered: 5th May 02
Location: Liverpool. Drives. Skud vRS.
User status: Offline
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Read the fault codes from the ECU.
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ally denton
Member
Registered: 31st May 03
Location: stonehouse, scotland
User status: Offline
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no it sounds like you have a small air leak. have a listen while revving the engine under the bonnet. u fitted an induction kit?
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Avinitlarge
Member
Registered: 16th Sep 01
Location: Rotherham Drives: Mondeo Si Turbo
User status: Offline
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Does it have an EGR valve?? I have just fitted one to my mates Astra and the was idling wrong
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knoxville
Member
Registered: 3rd Apr 02
User status: Offline
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its got an induction kit on, but thats been there for 2 years with no bother. i've done all the obvious... plugs, leads, oil change. i've had a similar problem before and that was an air leak which i sorted. but can't find one this time. i don't really want to go spending huge amounts of money sorting it out. i'm selling it in the next couple of weeks. The engine management light's not on.
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