Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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Right this is not a major problem, more of an annoyance, thought id see if anyone can shed any light for me.
Basically its not behaving. During any gear, at 1900-2100rpm its really juddery and lumpy. If u change gear in say 4th, the needle hitting 2000rpm when u change. If u take your foor off the accelerator then put it right down, the car for a split second doesnt react then its lumpy when u accelerate for a second then fine??
Im not great at explaining these problems bu in EVERY gear its juddery at 2000rpm, when its cold its even worse!
I have absoloutely no idea what it could be, Or weather my cars running right, im guessing it should be like this tho!
Any ideas would be helpfull 
Cheers guys
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Ojc
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Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
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Seems like its missing a beat, maybe change the plugs and leads and give it a good service?
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Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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It feels like misfiring i na strange way, not that i am pretending to know anything about engines, but im thinking it could be something to do with the injectors?? 
Ollie it had new plugs and leads when i brought it, not gone that far in it tbh wouldnt have thought they would need replacing,
Do you reckon my lifters would be contributing to this as well?
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Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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i get something simular in my 1.6.... if ya plant yer foot down in say 4th gear at 30-40MPH it will judder and 'spit' and make strange noises from the airbox area... i put it down to it needing to be mapped but maybe not i dunno?
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ed
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Registered: 10th Sep 03
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Could be the crankshaft position sensor.... It shouldn't be the lifters, all they do is sound really noisy when they are on the way out.
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Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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is that the same as the crank angle sensor...? [thread hijack] should the engine start with the cranck angle sensor pluged out [/thread hijack] mine does
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
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Jambo, I'd check that when you slightly open the throttle it "clicks" as it opens, then check the plugs on the TPS, AMM, and crnak pos sensor, and clean out the TB with some carb cleaner.
Siberia: Yes the 16XE's will start without the crank sensor in, the ecu light comes on and it uses the cam phase sensor, but is on the "limp home" mode. Also means the bottom pulley has fallen off, when someone that was meant to tighten it did 
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Siberia
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Registered: 9th Oct 03
Location: Leprechaun Land Drives : Zafira GSI
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quote:
Originally posted by j1400
Jambo, I'd check that when you slightly open the throttle it "clicks" as it opens, then check the plugs on the TPS, AMM, and crnak pos sensor, and clean out the TB with some carb cleaner.
Were are they?
quote:
Siberia: Yes the 16XE's will start without the crank sensor in, the ecu light comes on and it uses the cam phase sensor, but is on the "limp home" mode. Also means the bottom pulley has fallen off, when someone that was meant to tighten it did
you see i do be clever by diconecting this every night to stop thiefs but to my surprise the other day i forgot to reconnect it but the engine still started i thought there were demons at work.
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Rileysport
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Registered: 18th Jun 04
Location: West Yorkshire
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TPS - Throttle Position sensor on side of throttle body
AMM - Air mas meter, in induction pipe after air filter
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TOMAS
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Registered: 7th Aug 02
Location: Nottinghamshire
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Sounds like a ignition/timing thing. Leads, plugs, dispac, cam/crank sensors....
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Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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Did paperclip test a lil while ago and crank sensor was what it came up with, so i guess it could be that.
What should i do to rectify it, does it need changing? ithink i know what the crank is
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
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You always get the crank sensor as the engine's not running.
I'd try close the plug gap a little, and cleaning up the plugs and TB first.
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Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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Ok, cheers guys, cleaning plugs is ok i could do that, where is the plug for the crank sensor? oh and dont say the crank 
Also where is the TB located?
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
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The TB is under the top hat athe back of the engine in the middle.
The crnak sensor plug is located by the left struft and goes to the front of the engin ealong with the CTS loom and the dash temp sesnor loom too.
Sib- if you want to imobilise the car, remove the coil plug 
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Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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Ok just regular carb cleaner in the tb?
Do the crank sensor plugs ever where out?
J1400 you are very helpfull  Appreciate the advice dude
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lee mitchell
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Registered: 26th Jan 01
Location: kent...drive's: eveyones conversion cars hard lol
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quote:
Originally posted by j1400
Jambo, I'd check that when you slightly open the throttle it "clicks" as it opens,
im sure the LET's dont click when u open the butterfly only the xe's
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
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Cranks sensors don't normally wear out they have no moving parts, but the cable degrades.
Yeah regular carb cleaner and a rag to remove and cud round the butterflies
Lee- is there a resiastance on the LET TPS's that is meant to be for shut throttle, cause the sutter sounds more like the TPS is out and light throttle upsets it a little.
Oh yeah, that offer of a spin in a 20XETB'd corsa is open, will be running in about 4 weeks, or in 7 fully mapped up. could do both for a laugh, will be in your area.
James
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Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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i forgot to mention when on light throttle the problem is most noticable!!!!! Thats when i notice it the most is normal day to day driving
if im driving hard u cant notice it at all.
Also whats TPS??
[Edited on 14-04-2005 by Jambo]
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lee mitchell
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Registered: 26th Jan 01
Location: kent...drive's: eveyones conversion cars hard lol
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quote:
Originally posted by j1400
Cranks sensors don't normally wear out they have no moving parts, but the cable degrades.
Yeah regular carb cleaner and a rag to remove and cud round the butterflies
Lee- is there a resiastance on the LET TPS's that is meant to be for shut throttle, cause the sutter sounds more like the TPS is out and light throttle upsets it a little.
Oh yeah, that offer of a spin in a 20XETB'd corsa is open, will be running in about 4 weeks, or in 7 fully mapped up. could do both for a laugh, will be in your area.
James
aint got a clue mate but i know the tps dont click on LET's like xe's do
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Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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So how much do u reckon a garage would charge for changing the lifters,
If the lifters are £160 plus the labour that gunna be about £300????
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James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
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£160 for lifters, then £16-20 rocker cover seal £2-4 cam seals
+3-4hrs labour (cause they like to mince)
I'd put up with the lifters and fix the running pro first
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Jambo
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Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
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Yeah will do, just have to sound like a transit for a bit longer 
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