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Author LET problem, any ideas?
Jambo
Member

Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
15th Feb 05 at 09:42   View User's Profile U2U Member Reply With Quote

Me again


Latest problem with the tubby is she has a strange problem with power delivery. in 2,3,4 gear between 1800-2200rpm, she goes funny

To describe it the power seems to dissapear, almost li a flat spot. But in the same place in every gear, plus it can be jerky too, its almost like kangarooing . Its not something that happens 100% of the time but its happning most of the time, i might add as well, if i come off the throttle in say 4th between 1800-2200rpm it is SO sudden and quite violent!
AK
Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
15th Feb 05 at 10:10   View User's Profile U2U Member Reply With Quote

could be a lot of things?

What plugs are you running, and when were they last changed?

Has the turbo noise got louder, you could have a boost leak?

On the GT every 3k she used to get new plugs, TB cleaned, ICV cleaned, AFM cleaned..... just to keep her running sweet
Jambo
Member

Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
15th Feb 05 at 10:24   View User's Profile U2U Member Reply With Quote

Not sure when plugs were done ill have to ask shinee.

Whats the best plugs to go for if needs changing? i hear all these twin fire ones r shoot, so just vaux jobs? or r there better?

Is it possible for me to clean the above items or best gettin it done proffesionally?
AK
Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
15th Feb 05 at 10:28   View User's Profile U2U Member Reply With Quote

are you running standard?

if so, fit what is recommended for the c20let, if your running more boost, consider fitting smaller gapped coller graded plugs
AK
Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
15th Feb 05 at 10:29   View User's Profile U2U Member Reply With Quote

clean the throttlebody, afm, and ICV yourself..... dunno ins and outs of let engine so cannot help with locations etc etc

Well, TB is obv, and AFM too

plugs - just buy new, cleaning wont really help
Jambo
Member

Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
15th Feb 05 at 10:32   View User's Profile U2U Member Reply With Quote

im running standard with a large FMIC.

I think i need a new temp sensor too, would this also lead to similar problems? Or contribute?

AK
Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
15th Feb 05 at 10:34   View User's Profile U2U Member Reply With Quote

could do.... depends if the ECU alters fueling etc for temps

change the plugs and temp sensor, go to work cleaning other parts with a can of carb cleaner.....

then go for a drive
Jambo
Member

Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
15th Feb 05 at 10:35   View User's Profile U2U Member Reply With Quote

Thank you adam
Danny69
Member

Registered: 17th Dec 04
Location: Manchester
User status: Offline
15th Feb 05 at 11:01   View User's Profile U2U Member Reply With Quote

where sells the temp sensor and is it easy to fit??

sorry for hijacking!!
Greasemonkey
Member

Registered: 17th Apr 02
Location: Drives a Tractor
User status: Offline
15th Feb 05 at 12:31   View User's Profile U2U Member Reply With Quote

LMF sell em
Jambo
Member

Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
15th Feb 05 at 12:42   View User's Profile U2U Member Reply With Quote

vauxhall
lee mitchell
Member

Registered: 26th Jan 01
Location: kent...drive's: eveyones conversion cars hard lol
User status: Offline
15th Feb 05 at 15:10   View User's Profile U2U Member Reply With Quote

ur running new gm ones
morty
Member

Registered: 5th Apr 02
Location: leeds, Drives:06 Focus ST-2
User status: Offline
15th Feb 05 at 15:58   View User's Profile U2U Member Reply With Quote

try some platinum ngk plugs or better still the iridium ones cost abit but they are cooler runnung and help against detonation.

Darren
AK
Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
15th Feb 05 at 17:29   View User's Profile U2U Member Reply With Quote

i wouldnt bother with Iridiums....

had three sets in all now, 1st set were a write off due to me re-gapping them, coating coroded after that

a 9-12quid a pop it aint cheap
Jambo
Member

Registered: 8th Sep 01
Location: Maidenhead, Drives: VXR Arctic
User status: Offline
15th Feb 05 at 18:35   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by lee mitchell
ur running new gm ones



So if plugs are ok, i guess i aught to sort out temp sensor AFM and ICV?

Resonant Corsa
Member

Registered: 17th Oct 04
Location: northampton
User status: Offline
15th Feb 05 at 18:48   View User's Profile U2U Member Reply With Quote

check the ht leads mate with a multimeter
corb
Member

Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
15th Feb 05 at 20:01   View User's Profile U2U Member Reply With Quote

Is it when you're giving it. Mine does this, it keeps blowing one of the jubilee clips off and air leaks between ic and inlet. I fixed it saturday before going southend, then it had done it again by the time i was back home.

I now have some new clips, gonna try the stronger looking one tomorrow.
AK
Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
15th Feb 05 at 21:37   View User's Profile U2U Member Reply With Quote

fit some mikalor clamps...... wont happen again

 
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