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4.2 LC - Slight hesitation / slowing during driving


 
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hodgy0_2
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Joined: 16 Nov 2006
Posts: 256
Location: Cambridge

PostPosted: Mon Jul 12, 2021 10:02    Post subject: 4.2 LC - Slight hesitation / slowing during driving Reply with quote

Hi All

I have a slight hesitation when driving - on a constant throttle the car will hesitate / slow i tiny bit

not too badly, (yet) and if you were distracted you may not even notice

i don't think it is transmission related, I am thinking of injectors not firing properly

is the only option to take them out and test?

are the v v expensive to replace

any thoughts / help appreciated

Cheers
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hodgy0_2
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Joined: 16 Nov 2006
Posts: 256
Location: Cambridge

PostPosted: Mon Sep 13, 2021 10:55    Post subject: Reply with quote

Update on this

I was talking to my local garage about this - with a view to booking it in

and they said - the first thing to eliminate was the ERG system

I had cleaned out the ERG system about a year ago (it was unbelievably clogged with 250K worth of *beep*)

I have a previous thread on that, so it was not my first thought tbh

anyway i fabricated a template plate and inserted it into the ERG return pipe

wow, totally fixed the hesitation and the smokey exhaust gone - teh whole engine fees much more responsive and i think better fuel economy

also whilst I was at it, I tensioned the alternator belt(s) as it was making a really annoying screeching noise on startup

and whilst i was at that i cleaned out the contacts on the height controller rocker switch - as it was not initiating the AHC

now a totally different car - and for zero cost
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