my cinqs developed a flat spot throughout most of the rev range under 3000 rpm when it warms up. it was very sight the other day but i replaced the rocker gasket (needed doing anyway) abd it sorted the problem untill today, ad its returned.

the car is also idling oddly and quite slowly sometimes.

the idliling is odd at any temp but the flat spot is worst when the cars warmed up.

anyone any ideas?

cheers.

ok.. just taken it out from cold and the flat spots there all the time now.. and its there through the whole range.. the cars just holding back all the time!

i had a sililar problem before when i had split the vacume hose but ive check it and its fine...

Air Filter? I mean i Kno bugger all about Cinques and cars in general.. i gather u kno quite a bit.. jus thought i'd mention it as my old skool standard airfilter i imagen held back a bitch.. - Feeding Wrank Exhaust fumes through it for coldstarts..

The map sensor is the hose on it correctly.....

success!... well nearly!

the prob is alot better now, almost completly gone.

the culprit?

The mckrich chip!

took it out and swapped back for the standard chip. turned the cinq on. idled normal. reved it a bit.. didnt have the cold start flat spot anymore. took it for a drive... fooking hell! its one speedie cinq! alot faster than it ever was running the mckrich chip. took it for a long drive down the motorway and the flat spot only appeared once when doing aorund 80mph... tried to accelerate and the car held back for a bit but it went after about 20 seconds and drove normaly the rest of the way.

so it seems that the mckrich doesnt seem to like my car.. atall!

so thats not going back in anyway. ut the flat spot was still there momentarily but i dont know if this was just a little thing cause by something else. ill see what its like on the way to and from work tomorrow.

love my cinq again.

I'd say your Lambda sensor is about to die.

..and removing the chip has just reset the ECU really..

You had better get an order in for a new lambda sensor. it will progressively get worse and worse till it won't run at all

any particular reason why the lambda would just die?

i am getting odd idle on mine, there is a small split at one end of the map sensor hose. Could this be a cause? Cost much to replace? Can i tape it up for now?

joe, if there is a split in the hose then thats probably the problem. i had a split in mine and the car was horrible to drive...try selotaping it... doing that managed to get me home from wales!...

but any thin tubing will do the job.. try halfrauds.

i used windscreen washer tubing from a spare bonnet

nice one, cheers mate

Would nominate you for rep, but well...you know

joecinq said:

i am getting odd idle on mine, there is a small split at one end of the map sensor hose. Could this be a cause? Cost much to replace? Can i tape it up for now?

Click to expand...

Place near me sells the vac tubing kits for 50p each. Length of nylon tube and two rubber ends.

Hi,
If it holds back when you press the throttle its a vac advance problem, means either the hose to the map sensor is blocked or leaking or your map sensor is on the way out......

Thanks
Paul T

i know the hose is fine. ive checked it.

ive got a lambda on the way to me now (thanks alex) anyway so if that doesnt solve the problem then ill change the map sensor.

fixitagaintomorrow said:

I'd say your Lambda sensor is about to die.

Click to expand...

yep it happened to mine, no warning from the lovery lamp on the dash either

easy to do just get a new one and a big spanner.

Unless its my car which has had its downpipe botched together and the lambda welded in. Kinda means when it fails i gotta get a new downpipe too.

hi guys can you let me know wat the outcome is please iv got the same flat spot cheers