Absolutley Stumped
Discussion
Continuing on from my thread about the car not idling properly......
Basically I decided to give it another shot at fault finding, so borrowed a fault code reader from fellow PHer.
So, plug the reader in and take the car for a drive. Nothing. Absolutley nothing, but she was running like a dog. Coughing and spluttering all over the place, hesitating and stalling.
I really am at a loss for what it could be. I think I am going to call it a day and book her in at the local garage and see if they can find out what it is.
Cheers,
Alex
Basically I decided to give it another shot at fault finding, so borrowed a fault code reader from fellow PHer.
So, plug the reader in and take the car for a drive. Nothing. Absolutley nothing, but she was running like a dog. Coughing and spluttering all over the place, hesitating and stalling.
I really am at a loss for what it could be. I think I am going to call it a day and book her in at the local garage and see if they can find out what it is.
Cheers,
Alex
Alex, for what it is worth, a chap in our (Herts/Beds) region suffered same symptoms, and after endless head scratching and frustration, took it to Barnet TVR.
They identified a faulty rotor arm/assembly - apparently a dodgy batch was produced at some point causing this issue.
May be worth checking this out.
They identified a faulty rotor arm/assembly - apparently a dodgy batch was produced at some point causing this issue.
May be worth checking this out.
coetzeeh said:
Alex, for what it is worth, a chap in our (Herts/Beds) region suffered same symptoms, and after endless head scratching and frustration, took it to Barnet TVR.
They identified a faulty rotor arm/assembly - apparently a dodgy batch was produced at some point causing this issue.
May be worth checking this out.
Thanks coetzeeh. Ironically I am in Hertford so they would probably be the nearest guys to me. I might have 1 last ditch and get a new dizz rotor and cap to see if that works. If not then I think I am going to take it off to Offords and use it as an excuse to get the exhaust conversion done at the same time They identified a faulty rotor arm/assembly - apparently a dodgy batch was produced at some point causing this issue.
May be worth checking this out.
Cheers,
Alex
coetzeeh said:
Alex, for what it is worth, a chap in our (Herts/Beds) region suffered same symptoms, and after endless head scratching and frustration, took it to Barnet TVR.
They identified a faulty rotor arm/assembly - apparently a dodgy batch was produced at some point causing this issue.
May be worth checking this out.
exactly the same hereThey identified a faulty rotor arm/assembly - apparently a dodgy batch was produced at some point causing this issue.
May be worth checking this out.
Alex,
I've jusy had this problem on mine. It was after some extensive engine work, but it would cough and splutter all the way through the range, part or full throttle and cut out intermittently. I could kick myself because I replaced rotor, cap, plugs and leads, still there, a whole host of other bits borrowed (fuel pump, ignition amp, coil), new coolant temp sensor and measuring every voltage and resistance there is on the back of the ECU.
Guess what it was....
.... No. 3 plug lead not fitted propely in the dizzy!
I mean honestly! What threw me though was A) a tuner telling me my HT was fine & B) the fact I had new leads etc. But it didn't feel like a 1 cylinder misfire. It felt more like it was running out of fuel. I wonder if the unburnt fuel was reaching the lambda and it was reducing fuel from seeing a "rich" exhaust gas???!!??
What really pi$$ed me off was that I also borrowed a fault code reader, but at no point did it show a missfire on the left bank.
A simple spark plug tester (glass tube thingy with an air gap in it) allowed me to find it.
I'm still kicking mysellf for missing such a simple thing, but I must say, those leads are a right pain to fit in the cap with that coolant hose close over the dizzy. That one lead didn't go in because the metal end was to open to fit in the cap properly. [/excuses]
Learnt a lot about how it all works though!
Nick
I've jusy had this problem on mine. It was after some extensive engine work, but it would cough and splutter all the way through the range, part or full throttle and cut out intermittently. I could kick myself because I replaced rotor, cap, plugs and leads, still there, a whole host of other bits borrowed (fuel pump, ignition amp, coil), new coolant temp sensor and measuring every voltage and resistance there is on the back of the ECU.
Guess what it was....
.... No. 3 plug lead not fitted propely in the dizzy!
I mean honestly! What threw me though was A) a tuner telling me my HT was fine & B) the fact I had new leads etc. But it didn't feel like a 1 cylinder misfire. It felt more like it was running out of fuel. I wonder if the unburnt fuel was reaching the lambda and it was reducing fuel from seeing a "rich" exhaust gas???!!??
What really pi$$ed me off was that I also borrowed a fault code reader, but at no point did it show a missfire on the left bank.
A simple spark plug tester (glass tube thingy with an air gap in it) allowed me to find it.
I'm still kicking mysellf for missing such a simple thing, but I must say, those leads are a right pain to fit in the cap with that coolant hose close over the dizzy. That one lead didn't go in because the metal end was to open to fit in the cap properly. [/excuses]
Learnt a lot about how it all works though!
Nick
Thanks Guys.
I have decided to cut and run and take the car up to Offords on Thursday. My rationalle is threefold:
1 - Testing and replacing random parts is getting expensive
2 - The longer it takes the less time I have driving it (although with the current weather that is no great issue)
3 - I am using it as an excuse to get the sports exhaust conversion done at the same time
I have decided to cut and run and take the car up to Offords on Thursday. My rationalle is threefold:
1 - Testing and replacing random parts is getting expensive
2 - The longer it takes the less time I have driving it (although with the current weather that is no great issue)
3 - I am using it as an excuse to get the sports exhaust conversion done at the same time
Alex Gurr said:
Thanks Guys.
I have decided to cut and run and take the car up to Offords on Thursday. My rationalle is threefold:
1 - Testing and replacing random parts is getting expensive
2 - The longer it takes the less time I have driving it (although with the current weather that is no great issue)
3 - I am using it as an excuse to get the sports exhaust conversion done at the same time
Alex,I have decided to cut and run and take the car up to Offords on Thursday. My rationalle is threefold:
1 - Testing and replacing random parts is getting expensive
2 - The longer it takes the less time I have driving it (although with the current weather that is no great issue)
3 - I am using it as an excuse to get the sports exhaust conversion done at the same time
Had similar problem with my Chimaera and it turned out to be the trigger in the dissy, two of the points were corroded! While there are many possiblities as to whats causing your problem, it might be worth checking out?
A guy with a Chim at Le Mans had what sounds like similar symptoms.
The car would run fine except when pulling away when it would cough and stutter, drop revs then suddenly pick up when revved and be OK.
All the HT side was checked and looked OK but when someone took the dizzy cap off and knocked the rotor arm the brass/copper? plate on the top fell off.
The owner swore the arm was newish and was genuine Lucas though.
For what it costs I'd replace the rotor arm - and if it turns out not to be the problem keep the original as a spare anyway.
The car would run fine except when pulling away when it would cough and stutter, drop revs then suddenly pick up when revved and be OK.
All the HT side was checked and looked OK but when someone took the dizzy cap off and knocked the rotor arm the brass/copper? plate on the top fell off.
The owner swore the arm was newish and was genuine Lucas though.
For what it costs I'd replace the rotor arm - and if it turns out not to be the problem keep the original as a spare anyway.
Alex Gurr said:
Should there be any movement in the dizzy cap. I have noticed that there is a slight movement in mine (a few mm side to side), as if the clamps are not holding it tightly enough in place. I wonder whether this might be causing an issue.
Cheers,
Alex
There will be a very small amount of play, although the clips will hold the cap down and stop it rattling about. but if it's literally a few mm of play that's far too much and would make me wonder whether the cap was seated correctly or perhaps had been damaged.Cheers,
Alex
GreenV8S said:
Alex Gurr said:
Should there be any movement in the dizzy cap. I have noticed that there is a slight movement in mine (a few mm side to side), as if the clamps are not holding it tightly enough in place. I wonder whether this might be causing an issue.
Cheers,
Alex
There will be a very small amount of play, although the clips will hold the cap down and stop it rattling about. but if it's literally a few mm of play that's far too much and would make me wonder whether the cap was seated correctly or perhaps had been damaged.Cheers,
Alex
The saga continues.........
coetzeeh said:
Alex,
Did you get the Griff sorted? What was the diagnosis?
Henk
Yep, she is all sorted now.Did you get the Griff sorted? What was the diagnosis?
Henk
I took the car to Offords in the end and used it as an excuse to get the sports exhaust conversion done at the same time.
The problem turned out to be the distributor. It appears that the rotor was either the wrong type or poorly fitted and had actually started fowling on the cap (not something I could see I must confess), so in the end the put a new cap and rotor on. They also took the pelumn chamber off and gave it a good clean out as it was pretty gunky.
So she is now back at home where she belongs and sounding very mean. I just need the weather to cheer up so I can enjoy her properly.
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