BigJimnyMeet (North) 2024 (12 Jan 2024)
14th July 2024
Parkwood Nr. Leeds
Click HERE for details
Intermittent loss of power ?
- PAULWW
- Topic Author
- Visitor
-
Public
I've had it on a diagnostic at my local garage and the only fault found was with the throttle valve which he took out and lubricated..but the problem has continued. Nothing else was flagged as a fault despite my expecting a coil pack problem. In all other respects it idles smoothly and evenly, and continues to work perfectly throughout the rev range.
Has anyone else had this problem? Is it likely to still be the throttle valve or something else?
Thanks.
Please Log in or Create an account to join the conversation.
- wombat
- Visitor
-
Public
Please Log in or Create an account to join the conversation.
- Posts: 3043
- Thank you received: 581
- Points: 3596.00
It doesn't set a fault code.
If it suddenly breaks, go back to the last thing that you did before it broke and start looking there
Please Log in or Create an account to join the conversation.
- PAULWW
- Topic Author
- Visitor
-
Public
Might replace crankshaft sensor as it seems to be a common problem and an easyish cheapish fix at this stage. At least it'd rule that out.
Please Log in or Create an account to join the conversation.
- skywalker65
- Offline
- Premium Member
-
Registered
- Posts: 141
- Thank you received: 20
- Points: 26.00
Took exhaust manifold off to find the cat had started to collapse (2 cats on a VVT) so just knocked it out. Been fine ever since and no effect emissions wise
If in doubt ...... Flat out ??
Please Log in or Create an account to join the conversation.
- PAULWW
- Topic Author
- Visitor
-
Public
So far, suggestions are...blocked fuel filter, blocked cat (s), coil packs, crankshaft sensor, camshaft sensor, spark plugs/leads, throttle valve, oxygen sensor (lambda).
All a bit confusing, but I'd have hoped some of these might show up as a fault on a diagnostic?
My gut feeling is an ignition problem but that doesn't rule much out from the above list :-/
Skywalker: If I read your reply correctly, your experience is that the coil packs initially failed, all was then ok for a while until later when your cats collapsed.
Please Log in or Create an account to join the conversation.
- Posts: 8787
- Thank you received: 1755
- Points: 36118.00
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
Please Log in or Create an account to join the conversation.
- skywalker65
- Offline
- Premium Member
-
Registered
- Posts: 141
- Thank you received: 20
- Points: 26.00
The feeling when the cat had collapsed was like an 2 stroke moped with a blocked exhaust. Occasionally it would clear then back to lack of power.
The coils are prone to failure due to their location. Most stick type coils seem to have a high failure rate on all types of cars.
Coils don't show up on a diagnostic as such compared to sensors. I'm assuming the iridium plugs are ok. Originally designed for the North Star engine, it's not very often that they're the cause of such issues
If in doubt ...... Flat out ??
Please Log in or Create an account to join the conversation.
- PAULWW
- Topic Author
- Visitor
-
Public
Please Log in or Create an account to join the conversation.
- skywalker65
- Offline
- Premium Member
-
Registered
- Posts: 141
- Thank you received: 20
- Points: 26.00
If in doubt ...... Flat out ??
Please Log in or Create an account to join the conversation.
- PAULWW
- Topic Author
- Visitor
-
Public
Please Log in or Create an account to join the conversation.
- jim
- Visitor
-
Public
PAULWW wrote: Problem solved....new coil packs and normal service is resumed !
Thanks for letting us know how it turned out. I have the same issue.
Please Log in or Create an account to join the conversation.