Flat spot/Kangarooing

Discussion and technical advice the SW20 MR2. 3S-GTE, 3S-GE, 3S-FE etc
Anything and everything to do with maintenance, modifications and electrical is in here for the Mk2.

Moderators: IMOC Moderators, IMOC Committee Members

Post Reply
robbie_742003
Posts: 1167
Joined: Wed Dec 15, 2004 7:50 pm
Location: Midlands

Flat spot/Kangarooing

Post by robbie_742003 »

As per title really, if I put my foot down it gets to around 3-4k and really bogs down and judders. Apparently the only thing electronic that hasn't been replaced is the coil and ignitor. Any ideas chaps?
robbie_742003
Posts: 1167
Joined: Wed Dec 15, 2004 7:50 pm
Location: Midlands

Re: Flat spot/Kangarooing

Post by robbie_742003 »

Anything guys? Got a dodgy or badly installed fuel pump from a previous owner which whines excessively, could this be a fueling problem? No error codes either :(
Update. ...... wondered if my car was running in safe mode so did the ECU reset and the car now flies, boosting fine and no bogging down or juddering. Even the fuel pump whine has gone.
Any ideas people?
Thanks
Rob
Davsurfa
Posts: 193
Joined: Sun Jun 23, 2013 6:47 pm
Location: Northants

Re: Flat spot/Kangarooing

Post by Davsurfa »

As a stab in the dark, I'm no expert, check your iscv and tps for a start
gerbil1028
Posts: 1618
Joined: Wed Jul 25, 2007 10:15 pm
Location: NEWBURY BERKS

Re: Flat spot/Kangarooing

Post by gerbil1028 »

Tps has continuity when throttle shut. What symptoms are left.
One day the Phoenix will rise from the ashes.
Zeppozen
Posts: 166
Joined: Sun Feb 22, 2009 7:40 pm

Re: Flat spot/Kangarooing

Post by Zeppozen »

does it do it in wet or dry or both ?

damp or wet electrics can cause it .
robbie_742003
Posts: 1167
Joined: Wed Dec 15, 2004 7:50 pm
Location: Midlands

Re: Flat spot/Kangarooing

Post by robbie_742003 »

Misfire upon acceleration now, little to no boost. Happens regardless of weather. At garage now, should hear summat early next week.
gerbil1028
Posts: 1618
Joined: Wed Jul 25, 2007 10:15 pm
Location: NEWBURY BERKS

Re: Flat spot/Kangarooing

Post by gerbil1028 »

Thought ecu reset sorted it ? Still not tried coil ?
One day the Phoenix will rise from the ashes.
robbie_742003
Posts: 1167
Joined: Wed Dec 15, 2004 7:50 pm
Location: Midlands

Re: Flat spot/Kangarooing

Post by robbie_742003 »

An update all,
Car taken to independent specialist, symptoms are terrible misfire and no boost.
Been like this since I drove it home from seller. After a week of investigation, findings are;
Ignition timing was out, after being assured it wasn't.
ECU tampered with; wire that controls fuel pump earthing out and other wires also messed with so new ECU needed, anyone got a second hand one for me? :-)
Reports now being filed.
At least I might have it back for this nice weather!
juliankv73
Posts: 2669
Joined: Sun Jan 23, 2005 4:04 pm
Location: Sidcup

Re: Flat spot/Kangarooing

Post by juliankv73 »

robbie_742003
Posts: 1167
Joined: Wed Dec 15, 2004 7:50 pm
Location: Midlands

Re: Flat spot/Kangarooing

Post by robbie_742003 »

An update all,
Car taken to independent specialist, symptoms are terrible misfire and no boost.
Been like this since I drove it home from seller. After a week of investigation, findings are;
Ignition timing was out, after being assured it wasn't.
ECU tampered with; wire that controls fuel pump earthing out and other wires also messed with so new ECU needed, anyone got a second hand one for me? :-)
Reports now being filed.
At least I might have it back for this nice weather!
Davsurfa
Posts: 193
Joined: Sun Jun 23, 2013 6:47 pm
Location: Northants

Re: Flat spot/Kangarooing

Post by Davsurfa »

Image
Available on Facebook
robbie_742003
Posts: 1167
Joined: Wed Dec 15, 2004 7:50 pm
Location: Midlands

Re: Flat spot/Kangarooing

Post by robbie_742003 »

Good stuff! Will let you know asap when I've spoke to my friendly mechanic.
Cheers bud.
Davsurfa
Posts: 193
Joined: Sun Jun 23, 2013 6:47 pm
Location: Northants

Re: Flat spot/Kangarooing

Post by Davsurfa »

It's not mine but it's available on there
gerbil1028
Posts: 1618
Joined: Wed Jul 25, 2007 10:15 pm
Location: NEWBURY BERKS

Re: Flat spot/Kangarooing

Post by gerbil1028 »

One day the Phoenix will rise from the ashes.
Laurens PNut
Posts: 55
Joined: Sat Oct 05, 2013 6:11 pm
Location: the Netherlands

Re: Flat spot/Kangarooing

Post by Laurens PNut »

Check plug wires and plugs itself for any cracks.
I had the same issue on my N/A... all the insulators were cracked for some reason.
Post Reply

Return to “MR2 MK2 1990 - 1999 NA & Turbo”