12-18-2010, 11:24 AM
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#1
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Join Date: Dec 2010
Location: Harrisburg, PA
Posts: 42
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Member
Join Date: Dec 2010
Location: Harrisburg, PA
Posts: 42
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9.1 mpg and a bad speedometer :(
I just installed a replacement ECU, but my speedometer is still a bit wacky. Not as bad as before with the old ECU. MY mileage was horrible and the more I read, it may have to do with the EGR system. Any ways to trouble shoot that would be a help.
Also, does anyone know what sends the trucks real speed to the speedometer?
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12-18-2010, 11:52 AM
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#2
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Member
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Join Date: Aug 2010
Location: Ottawa, Ontario, Canada
Age: 36
Posts: 86
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Member
Join Date: Aug 2010
Location: Ottawa, Ontario, Canada
Age: 36
Posts: 86
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What year is your 4Runner? There was a recall on the first batch of electric clusters on the 92's... My 1992 4Runner's cluster was replaced at 32,000km by the dealer back in 1994.
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Dave MacLaurin
- 1971 Datsun 240Z (Series 1, EFI, 5mt)
- 1988 Toyota Celica Turbo 4WD (100% stock)
- 1989 Toyota Celica GT-S (Summer Driver)
- 1999 Toyota 4Runner SR5 V6 (Daily Driver)
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12-19-2010, 09:13 PM
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#3
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Moderator
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Join Date: Jun 2004
Location: the Socialist State of Maryland
Posts: 11,432
Real Name: The Chosen One
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Moderator
Join Date: Jun 2004
Location: the Socialist State of Maryland
Posts: 11,432
Real Name: The Chosen One
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What year, engine, trans ?
2WD or 4WD?
The sending unit is in the t-case or trans, and could be mechanical or electronic.
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- the Internet - the mother-ship of people who don't know much and aren't afraid to go public
'84 4Runner - ARBed 5.29s F&R, 4.7 & 2.28 t-cases, 2" drive train lift, BudBuilt x-member/skid, 30 spl Longs
'83 Toy P/U - Buick 231 V6, Holley 4 bbl, Weiand intake, Downey headers, TH350 w/700R4 low gearset,
'89 4Runner SR5 - stock
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12-20-2010, 01:44 AM
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#4
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Member
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Join Date: Dec 2010
Location: Harrisburg, PA
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Member
Join Date: Dec 2010
Location: Harrisburg, PA
Posts: 42
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It is the 1995 limited 4x4 automatic 3.0 v6.
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12-20-2010, 08:32 AM
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#5
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Join Date: Mar 2010
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My cable to the speedo just started really hating the cold. This morning, it was whining and growling and then it screamed and I was doing 110mph. Funny to watch. Tried to video it with my phone but it calmed back down again.
New cable... soon.
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Charlie
1995 4Runner. 3.0
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12-20-2010, 10:32 AM
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#6
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Join Date: Aug 2010
Location: Ottawa, Ontario, Canada
Age: 36
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Member
Join Date: Aug 2010
Location: Ottawa, Ontario, Canada
Age: 36
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Quote:
Originally Posted by ChoochCharlie
My cable to the speedo just started really hating the cold. This morning, it was whining and growling and then it screamed and I was doing 110mph. Funny to watch. Tried to video it with my phone but it calmed back down again.
New cable... soon.
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92-95 are electric... Might be a bad sending unit at the tranny...
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Dave MacLaurin
- 1971 Datsun 240Z (Series 1, EFI, 5mt)
- 1988 Toyota Celica Turbo 4WD (100% stock)
- 1989 Toyota Celica GT-S (Summer Driver)
- 1999 Toyota 4Runner SR5 V6 (Daily Driver)
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12-20-2010, 02:39 PM
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#7
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Join Date: Mar 2010
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Wait a sec. Mine is a '95, and it's has to have a cable with the HORRIBLE noise it makes, directly related to speed.
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Charlie
1995 4Runner. 3.0
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12-20-2010, 02:57 PM
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#8
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Member
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Join Date: Dec 2010
Location: Harrisburg, PA
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Member
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it's odd, because before the ECU replacement, I reset the ECU via battery disconnect, and all of the sudden the speedometer went right on and normal again, and as soon as the "check engine light" came back on, the speedometer went back to wacky.
I'm just trying to figure out if the speedometer is a symptom, or a cause.
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11-07-2014, 12:47 PM
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#9
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Junior Member
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Join Date: Oct 2014
Location: Hayesville, NC
Posts: 3
Real Name: Les and Des
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Junior Member
Join Date: Oct 2014
Location: Hayesville, NC
Posts: 3
Real Name: Les and Des
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Our Story
Below is our story that we have posted here. Right now our 93 is doing well, but we are afraid to take it too far from home. Sorry it is so long. Sorry we can't help, but we are sympathetic.
We have 1993 SR5 4Runner with a very unique problem . It has been going on (off and on) for almost a year. It has been worked on by three different mechanics.
What happens is this; the speedometer will start bouncing. It may bounce for a long while, but eventually it will quit. Once the speedometer quits it may run fine for a while. BUT once the Odometer/ trip meter quits (and it will) then the transmission will stop upshifting. (1st-2nd-3rd, etc) BUT it may start running right again.
WE HAVE CHANGED ONE SPEEDOMETER SENSOR (at the lower part of the Transmission) TWICE AND THE OTHER ONE ONCE. BOTH HAVE OEM PARTS. Also the mechanics have replaced some of the wiring and plugs to the sensors.
We have been told that the mechanics can’t help us unless the 4Runner will mess-up for them. Of course that hasn’t happened.. The last repair was the mechanic created a new plug for the sensor that is located on the topside of the transmission. It ran around 1600 miles before it started messing up.
One of the things we have learned is to reset the computer by disconnecting the battery for about an hour or so and it will usually run normal for a while.
Story of last trip: We had traveled about 150 miles from home and the 4Runner messed up, We disconnected the battery for about an hour before leaving for home. 30 miles into the trip the speedometer started bouncing. Then 60 miles into the trip the speedometer quit, but the odometer kept working. At about 120 miles in the trip all of it quit working. Stopped for a stop sign and the 4Runner wouldn’t shift out of 1st. We were going to drive it about 3 miles to park it, so we stopped several times to let traffic pass. All of a sudden it started shifting and the Odometer started working. About 10 miles later (right by the mechanic) the speedometer started working for a couple of miles then quit again. Now the 4Runner bounces every once in a while and we are not taking it too far from home.
One other thing that happened trip before last. The Odometer/trip meter started running backwards. We shut the 4Runner off and started it back and it has never done it again.
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