Sloooowwww!!!

elkiny · 06-29-08, 09:35 PM

I know that Landruisers are not race cars, but I think I that I may have a problem or maybe not. It just seems like it takes forevever to accelerate to around 55 MPH or to around 2500 RPM. Someone had mentioned that a bad temp sensor (CAT) could cause this? your thoughts???

1985 FJ60, H55F, OME 3" lift, 33 MT's

elkiny

2mbb · 06-29-08, 09:39 PM

A bad temperature sensor will not cause this. A plugged CAT or exhaust could cause loss of power at higher RPMs. If you feel you are losing power as the RPM's increase then the exhaust might be restricted assuming it runs fine otherwise (no missing, etc.).

The temperature sensor is used to protect the CAT from burning up if you are running rich. It stops the air injection system from injecting air into the exhaust in front of the CAT.

edit: if you are running 33" tires and the stock gears (3.73), you're gonna take longer to get up to speed than guys with a closer to stock overall gear ration. With 33" tires, people usually start thinking about new differential gears.

weak-link · 06-29-08, 10:23 PM

secondarys not opening?

good tune up?

Butt Ugly Chuck · 06-30-08, 09:17 AM

Did you sort out your hesitation/surge? Do you get to 2,500 rpm any faster with the EGR bypassed?

Butt

IndianDoc · 06-30-08, 10:07 AM

Quote:

Originally Posted by Butt Ugly Chuck

Did you sort out your hesitation/surge? Do you get to 2,500 rpm any faster with the EGR bypassed?

Butt

2X If not desmogged this will sure cause that kind of problem.

FJ40Jim · 06-30-08, 10:11 AM

W/ the 33's, how fast is 55 indicated, actually?

beaufort-fj60 · 06-30-08, 10:17 AM

33" are 88.41%.. or 48.63mph

FJ40Jim · 06-30-08, 10:19 AM

55 indicated on the speedo is 48 true?

Check that math. 55 IAS is prolly more like 64 TAS.

beaufort-fj60 · 06-30-08, 10:26 AM

Quote:

Originally Posted by FJ40Jim

55 indicated on the speedo is 48 true?

Check that math. 55 IAS is prolly more like 64 TAS.

yup.. i typed it backwards.

8.64'- circumference in a 33" tire. it has 611.11 revs/mile
7.59'- circumference in a 29' tire. it has 695.65 revs/mile

so +12.15%mph is difference

High Desert · 06-30-08, 11:07 AM

Last time my rig was that slow on the go it was the fuel filter, (my EGR already bypassed) with the rotten fuel out there I'm only getting 18 months or so out of a filter before it goes south, (I drive less than 3k miles a year so mine sits up for weeks at a time which probably adds to my short life problem.

Also here in Oregon they have started putting at least 10% Ethanol in all the fuel. I noticed a drop in both MPG and "performance" (if that word can be applied to a Cruiser under any condition?)

PhilC64 · 06-30-08, 12:44 PM

I had a similar issue until I did a tune up, trans cable adjustment, and a trans flush. Now I have no problem getting up to 70.

ienjoysocks · 06-30-08, 02:47 PM

what would a good tune up entail and what kinda place would you take a cruiser to to get it done?

PhilC64 · 06-30-08, 08:59 PM

Plugs, cap, rotor, wires, pcv, and air filter to start. If you're running the A440 auto trans do the Rodney Party trick, then the Rodney Flush. (Search those terms on how to do it.) Check the throttle cable adjustment and any other cable you have. I spent a good day doing all of this and loved the results on my FJ62!

All this can be done with simple hand tools. Don't be afraid to get your hands dirty, but before you do search the for sale section here or Fleabay for a Factory Service Manual. It's an invaluable reference!

Sloan · 06-30-08, 09:51 PM

I am having a similar experience and the boys at TLC discovered that I had a big crack in my intake manifold.

IndianDoc · 07-02-08, 10:26 AM

Quote:

Originally Posted by Sloan

I am having a similar experience and the boys at TLC discovered that I had a big crack in my intake manifold.

Ouch!!

NCCruiser302 · 07-02-08, 07:15 PM

That's how mine always was, and wouldn't "cruise" despite the name, it was always jumpy, so I rebuilt the carb and now I feel like I've got a brand new rig. I can hardly keep it from running away from me

elkiny · 07-02-08, 09:29 PM

No not yet, I was thinking it may be related. I guess I will try the tune up route first.

06-29-08, 09:35 PM	#1
elkiny IH8MUD Junior Join Date: Apr 2005 Location: Sonora Desert, AZ Posts: 112	Sloooowwww!!! I know that Landruisers are not race cars, but I think I that I may have a problem or maybe not. It just seems like it takes forevever to accelerate to around 55 MPH or to around 2500 RPM. Someone had mentioned that a bad temp sensor (CAT) could cause this? your thoughts??? 1985 FJ60, H55F, OME 3" lift, 33 MT's elkiny

06-29-08, 09:39 PM	#2
2mbb IH8MUD Lifer Join Date: Sep 2003 Location: WC, CA TLCA# 6404 Posts: 1,936	A bad temperature sensor will not cause this. A plugged CAT or exhaust could cause loss of power at higher RPMs. If you feel you are losing power as the RPM's increase then the exhaust might be restricted assuming it runs fine otherwise (no missing, etc.). The temperature sensor is used to protect the CAT from burning up if you are running rich. It stops the air injection system from injecting air into the exhaust in front of the CAT. edit: if you are running 33" tires and the stock gears (3.73), you're gonna take longer to get up to speed than guys with a closer to stock overall gear ration. With 33" tires, people usually start thinking about new differential gears. __________________ mbb 1985 FJ-60

06-29-08, 10:23 PM	#3
weak-link IH8MUD Addict Join Date: Jul 2005 Location: Fresno,ca Posts: 748	secondarys not opening? good tune up? __________________ www.4x4Him.com Pit Bull Rescue Central http://www.pbrc.net/

06-30-08, 09:17 AM	#4
Butt Ugly Chuck IH8MUD Regular Join Date: Jan 2007 Location: Arcata, CA TLCA# 18371 Posts: 326	Did you sort out your hesitation/surge? Do you get to 2,500 rpm any faster with the EGR bypassed? Butt __________________ 7/85 FJ60 261k miles 91 Haro Extreme AL MTB - daily rider 16' Aire Jaguarundi

06-30-08, 10:11 AM	#6
FJ40Jim Cruiser Curmudgeon Join Date: Sep 2003 Location: Lancaster, Ohio, USA TLCA# 1914 Posts: 3,159	W/ the 33's, how fast is 55 indicated, actually? __________________ Thanks, Jim C. TLC Performance Underhood Janitor, cleaning up other people's since 1988.

06-30-08, 10:17 AM	#7
beaufort-fj60 IH8MUD Lifer Join Date: Feb 2005 Posts: 3,198	33" are 88.41%.. or 48.63mph __________________ Real Americans drink PBR

06-30-08, 10:19 AM	#8
FJ40Jim Cruiser Curmudgeon Join Date: Sep 2003 Location: Lancaster, Ohio, USA TLCA# 1914 Posts: 3,159	55 indicated on the speedo is 48 true? Check that math. 55 IAS is prolly more like 64 TAS. __________________ Thanks, Jim C. TLC Performance Underhood Janitor, cleaning up other people's since 1988.

06-30-08, 11:07 AM	#10
High Desert IH8MUD Lifer Join Date: Mar 2005 Location: Central Oregon Posts: 1,034	Last time my rig was that slow on the go it was the fuel filter, (my EGR already bypassed) with the rotten fuel out there I'm only getting 18 months or so out of a filter before it goes south, (I drive less than 3k miles a year so mine sits up for weeks at a time which probably adds to my short life problem. Also here in Oregon they have started putting at least 10% Ethanol in all the fuel. I noticed a drop in both MPG and "performance" (if that word can be applied to a Cruiser under any condition?) __________________ 1984 FJ60, 102k miles, OME med/heavy, BFG/AT 33X10.5 on Stock Wheels, ARB Bullbar W/Warn 8274, Tuffy Console.

06-30-08, 12:44 PM	#11
PhilC64 Huh? Who me? Join Date: Apr 2007 Location: Peoples Socialist Republic of Chicago TLCA# 17885 Posts: 531	I had a similar issue until I did a tune up, trans cable adjustment, and a trans flush. Now I have no problem getting up to 70. __________________ "We are not the base, we are the 2% lunatic fringe." - Ed97Fzj80 89 FJ62 - nicely modded (OME heavy lift and shocks, lunchboxed rear, ProComp M/T's w/ Rockcrawlers, 4Runner front d/b's, de-smogged) 07 FJC - nicely modded (Toytec lift,OME shocks, Digger Link LCA's, Revo's, JBA headers, aFe CAI)

06-30-08, 02:47 PM	#12
ienjoysocks IH8MUD Rookie Join Date: Nov 2007 Location: Sanford, NC Posts: 71	what would a good tune up entail and what kinda place would you take a cruiser to to get it done?

06-30-08, 08:59 PM	#13
PhilC64 Huh? Who me? Join Date: Apr 2007 Location: Peoples Socialist Republic of Chicago TLCA# 17885 Posts: 531	Plugs, cap, rotor, wires, pcv, and air filter to start. If you're running the A440 auto trans do the Rodney Party trick, then the Rodney Flush. (Search those terms on how to do it.) Check the throttle cable adjustment and any other cable you have. I spent a good day doing all of this and loved the results on my FJ62! All this can be done with simple hand tools. Don't be afraid to get your hands dirty, but before you do search the for sale section here or Fleabay for a Factory Service Manual. It's an invaluable reference! __________________ "We are not the base, we are the 2% lunatic fringe." - Ed97Fzj80 89 FJ62 - nicely modded (OME heavy lift and shocks, lunchboxed rear, ProComp M/T's w/ Rockcrawlers, 4Runner front d/b's, de-smogged) 07 FJC - nicely modded (Toytec lift,OME shocks, Digger Link LCA's, Revo's, JBA headers, aFe CAI)

06-30-08, 09:51 PM	#14
Sloan IH8MUD Regular Join Date: Apr 2002 Posts: 237	I am having a similar experience and the boys at TLC discovered that I had a big crack in my intake manifold.

07-02-08, 07:15 PM	#16
NCCruiser302 IH8MUD Rookie Join Date: May 2006 Location: Asheville, NC Posts: 41	That's how mine always was, and wouldn't "cruise" despite the name, it was always jumpy, so I rebuilt the carb and now I feel like I've got a brand new rig. I can hardly keep it from running away from me

07-02-08, 09:29 PM	#17
elkiny IH8MUD Junior Join Date: Apr 2005 Location: Sonora Desert, AZ Posts: 112	No not yet, I was thinking it may be related. I guess I will try the tune up route first.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode