90 km/h top speed?

[Wicked_Sludge]

wonky

wonky

 

[vladj]

oh i know that there is a bump on it. the old owner used to offload this truck and i guess he hit a rock or something but that cant be why it only goes 90km/h. also i flushed the coolant on it when i got it and i used the premix stuff.

 

[Mark_88]

It will certainly cause enough vibration that the truck will not perform properly...I'd get that changed out if you can...

The thermostat should be changed too...try a 190 degree thermostat...they're fairly inexpensive and you can do the job in less than an hour...you won't loose all your coolant either, but you will need to top it up and burp the system to get rid of air bubbles...

Burping simply means running the engine with the cap off till it reaches temperature high enough for the t-stat to open...once the coolant is circulating properly you can top it up in the reservoir or in the top of the rad...

Be careful because you can get gushes out of the top of the rad at times...

 

[Mark_88]

wonky

haha...my favourite word...

 

[Bryan22]

Did you check to see if you have any codes?

 

[vladj]

i did a while back and it came up clear but ill see if i can get some codes this weekend and ill post them up

 

[Bryan22]

maybe a compression test would be informative as well.

 

[feellnfroggy]

If the engine is not getting hot it can also affect the operation of the engine...it is supposed to be hot...I put a 190* t-stat in mine and it actually improved performance somewhat...if you have too high a mix of anti-freeze and the thermostat isn't opening properly the engine does not atomize the gas properly...the line going into the intake helps this process (apparently)...

Looks like it is a stumper...

The vibration can also be a wonky driveshaft...and it may only vibrate at certain speeds if it is not balanced properly just like your tires...and you've mentioned three sets of tires all doing the same thing...I'd have the driveshaft inspected for bumps or bends...

I totally forgot about this. When i wrecked my mustang i bent the driveshaft and it wouldnt go over 55. Not for nothing. I replaced the driveshaft and got my speed back lost the vibration. no probs as far as driveline went.

Also come to find out there was a bent axle. got taht fixed as well, even better performance. Wheel Balance, alignment, all these things affect your accel performance. Below 55 none of the alignment balancing stuff matters, wheel axle driveshaft none of them. But above 55 when you start pushing atmosphere, it becomes a REAL big deal. Look at your driveshaft like he mentioned. take it off look for deficiencies, rotate it. put it back on. if it still vibrates, then turn it one quarter turn then bolt it back on agian. some of the shafts are balanced that way.

 

[vladj]

in that case i have an 87 ranger 2.3L driveshaft laying around. will that fit my 89?
becuase the bend in the driveshaft is like half way in

thanks;

vlad

 

[feellnfroggy]

in that case i have an 87 ranger 2.3L driveshaft laying around. will that fit my 89?
becuase the bend in the driveshaft is like half way in

thanks;

vlad

A bend halfway along the driveshaft is the absolute worst place. It means maximum out of balance for whatever the issue and if spun to fast can even get worse. Absolutley use the other driveshaft (after measuring length) and make sure to search the threads for install details as far as compatibilty, but im pretty sure that ford used the exact same thing for both vehicles, assuming the year is the only difference. Worst case scenario.....it wont work. Best case scenario???? you just saved enoug money to stay ina Holiday Inn.

 

[Mark_88]

Hope you can mate them up...I spent well over $300 trying to mix and match a drive shaft for mine...the motor and tranny came out of a standard cab and I installed them in an extended cab...that required a two piece shaft and I had a heck of a time finding matching pieces...finally had a shop weld the back bracket onto the shaft and it went in with no problems...

Let us know if that gets you your truck back...performance wise...

 

[bluebombersfan]

had similiar problem to speed 110km/H

deleted as my response was pages behind