Kinda of a random question but I can’t seem to find any answers to this. Is there a difference between the 3VZE’s that came in the 1988 model year trucks/4Runners and the 1989 model year engines? I’ve seen multiple parts such as intake tubes, fuel injectors, accelerator cables, etc. that are listed for 89 and up 3.0’s but not for 88. I just got an intake tube from Rock Auto for an 89 that fits perfect on my 88 truck.

I’m shopping around for a new accelerator cable as well as possibly injectors, but it seems to be a common theme with these along with other parts that they only are listed for 89 and up what gives? I doubt Toyota would want to significantly change the 3.0 after only 1 year of offering it as I believe 88 was the first year.

Also no one could ever give me an answer as to why every single radiator that’s supposed to fit my truck doesn’t actually fit and is meant for a 2nd gen 4Runner. Literally went through 3 of them then finally just modified one to fit.

 

I have run into similar situations with parts. I noticed Toyota does it as well classifying parts as 89-95 although they would fit 87 and 88 model years. I think they go by production years rather than model years. My 90 was produced in mid 1989. Could be wrong but my best guess.

As far as the 3VZE, in general of course, can be grouped into the 88-91 style and the 92-95 style. Differences including electrical, distributor cap, and temp sensor block arrangement to name a few. Igniton coils however seemed to have changed over come 90 from the can style to a sealed box type.

 

Thanks for the reply. And yeah you may be right about Toyota just classifying stuff oddly. When shopping for ignition coils for my other vehicle (‘13 Scion FR-S) I was prompted to specify if my car was “production year A or B”. I’ve been the 86/BRZ community for almost 4 years and have never heard of any differences within the 13 model year itself. So all in all maybe it is just Toyota. Thanks for the info on the engine changes in the 90’s. I remember reading a while back that it was the years you listed but all these parts saying 89 and up has thrown me off recently now that I’m starting to work on my truck more.

 

So would a 89-91 3.0 throttle body fit on my 88? The nipple for the coolant line snapped off from corrosion and my truck has 370k on it so I’m thinking of replacing it.

 

I'm not sure on throttle bodies as I believe there are different casting numbers and such. Another difference I forgot to mention between engine eras was the water hoses. 88-91 have an extra hose off the front water outlet.

My 88 is out having the 4x4 and transmission rebuilt so can't check that one. Looking at my 89 and my 90 both appear identical including the vacuum line locations.