SomedayJ

Hi guys!
Is there any diference between the Toyota truck/4runner 1987 and 1988 models? As far as I know, there's a a 1987 FSM and a 1988 FSM, so I guess there're some changes, can you tell me anything about them?

wallytoo

iTrader: (1)

fuel injectors and resistor solenoid are dfferent.

SomedayJ

Interesting!

Is the red one the 1987 model? or the blue one?

millball

My '87 Runner has no PAIR, while my '88 does. Might be a California/ non- California thing.

My '87 has a 1 wire O2 sensor in the exhaust manifold flange. My '88 has a multiple wire O2 sensor in the pipe just before the cat.

Might be other things I can't remember. I'll look at the emissions labels and post later.

SomedayJ

Thanks!
I took some photos, they're not clear, I'm going to clean those labels and take new photos.

millball

Looks to me like your emissions labels say 1988 and 1989??

se7enine

iTrader: (2)

The blue one has the newer 89-95 intake so it's probably an 89. If it's original. The red is 88 or older.

wallytoo

iTrader: (1)

the blue is 1989, the red is 1988 (and may have been manufactured in 1987). both are different from my 1987.

SomedayJ

Better photos.
I can see in the vehicle emission control information tag:
the red one says 'this vehicle conforms to U.S. EPA regulations applicable to 1988 model year new light-duty trucks' and
the blue one says: ' 'this vehicle conforms to U.S. EPA regulations applicable to 1989 model year new light-duty trucks with a curb weight greater than 3,450 pounds'.

SomedayJ

More photos:

wyoming9

iTrader: (1)

Just what are you trying to figure out ??

Every year has enough things different to cause frustration

SomedayJ

I'd like to buy the FSM, that's the reason of this thread, to know how important those differences are, maybe there're a not big deal and I could be ok with the 87 or 88 or 89 FSM.

wallytoo

iTrader: (1)

ahh. for the mechanical workings, any of them might suffice. however, for electrical/vacuum, the specific year would be needed (resistance values, routing, function, etc).

wyoming9

iTrader: (1)

I have the Electrical Wiring Diagrams for every year Toyota I own

These to me are much more important

Now if your getting into rebuilding gear boxes rears and engines The FSM is helpful

Once you get into the Newer OBII system vehicles The Diagnostics section is a must have at least for me

RAD4Runner

Couple of differences between 1986 and 1988 I ran into:
1988 4Runner has ECU taking part in switching the CSI, while on 1986 ONLY the CSI timer switch does that.
1988 horn circuit has different wire colors, but circuit remains the same.


Not sure about the 1987. Would be nice if 1987 owners can chime in.

87-4runner

Looks like the AFM is different

Jimkola

Toyota shipped us (and billed) complete sets for every model, every year. Sometimes it was a struggle to find a difference from the previous year. When models of back-to-back years looked identical, it was often in the emissions that differences were found, and back then the difference between California models and 49 states was more apparent. By the early-mid 1990's even that difference became minimal.
The most obvious difference in the photo of the red one is the manifold air injection system running along the air intake. My 1987 doesn't have that.
Books are expensive. Well, good ones are. So get the one for your year. And wyoming9 is right, the Toyota EWD is gold for electrical work of any kind. As much as I like the FSM, its electrical section is far from complete. In fact, it gives you just enough enough to draw faulty conclusions. The EWD gives you a ton of specs more. And their images of wiring systems, connectors, location, etc is excellent.