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  1. Engine Loping at Idle

    General MK1 - FAQ
    My engine is loping significantly at idle. I really cant describe what's going on well in writing, but I'll attach a video (link below) so that you can see (mainly hear) what I'm talking about. Any help in diagnosing issue is welcome. Note: I'm aware of the vacuum line being disconnected from...
  2. 3sgte engine

    SoCal For Sale Forum
    Hello all, Are you bored at home in quarantine? Looking for a fun project? Simply looking for spare parts for your boosted 3s? Then boy do I have the opportunity you've been waiting for! I have a 3sgte motor sitting around from an old project that needs to be cleared out right away. It's been...
  3. Owner of a rev2 3sge mr2 looking for some advice with connectors

    New Member Introductions
    Hi everyone, this is my first post here. I've picked up a 1992 Rev2 with a 3sge and I was doing a bit of investigation and it doesn't seem to have an o2 sensor anywhere. The downpipe needs replacing and I can't find one without an o2 port (like the one that is currently on the car). There are...
  4. It's all my brothers fault

    MKI, 84-89 NA & SC
    I let my brother test drive it one time and he blew out third gear. So I did the right thing, and pulled the entire engine and replaced the transmission with a C52. Upon reassembly, I cannot get the car to start. Initially the grounding was bad due to a cut ground wire. Checked spark, timing...
  5. 3SGTE Swap Transmission Questions

    Common Engine Swaps and Related Discussions
    Hi, I have a 1991 MR2 that was originally NA but was engine swapped by the previous owner. I bought it when I didn't know what I should have been asking about so I have no idea if the clutch or transmission was changed with the engine, and sadly no longer have the seller's contact information...
  6. Price Check Request on Newish 20V Blacktop 4AGE

    MKI, 84-89 NA & SC
    Hi guys, I'm considering doing a MK1.5 build, and wondering what I might be able to get if I sell my current engine, which is a 20V blacktop, that I had rebuilt by a shop. It only has 40,000kms on it since the rebuild, summer driven only, stored in heated garage in the winters. Can anyone guess...
  7. Looking to get rid of spare engine

    Tri-State MOC
    I am reaching out to the Tri-State local MR2 crowd to see if anyone is interested in a completely disassembled 5sfe? It was the original engine to my 91 that had a bad bearing. I pulled the engine and swapped in a lower mileage 5sfe and have been driving it ever since. It had roughly 105k...
  8. Problem with my New/old 91 MR2T

    3SGTE Turbo
    Hello Mr2oc, Just a little background about me. I recently purchased a 91 mr2 turbo with 123k miles several months ago and its been a fun car to drive on the weekends (Daily a 08 SI). I've been using this site as a reference in order to familiarize my self with the Mr2 and it's community...
  9. 3rd gen 3sgte misfires

    MKII, 90-99 NA & Turbo
    I know there are threads on here about this topic, but the symptoms people are having dont all add up to what my car is doing, so i thought id post. This is a 3rd gen that has been swapped in a few weeks ago. So the problem is that during idle and acceleration to about 2500 rpm, my engine...
  10. 4agze engine blows smoke

    MKI, 84-89 NA & SC
    Hey guys. I have an 87' MR2 with a 4agze swap and i'm having some issues with the amount of smoke it puts out. It starts fine, but if you let the engine idle for awhile or give it throttle the engine starts to pour out a lot of smoke both from the exhaust, and from where the exhaust manifold...
  11. WTB: Built/Forged Gen2 Shortblock

    MKII MR2 Parts Wanted To Buy Or Trade
    Looking for whatever you guys got in terms of a built/forged shortblock. Already have my head squared away (Unless you have some BC 264's kickin' around) Basically just need: Block, forged pistons, stock rods are fine, decked/honed/hot tanked..whatever. Shoot me a PM or email [email protected]
  12. Engine suddenly running on two cylinders.

    Normally Aspirated
    Greetings, everyone! Yesterday i was driving down the highway at about 80 MPH and suddenly i noticed that when i pressed down the gas pedal, the vehicle wouldn't respond and go faster. I immediately took the next exit and popped up the engine bay lid to see what was going on. My first thought...
  13. 92 N/A Engine problem still cant find solution please help!

    Normally Aspirated
    Ok here is the start of my thread to solve every issue I have with the 5sfe. I'm a new owner to toyota mr2 I've been a Honda guy for the longest and I've been looking to switch over since all of my family member are toyota lovers. N/A 5spd 72k miles. 1. To start off having hard time starting...
  14. Best oil for 5sfe

    General MR2 Discussion
    Novice question, but the mr2 is my first car and I'm looking to change the oil on it soon. I was wondering what is the best oil to use? NA 5sfe Thanks in advance.
  15. coolant leaking towards front of engine, 4A-GE

    MKI Cooling & Charging
    I just went to check an MR2 for sale and the only catch is there is a coolant leak. Its not terribly bad but I haven't found to much on what it might be on here or other forums. My best guess its coming from around the A/C compressor somewhere. Looking down in the engine compartment I couldn't...
  16. Slow Acceleration Question?

    MKII, 90-99 NA & Turbo
    Hey Guys I know very little about cars and have just had an issue, my car (1990 MR2 manual non turbo) is not accelerating at its usual rate at all. It started just yesterday, and under 60kms/h even if i put my foot down to the floor it just accelerates fairly slowly - nothing compared to what...
  17. Gen II turbo engine studder under high speed deceleration

    MKII, 90-99 NA & Turbo
    When I accelerate quickly from 70 to 80 and back off the throttle "quickly" the engine seems to almost misfire or stumble. Accelerate and decelerate at any other lower speed is no problem at all. In general the engine is smooth as silk. Any ideas on what is happening? Time for a tune up ... :-) ??
  18. FS Complete 3SGTE engine with spares

    1990-1999 MR2 Parts Swapper
    There are several items for sale... no longer running the 3sgte engine and offering up and engine and lots of spares. 1. A complete 3sgte engine with throttle body. This is a perfect donor or parts swap engine. New head gasket 500 miles ago, but does need a timing belt and timing belt cover...
  19. '87 Engine and Accessories Part Out

    1984-1989 MR2 Parts Swapper
    I just finished my BT swap and I am putting up all the un-needed parts for sale. Here is what I have off the top of my head but if you need something that you don't see please let me know. All parts are off of my NA 87 MR2 with MT. Here is a picture of everything. If you need a picture of...
  20. Loosing power while driving?

    MKII, 90-99 NA & Turbo
    Hey guys, I recently bought a 92 Turbo and I love her to death but she's developed a problem. When I drive and go up a hill or press the pedal down, the engine cuts out and the check engine light turns on, and it only gives me spurts of power until I stop asking the engine for so much. This only...