96 Tacoma running awful but no CEL???
Posted by Designer_Tune4986@reddit | askcarguys | View on Reddit | 5 comments
96 Tacoma 2.4L auto trans 177k miles. I just picked the truck up a few weeks ago now. I bought it knowing of the issues.
New parts FROM PREVIOUS OWNER: fuel pump, fuel filter, air filter, vacuum lines, spark plugs,distributor,injectors,egr valve,
How it all started was when you’d start the truck it would start up fine and idle rough (1500-2000) RPMS. If you eased into the gas pedal it would be fine but if you tapped it too hard it would drop down to 200ish rpm’s and try to die or it would die. I called out a friend we did a smoke test and fixed a lot of major leaks put a new MAF on and new spark plugs and a new 02 sensor since we had a extra.The truck runs significantly better now it doesn’t die as easily. Now the issue is when I go to give it has instead of dying it takes about 2/3 seconds to actually start moving. It drops in RPMS when given gas sputters a few times then finally goes. I’m lost as to what it could be at this point. Any advice would be appreciated thanks.
PlaneLongjumping9652@reddit
I still think it’s worth getting a spark tester and checking how it’s doing, otherwise the ECM is to blame imo since you ship of Theseus-ed the whole system
PlaneLongjumping9652@reddit
If the ignition coil isn’t included in the distributor that would be my next step. Your engine just needs spark, time, fuel, air to run. Without the computer intervening to stop the engine for some reason, and with fuel pressure to the rail, with good airflow and a throttle that opens, the most likely answer is the coil has degraded and can hardly produce a spark when it needs to at low rpm’s, and trying to achieve higher rpm’s it fails completely.
Designer_Tune4986@reddit (OP)
On higher rpms it runs perfectly fine it’s just whenever you first give it gas or lets say I’m driving 45 and let off the gas for a second then give it gas again it wants to die
MoonManY0@reddit
Replace maf again, or get an oem used.
Designer_Tune4986@reddit (OP)
Forgot to mention that I did replace both MAF and 02 myself with OEM parts still no luck