Wird idle and chek engine light

[forgedoil]

my 88 NA Supra, whenever I accelerate full throttle, like entering a fwy, it "bogs"/Putters" when the motor reaches 4200 rpms.

I dont have any codes. What could this be? I recall once forgetting to put the dipstick in the dipstick tube and the car motor would stall at a stop light, once i put the dipstick in the dipstick tube it ceased doing that. With that being said; I noticed the dipstick tube housing was loose and easily came off. So I put silicone around the rim that enters the motor and the seal slightly improved the puttering upon full throttle acceleration but the car still putters" and gets stuck" at around 4200 rpms...???

[RyanDronsfield]

Originally Posted by forgedoil

my 88 NA Supra, whenever I accelerate full throttle, like entering a fwy, it "bogs"/Putters" when the motor reaches 4200 rpms.

I dont have any codes. What could this be? I recall once forgetting to put the dipstick in the dipstick tube and the car motor would stall at a stop light, once i put the dipstick in the dipstick tube it ceased doing that. With that being said; I noticed the dipstick tube housing was loose and easily came off. So I put silicone around the rim that enters the motor and the seal slightly improved the puttering upon full throttle acceleration but the car still putters" and gets stuck" at around 4200 rpms...???

Sounds to me like it could be meany things ur car is natraly aspirated but still relies on a vacuum to do such tasks as regulat fule presser, I'd start with that then check ur ignition (spark plug spark plug wires distributer/coil pac and timing) a nother could be ur fule filter.
Those could cause hesitation/bogging but in a natraly aspirated engines I haven't seen it happn in such heavy symptoms I'd sugest there be multiple problems.

Mine only has hesitation sometimes and only in the lower rpm band ( so no building boost)

[cre]

Ryan, the Code 11 sums it up pretty thoroughly... Actually depending on how completely it's losing power it could lose the stored codes too. The TSRM specifies what you need to test I believe but here's a quick list:

100A Fusible Link, EFI fuse (just replace it), Circuit Opening Relay, EFI relay, clean and tighten the EFI/ECU grounds (connected to the intake manifold toward the rear) and make sure it's mounted securely.

Here's the wiring diagram so you can see how it is all connected:
http://www.cygnusx1.net/Supra/Librar...px?S=Main&P=46



Forgedoil, look in the MKIII FAQ section for details on checking for diagnostic error codes and pot back in a new thread. Posting about your vehicle's problems in someone else's thread while they're still actively trying to fix it usually only causes confusion as your issues are not likely to be related.