1987 TurboII lagging @ 4000 RPM
#1
Junior Member
Thread Starter
Join Date: Jul 2007
Location: houston
Posts: 30
Likes: 0
Received 0 Likes
on
0 Posts
1987 TurboII lagging @ 4000 RPM
Car runs extremely well untill it hits 4000 RPm then it lags and bogs down. Up shift to next gear and no problem until u hit 4K rpm again. I have changed the turbo boost sensor, resistor pak under air filter box. Is my next move to change the secondary injectors or could it be the ecu. any help appreciated.
#3
Will drive for parts
iTrader: (4)
From the FAQ's
"I have this hesitation whenever I accelerate right around 3500-4000 RPM
The dreaded 3800 RPM hesitation is cause 90% of the time by poor ground connections between the engine, the battery, and the car. Clean or replace all the under hood ground connections. On 86 model year cars , replacing/regrounding the pressure sensor's ground wire has helped (do not re-ground a 87 or later model year). If there is still a problem after that, look at cleaning the fuel injectors and (on a N/A) that your 5th/6th ports are operating correctly."
It could also possibly be clogged cats if you still have them.
"I have this hesitation whenever I accelerate right around 3500-4000 RPM
The dreaded 3800 RPM hesitation is cause 90% of the time by poor ground connections between the engine, the battery, and the car. Clean or replace all the under hood ground connections. On 86 model year cars , replacing/regrounding the pressure sensor's ground wire has helped (do not re-ground a 87 or later model year). If there is still a problem after that, look at cleaning the fuel injectors and (on a N/A) that your 5th/6th ports are operating correctly."
It could also possibly be clogged cats if you still have them.
Thread
Thread Starter
Forum
Replies
Last Post