Jonesy
USMC Iraq Combat
- Joined
- May 15, 2017
- Messages
- 32
Trying to diagnose a hiccup in acceleration that I've read about numerous times before but doesn't seem to apply to my issue.
I have a 34,000 mile stock 87. It has the 28lb injectors,
Factory non-hot-wired fuel pump and factory regulator
Stock turbo
The car has Evans waterless coolant and a 160 stat
It runs perfect, until it heats up, and then the only problem is under light load, coming off a stop, it hesitates under acceleration. Giving it more throttle doesn't help, taking my foot off the throttle to let the RPM come down doesn't help. It's just a small hiccup until it hits about 25 to 30 MPH and it's fine. It doesn't cut out again until I am at a light, take off slowly, under light load, and it it starts again.
The problem is intermittent, it does do jt every single time, but it only does it once the car is hot.
I drove the car on the highway a few weeks ago and it's perfect while cruising, always has been.
I have a brand new NOS coil pack and ignition on it. I just upgraded to the 3" MAF and a translator. It has a turbo tweak chip for 93 octane and that's what I burn. I baby the car, it doesn't get driven hard and it doesn't leak oil.
It has a new AC Delco fuel filter and plugs with less than 1000 miles on them. This happens whether the AC is on or off.
Scan master numbers are all excellent, always are. It has a new AC Delco non heated O2 sensor. BLMs and INT numbers always near 128 no matter the temp outside. I live in S. FL and drive it in the summer also.
Should I look at cleaning the throttle body intake and IAC valve? This hasn't been done before by me.
Thanks for your input.
I have a 34,000 mile stock 87. It has the 28lb injectors,
Factory non-hot-wired fuel pump and factory regulator
Stock turbo
The car has Evans waterless coolant and a 160 stat
It runs perfect, until it heats up, and then the only problem is under light load, coming off a stop, it hesitates under acceleration. Giving it more throttle doesn't help, taking my foot off the throttle to let the RPM come down doesn't help. It's just a small hiccup until it hits about 25 to 30 MPH and it's fine. It doesn't cut out again until I am at a light, take off slowly, under light load, and it it starts again.
The problem is intermittent, it does do jt every single time, but it only does it once the car is hot.
I drove the car on the highway a few weeks ago and it's perfect while cruising, always has been.
I have a brand new NOS coil pack and ignition on it. I just upgraded to the 3" MAF and a translator. It has a turbo tweak chip for 93 octane and that's what I burn. I baby the car, it doesn't get driven hard and it doesn't leak oil.
It has a new AC Delco fuel filter and plugs with less than 1000 miles on them. This happens whether the AC is on or off.
Scan master numbers are all excellent, always are. It has a new AC Delco non heated O2 sensor. BLMs and INT numbers always near 128 no matter the temp outside. I live in S. FL and drive it in the summer also.
Should I look at cleaning the throttle body intake and IAC valve? This hasn't been done before by me.
Thanks for your input.