Looking for Help
Thread Starter
Navigator
Joined: Aug 2009
Posts: 9
Likes: 0
Looking for Help
I have an 89 which over the past 5 years has had a very intermittent no start just crank. It would fire up randomly 1hr or a day later.
Recently it began running rough after driving for a while....rough idle, slight surges. I have replaced the distributor, MAF burn off relays, and TPS. Now if it does start after sitting it will run fine for a few minutes and have a rough idle and will not start again unless I spray fluid into the throttle body. If I let it sit for a while it might start without spraying fluid. Anyone have any thoughts or suggestions......ECM, Idle air control?
Recently it began running rough after driving for a while....rough idle, slight surges. I have replaced the distributor, MAF burn off relays, and TPS. Now if it does start after sitting it will run fine for a few minutes and have a rough idle and will not start again unless I spray fluid into the throttle body. If I let it sit for a while it might start without spraying fluid. Anyone have any thoughts or suggestions......ECM, Idle air control?
Le Mans Master
Joined: Jul 2007
Posts: 5,356
Likes: 2
From: No HOA, New Hampshire
Cruise-In X Veteran
St. Jude Donor '09
So you are saying it will start with a spray. That tells me the ignition is fine. So it must be fuel. Filter replacement is first. Pressure test fuel rail is second. That test will point you to pump/regulator/injector tests.
Please don't just throw new parts at it, that will cost you a fortune.
Please don't just throw new parts at it, that will cost you a fortune.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 414
From: WV
So you are saying it will start with a spray. That tells me the ignition is fine. So it must be fuel. Filter replacement is first. Pressure test fuel rail is second. That test will point you to pump/regulator/injector tests.
Please don't just throw new parts at it, that will cost you a fortune.
Please don't just throw new parts at it, that will cost you a fortune.
Instructor
Joined: Oct 2004
Posts: 208
Likes: 1
From: Santa Rosa CA
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Drifting
Joined: May 2005
Posts: 1,336
Likes: 12
From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
Definitely call Jon @ Fuel Injector Connection!
1-770-888-1662
Also, do a search here about him to find out what the rest of this forum thinks about Jon and his company and customer service.
You can read about my experience here:
http://forums.corvetteforum.com/c4-t...long-read.html
SAVE the WAVE!
1-770-888-1662
Also, do a search here about him to find out what the rest of this forum thinks about Jon and his company and customer service.
You can read about my experience here:
http://forums.corvetteforum.com/c4-t...long-read.html
SAVE the WAVE!
Thread Starter
Navigator
Joined: Aug 2009
Posts: 9
Likes: 0
Thank you all...
Thank you for the help. I replaced 3 injectors for now and she purrs like a kitten again. As far as John, I have read quite a bit on this forum and can tell he is a very good source and is well loved by many on this forum. I am sure I will buy a set from him and replace them all in the future. I wanted to be able to drive it this weekend so I just replaced the bad ones. Thanks again!
Drifting
Joined: May 2005
Posts: 1,336
Likes: 12
From: Chicago Executive Airport, formerly known as Palwaukee
No-IL Events Coordinator
St. Jude Donor '12-'13-'14-'15-'16-'17
Happy to hear about your success! What a difference with 8 injectors ALL working! Some folks don't understand how important they are.
How many miles are on your '89?
SAVE the WAVE!
How many miles are on your '89?
SAVE the WAVE!