opti
Thread Starter
Safety Car
Joined: Jul 2007
Posts: 4,456
Likes: 29
From: Wichita Falls Texas
opti
ok lets see 96 a4 stock 106xxx miles
the car runs like crap and if you let it idle it will die and the tach is messing up and the asr lights are on and when you give it gas it makes a popping nosie and boggs down. does this seem like an opti? the chevy place said it was and they would fix it for 1100 dollars or you think i could do it myself?
the car runs like crap and if you let it idle it will die and the tach is messing up and the asr lights are on and when you give it gas it makes a popping nosie and boggs down. does this seem like an opti? the chevy place said it was and they would fix it for 1100 dollars or you think i could do it myself?
Instructor
Joined: Jun 2003
Posts: 168
Likes: 0
From: Crystal Lake IL
Check fuel pressure. I was having the same problem and everyone kept saying opti. I wouldn't give into it though and finally found the fuel pump was going. Replaced that and runs like new. If it is the opti, definitely do it yourself. It's not a bad job for the $$$ you can save.
Thread Starter
Safety Car
Joined: Jul 2007
Posts: 4,456
Likes: 29
From: Wichita Falls Texas
the fuel pressure is 50 psi it has fuel and starts but if you let it just idle it will die
can anybody copy and paste the directions to replacing the opti and water pump for me thanks.
can anybody copy and paste the directions to replacing the opti and water pump for me thanks.
Last edited by corvette8189; Oct 30, 2007 at 04:19 PM.
Le Mans Master
Joined: Mar 2001
Posts: 7,999
Likes: 14
From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
Cruise-In IV Veteran
St. Jude Donor '12
No copy and paste, but here are the basics:
Drain the cooling system
Remove the throttle body - be prepared to clean and rebuild it
Remove the 3 bolts on each side of the water pump (6 in all)
Mark the position of the damper on the front of the engine, remove the 3 bolts (don't remove the center bolt) and remove it - may need some persuasion here
Remove the three bolts holding the opti on
pull it out, check all the seals for the opti and wp, replace as necessary
Look at the new opti and align the key on the drive shaft (92 is different than yours, should be instructions with the opti)
The opti MUST "pop" on, do not use the bolts to seat it!!!!
put the three bolts in and tighten
put a little permagasket on the wp gaskets to hold them in place
Make sure the waterpump drive lines up
slide it on, now making sure no vaccum lines or spark plug wires are in the way tighten the waterpump bolts (use some paste sealer on the threads)
start the car to make sure everything is on and working
turn off (less than 1 min won't hurt anything)
connect hoses and fill coolant
Drain the cooling system
Remove the throttle body - be prepared to clean and rebuild it
Remove the 3 bolts on each side of the water pump (6 in all)
Mark the position of the damper on the front of the engine, remove the 3 bolts (don't remove the center bolt) and remove it - may need some persuasion here
Remove the three bolts holding the opti on
pull it out, check all the seals for the opti and wp, replace as necessary
Look at the new opti and align the key on the drive shaft (92 is different than yours, should be instructions with the opti)
The opti MUST "pop" on, do not use the bolts to seat it!!!!
put the three bolts in and tighten
put a little permagasket on the wp gaskets to hold them in place
Make sure the waterpump drive lines up
slide it on, now making sure no vaccum lines or spark plug wires are in the way tighten the waterpump bolts (use some paste sealer on the threads)
start the car to make sure everything is on and working
turn off (less than 1 min won't hurt anything)
connect hoses and fill coolant
Instructor
Joined: Aug 2004
Posts: 173
Likes: 1
From: Rumford Rhode Island
ok lets see 96 a4 stock 106xxx miles
the car runs like crap and if you let it idle it will die and the tach is messing up and the asr lights are on and when you give it gas it makes a popping nosie and boggs down. does this seem like an opti? the chevy place said it was and they would fix it for 1100 dollars or you think i could do it myself?
the car runs like crap and if you let it idle it will die and the tach is messing up and the asr lights are on and when you give it gas it makes a popping nosie and boggs down. does this seem like an opti? the chevy place said it was and they would fix it for 1100 dollars or you think i could do it myself?
2 of my 4 opti replacements on my 96 LT4 the tach and asr acted up so I'd say opti. Sorry. Pull the codes to be sure though. Auto zone rents a scan tool I use to get the codes when it dies. Good luck!
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Le Mans Master
Joined: Dec 2000
Posts: 5,386
Likes: 2
From: San Angelo TX
check out this site:
http://www.corvetteactioncenter.com/...+Trouble+Codes
Looks like the codes relate to the MAF. Maybe its just the MAF. Heck, that would be a lot cheaper
. Hope that helps a bit.
http://www.corvetteactioncenter.com/...+Trouble+Codes
Looks like the codes relate to the MAF. Maybe its just the MAF. Heck, that would be a lot cheaper
. Hope that helps a bit.
Thread Starter
Safety Car
Joined: Jul 2007
Posts: 4,456
Likes: 29
From: Wichita Falls Texas
ya i brought it down to the chevy place and they put in a brand new maf and temp sensor. then they said it was the opti and it would cost 1100 just to do that and i said no
Le Mans Master
Joined: Dec 2000
Posts: 5,386
Likes: 2
From: San Angelo TX
oh ok. The codes you posted were probably from before you did the MAF so Im at a loss. Only idea left is to go ahead and do the opti/water pump like they suggested. SO there are no other codes?
Thread Starter
Safety Car
Joined: Jul 2007
Posts: 4,456
Likes: 29
From: Wichita Falls Texas
nope i just pulled the codes yesterday. i rented one form autozone.
P0100-maf or vaf a circuit malfunction
P0102-maf or vaf a circuit low input
P0372-timing refrence high res signal a too few pulse
P0100-maf or vaf a circuit malfunction
P0102-maf or vaf a circuit low input
P0372-timing refrence high res signal a too few pulse