opti swap now it wont start
Thread Starter
Staging Lane
Joined: Aug 2010
Posts: 60
Likes: 0
From: Miami, FL
opti swap now it wont start I replaced it with a duralast unit cause my water pump leaked on my old one. Put everything back together and now it wont start it just backfires and makes noises like my crankshaft is hitting something idk how to describe it. I checked all sensors and fuses plug wires and everything is fine. Any ideas on why it work?
Did you put the rotor back how the old one was? When I did my cam swap years ago I thought the little drive gear only went one way. Come to find out it can go on different ways throwing the timing off.
I replaced it with a duralast unit cause my water pump leaked on my old one. Put everything back together and now it wont start it just backfires and makes noises like my crankshaft is hitting something idk how to describe it. I checked all sensors and fuses plug wires and everything is fine. Any ideas on why it work?
Al
Hey i also had the same thing.
I replaced my opti when i changed my water pump. I bought a MSD opti though and when i went to crank it, it would sound like the timing was 180 off. It would crank but sounded horrible, like the pistons were beating against the heads and it would die almost instantly.
Well after troubleshooting it forever...i sent it back to MSD and they sent me a new one..and it worked perfect.
Not all new parts are perfect!!!
I replaced my opti when i changed my water pump. I bought a MSD opti though and when i went to crank it, it would sound like the timing was 180 off. It would crank but sounded horrible, like the pistons were beating against the heads and it would die almost instantly.
Well after troubleshooting it forever...i sent it back to MSD and they sent me a new one..and it worked perfect.
Not all new parts are perfect!!!
mine has a spline drive and im fairly certain it will only go in, easily, one way. From what i remember if the spline wasnt lined up correctly the opti would still kind of go on, but it would not seat down and be snug.
Heres a pic thanks to SHbox.com, Not sure the consequences of this, But a easy way to know would be there was a gap between the opti mounting points and the opti.
Heres a pic thanks to SHbox.com, Not sure the consequences of this, But a easy way to know would be there was a gap between the opti mounting points and the opti.
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Staging Lane
Joined: Aug 2010
Posts: 60
Likes: 0
From: Miami, FL
The two plugs that go sort of hooked together that go into the icm, well they each have to prongs that go into the icm. One of the prongs on the black plug is missing. When the car was running I removed that plug and was like wtf what happened here. Could that be what's causing my situation????
TECH Veteran
Joined: Dec 2008
Posts: 4,147
Likes: 62
From: Little Rock, AR
The two plugs that go sort of hooked together that go into the icm, well they each have to prongs that go into the icm. One of the prongs on the black plug is missing. When the car was running I removed that plug and was like wtf what happened here. Could that be what's causing my situation????
The opti must also be indexed correctly. You can't just throw it on any old way.
http://shbox.com/1/opti_back.jpg
TECH Fanatic
Joined: Jan 2004
Posts: 1,157
Likes: 1
From: Kingfisher Oklahoma
I used to have a 93 T/A and the spline shaft for the opti WILL NOT ONLY GO IN ONE WAY. I did it a few times and it just fell together , I was sure it was right, I eventually swapped all the parts for a 95 opti on it, but I was bumfuzzled a couple of times with it.
TECH Fanatic
Joined: Jan 2004
Posts: 1,157
Likes: 1
From: Kingfisher Oklahoma