1991 Q45 FRESH WATER FLOOD PROBLEMS

[jkastellic]

Hi I just bought a 1991 q45 these are the problems i have, no power seats,the tilt does not work, no,headlights, stoplights, I have running lights, and a low idle when warm the a/c also does not work, I have a shop manual, and a patrs manual on order, where should i start i also have a great scanner, the water went up to the seat cushions, where should i start?? thanks Joe

[Q451990]

Wow... I have no idea. Probably time to just start taking one circuit at a time. Water at that level means the ECU and TCU were soaked....

Heath

[qship96]

dumb question,but why would you buy a car in this condition without a professional assesment of the parts and costs needed to fix?

[maxnix]

dumb question,but why would you buy a car in this condition without a professional assesment of the parts and costs needed to fix?

Maybe they paid him to take it.

Doubt anything less than a 100% ground up restoration wlll get it to work properly. Water in harness means replace it.
Modified by maxnix at 7:12 AM 4/16/2007

[DrewQ45]

You need Ecu and Tcu. I have both, very reasonable. Let me know.

[jkastellic]

What is a tcu? will a ECU from your car work?? I was going to replace all the modules and relays and go from there, does anyone have what I need?? BTW, the car is in good condition with only 70k it has a new 93 transmission with the 1st, gear start also new radiator, tires, ect,

[92Q45guy]

What is a tcu? will a ECU from your car work?? I was going to replace all the modules and relays and go from there, does anyone have what I need?? BTW, the car is in good condition with only 70k it has a new 93 transmission with the 1st, gear start also new radiator, tires, ect,

Transmission control unit. The TCU controls the first gear start, So you will need another one of those.

[maxnix]

Trnasmission underwater is not good.

[DrewQ45]

Transmission control unit. The TCU controls the first gear start, So you will need another one of those.

The TCU controls the shift... period. Some are first gear start (93+) and some are 2nd (90-92). If TCU or ECU was touched by water, as in any car, changing them is a given.

[Q45tech]

Air b ag ecu under center console rear splices and connectors under rear seat, differential probably has water damage, brakes, abd wheel sensors,

Nothing $10,000 worth of parts [harness, modules, components] won't fix.

[lino]

Welcome to the forum and may I say that you got big balls buying a flood-damaged Q or you have no clue what you're up against. I have spent close to $10,000 in under 2 years on what I thought was a wonderful condition, dealer maintained, FL car that looks mint and still spending. A 1991 Q will require maintenance. I would run for the nearest sanitarium within minutes that's if Ididn't have a heart attack on the way if I had to deal with a flood-damaged Q. I'm already stressed thinking about your car right now

Best of Luck!

[elwesso]

Honestly what I woudl do, if the engine runs and seems good, Id forget fixing the car and part it out. As it sits the car is hardly worth fixing, and you could probably make money selling parts, probably enough to buy a nice (and dry) 90-93 Q.

[elwesso]

You need Ecu and Tcu. I have both, very reasonable. Let me know.

If the engine runs the ECU is probably not bad. Did not mention if the trans shifts properly or not.

We certainly do not know enough about the problem currently to start throwing parts that may not make any difference.

[jkastellic]

The engine runs good, but when it gets hot Ihave a low idle, the trans. was flushed out , before the car was driven, also the diff. fluid was also replaced,before it was driven,also engine oil was changed, does the body control module control the tilt columun and the seats?? where can I find an owners manual cheap?? not a service manual, thanks Joe

[jkastellic]

I would like to find a parts car or a donner car I have wrenched on american cars and trucks with similar problems, but this my first Q 45, Do you have the parts I need??

[maxnix]

Owner's manuals for 1994 and later are free for download at

http://www.nissan-techinfo.com/infiniti/

FSM and TSB are avaialble for a 1 day subscription.

You need all 3.

[DrewQ45]

If the engine runs the ECU is probably not bad. Did not mention if the trans shifts properly or not.

We certainly do not know enough about the problem currently to start throwing parts that may not make any difference.

Not speculation here.... in flood damaged cars, the engine and transmission computers are always changed FIRST. It's a given and from the description, I'd say water infiltration took place into the units. If weird problems aren't showing now, oxidation within these parts will eventually cause gremlins or big trouble. At the very least, I'd take them apart and spray WD-40 or some other type of moisture fighting, rust inhibiting spray, but then again, you have to think about the components such as the Caps, inductors etcs - the damage is probably already done. Time will tell and the question will always be there.
Modified by DrewQ45 at 5:43 AM 4/17/2007

[Defiant]

Flood water is never "fresh".

[jkastellic]

I agree I am in the process of replaceing parts that hvae been DAMAGED BY WATER , I think if we can get a man to the Moon I can get a Q 45 to run again!!!!!!!!!!! THANKS Joe