Help With A Gentry Please

[Richie-Van-GTi 70 2 Cars]

Just been working on a friends gentry, its a phase 1.5 with later management (jetronic?)

 

Anyway we cannot get it to fuel correctly, renewed the pump as it was a tad lazy and now it seems to either draastically over fuel or seriously under fuel. But working on itr has raised a few questions. Hopefully someone can answer all of the following

 

1) should the AFM be adjsutable? This one is and the code is 0280202097 which isnt the same as my 1.9 code.

2) is the lambda supposed to be a 3 wire job or 4? its got a 4 wire lambda connected to a 3 wire plug setup at the ECU loom end.

3) will an earlier motronic ECU fit the loom so we could just ditch the lamda and switch to a 1.9 AFM from a motronic?

 

please help as much as possible so we can get this otherwise mint car running right.

[Gentrix 2 1 Cars]

Just been working on a friends gentry, its a phase 1.5 with later management (jetronic?)

 

Anyway we cannot get it to fuel correctly, renewed the pump as it was a tad lazy and now it seems to either draastically over fuel or seriously under fuel. But working on itr has raised a few questions. Hopefully someone can answer all of the following

 

1) should the AFM be adjsutable? This one is and the code is 0280202097 which isnt the same as my 1.9 code.

2) is the lambda supposed to be a 3 wire job or 4? its got a 4 wire lambda connected to a 3 wire plug setup at the ECU loom end.

3) will an earlier motronic ECU fit the loom so we could just ditch the lamda and switch to a 1.9 AFM from a motronic?

 

please help as much as possible so we can get this otherwise mint car running right.

 

The lamda should be a 3 wire Lamda, but a 4 wire will do the job aswell, cause the 4th is only for ground.

 

A Motronic ECU will not fit

 

The AFM has a CO adjusting screw (allan key) but it won´t cause your troubles, if it´s out of adjust.

 

check for airleaks, and if you have major overfuel, when check the watertemp. sensor on the head behind the distributor. It sits a bit further down and has a blue (full of black crap) 2 wire plug. Check the plug and check the 2 wires which go in the plug, that they did not clip out of the plug itself. You have to remove the rubberthingy on the plug to see...

[Richie-Van-GTi 70 2 Cars]

thanks for the info

found out its got the jetronic ecu with code 0280000345, can anyone confirm this to be the right 1.9 ecu and the code on the afm above is correct?

[Gentrix 2 1 Cars]

205 - Jetronic

ending with 359 = 128PS

ending with 345 = 102PS

ending with 333, 321, 340 = 1.6 105PS

 

205 - Motronic

ending with 162, 160 = 120PS

 

that´s for the ECU´s

 

and

 

motronic 120ps = ending with 202

jetronic 128ps = ending with 109

jetronic 102ps = ending with 097

jetronic 105ps = ending with 056

 

 

for the AFM´s

 

 

so everything seems fine for you

 

andi

Edited December 10, 2006 by Gentrix

[Richie-Van-GTi 70 2 Cars]

Sweet thanks for that, will get a new lambda ordered see if that cures it then

[Gentrix 2 1 Cars]

it should run nearly normal, but a bit high on the mpg, otherwise fine with the lamda disconnected. the only trouble with a shot lamda I had, was a warmstart kangorooing.

I bet it´s the watertempsensor..

[Richie-Van-GTi 70 2 Cars]

if it only over fueled I would suspect the ecu temp sensor as well but it goes from one extreme to the other whch suggest lambda to me.Ive got a spare temp sensor knocking about somewhere anyway so can always give it a try if lambda doesnt cure it.

[Henry Yorke 269 3 Cars]

I have spare AFM and ECU for one of these XU9J1/AZ (DFZ) engines if you get really stuck.