quadrider32

So I got a 90 22re extra cab

Truck has sat since august...started fine the other day but now wont stay running. Itll turn right over and start up but cut out after 3 seconds, after that it wont fire again until you wait 5- 10 minutes but yet again it will only stay running for maybe 3 seconds.

Anyone know what the problem could be...I appreciate any help

Bassmastry101

iTrader: (1)

Have you checked your AFM? There is a link in my signature for the factory service manual that will help out when testing.

Sensei

Check fuel pressure. Check for plugged fuel filter. Check AFM as stated above. Not necessarily in any order but do all three.

quadrider32

but how do I check for fuel pressure?...pretty sure I can locate and replace a fuel filter and that AFM link will help too.

Gonna try these tomorrow thanks for the help!

Bassmastry101

iTrader: (1)

Crack open the bolt on the cold start injector. You'll know if you got pressure.

scope103

Before you start wrenching, jump FP to B+ on the diagnostic connector. If the truck starts AND RUNS with the jumper, then you have a problem in the VAFM, COR circuit. (And not in the fuel pump or fuel filter).